a white dwarf will become a type ia supernova if group of answer choices the original star was more than 1.38 msun./
Answers
When a white dwarf star is totally annihilated by a nuclear explosion, type Ia supernovae are produced. Type Iax supernovae, a new subtype of supernova, have just been discovered.
Why do Type 1a supernovae occur?It is believed that Type Ia supernovae (SNIa) are produced when a carbon-oxygen white dwarf in a binary system reaches the Chandrasehkar limit, either as a result of accretion from a donor or mergers.
Supernovae of type 1a, in which one of the stars is a white dwarf and there are two stars circling one another, are a kind of supernova that may occur in binary systems. The other star might range in size from a massive star to a tiny white dwarf.
The other star may be anything, even a huge one.
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Related Questions
Three charges lie along the x-axis. One positive charge, q1 = 4.80*10^-18 C, is at x = 3.72 m, and another positive charge, q2 = 1.60*10^-19 C, is at the origin.
At what point on the x-axis must a negative charge, q3, be placed so that the resultant force on it is zero?
Answers
Answer:
The third charge needs to be placed at \(x \approx 0.57\; \rm m\).
Explanation:
Both \(q_1\) and \(q_2\) would attract \(q_3\).
These two electrostatic attractions need to balance one another. Hence, they need to be opposite to one another. Therefore, \(q_1\) and \(q_2\) need to be on opposite sides of \(q_3\). That is possible only if \(q_3 \!\) is on the line segment between \(q_1 \!\) and \(q_2 \!\).
Assume that \(q_3\) is at \(x\; \rm m\), where \(0 < x < 3.72\) (in other words, \(q_3 \!\) is on the line segment between \(q_1\) and \(q_2\), and is \(x\; \rm m \!\) away from \(q_2 \!\).)
Let \(k\) denote Coulomb's constant.
The magnitude of the electrostatic attraction between \(q_1\) and \(q_3\) would be:
\(\displaystyle \frac{k\cdot q_1 \cdot q_3}{(3.72 - x)^{2}}\).
Similarly, the magnitude of the electrostatic attraction between \(q_2\) and \(q_3\) would be:
\(\displaystyle \frac{k\cdot q_2 \cdot q_3}{x^{2}}\).
The magnitudes of these two electrostatic attractions need to be equal to one another for the resultant electrostatic force on \(q_3\) to be \(0\). Equate these two expressions and solve for \(x\):
\(\displaystyle \frac{k\cdot q_1 \cdot q_3}{(3.72 - x)^{2}} = \frac{k\cdot q_2 \cdot q_3}{x^{2}}\).
\(\displaystyle \frac{q_1}{(3.72 - x)^{2}} = \frac{q_2}{x^{2}}\).
\(\displaystyle \frac{x^2}{(3.72 - x)^{2}} = \frac{q_2}{q_1}\).
\(\displaystyle \frac{x^2}{(3.72 - x)^{2}} = \frac{q_2}{q_1} = \frac{1}{30}\).
By the assumption that \((0 < x < 3.72)\), it should be true that \((x > 0)\) and \((3.72 - x > 0)\). Therefore, \(\displaystyle \frac{x}{(3.72 - x)} > 0\).
Take the square root of both sides of the equation \(\displaystyle \frac{x^2}{(3.72 - x)^{2}} = \frac{1}{30}\).
\(\displaystyle \sqrt{\frac{x^2}{(3.72 - x)^{2}}} = \sqrt{\frac{1}{30}}\).
\(\displaystyle \frac{x}{3.72 - x} = \frac{1}{\sqrt{30}}\).
\(\sqrt{30}\, x = 3.72 - x\).
Therefore:
\(\left(1 + \sqrt{30}\right)\, x = 3.72\).
\(\displaystyle x = \frac{3.72}{1 + \sqrt{30}} \approx 0.57\).
Hence, \(q_3\) should be placed at \(x \approx 0.57\; \rm m\).
The measurement of ________ compares the density of urine to the density of water.
Answers
The measurement of specific gravity compares the density of urine to the density of water.
Specific gravity, also known as relative density, is the ratio of a substance's density to that of a standard substance.
Urine specific gravity (USG) is a measurement of the particle concentration in urine as well as the density of urine in comparison to the density of water. Measuring USG is a quick and easy way to determine a patient's hydration status as well as kidney function. The more concentrated the urine, the higher the urine specific gravity.
Your healthcare provider will consider the density of your urine in relation to the density of water. In other words, the specific density of water is 1.000. If your kidneys are working properly, your urine specific gravity should be between 1.002 and 1.030.
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Convert 0.4 cm to km.
Answers
If the vehiche has a speed of 24.0 m/s at point a what is the force of the track on the vehicle at this point?
Answers
Question:
A roller-coaster vehicle has a mass of 500 kg when fully loaded with passengers. If the vehicle has a speed of 20.0 m/s at point A, what is the force exerted by the track on the vehicle at this point?
See attachment
Answer:
33700 Newton
Explanation:
Given
\(m = 500kg\\v = 24.0m/s\\r=10m\)
First, we determine the forces acting on mass m.
They are: the force exerted by the track (Fn) and the weight of the vehicle (W)
So, the net force is:
\(F_{net} = F_n - W\)
\(W=mg\)
So:
\(F_{net} = F_n - mg\)
Make Fn the subject
\(F_n = F_{net} + mg\)
Fnet is calculated as:
\(F_{net} = F_c = \frac{mv^2}{r}\) --- i.e. the centripetal force
So:
\(F_n = F_{net} + mg\)
\(F_n = \frac{mv^2}{r} + mg\)
\(F_n = \frac{500 * 24^2}{10} + 500 * 9.8\)
\(F_n = 28800 + 4900\)
\(F_n = 33700N\)
Describe What would happen to the temperature of boiling water if you added energy?
Answers
When thermal energy is added to a substance, its temperature increases, which can change its state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation).
If the liquid is a mixture, as the more volatile components boil off, the boiling point rises, so adding energy causes the temperature to go up. If you add enough energy, all the liquid evaporates, so there is no liquid temperature
another student also expected 2.63 g of product, but isolated only 2.45 g. what is the percentage yield? show your work.
Answers
The percentage yield is a measure of how efficiently a chemical reaction produces the expected product. In this case, the expected product was 2.63 g, but only 2.45 g was isolated. To calculate the percentage yield, you need to divide the actual yield (2.45 g) by the theoretical yield (2.63 g), and then multiply by 100 to convert to a percentage.
The equation for percentage yield is:
% Yield = (actual yield / theoretical yield) x 100
In this case, the calculation would be:
% Yield = (2.45 g / 2.63 g) x 100 = 93.14%
Therefore, the percentage yield is 93.14%. This means that only 93.14% of the expected product was obtained in the reaction. The remaining 6.86% was lost due to various factors such as incomplete reaction, loss during transfer or filtration, or errors in measurement.
In conclusion, calculating the percentage yield is an important step in assessing the efficiency of a chemical reaction. It helps to identify the factors that affect the yield and optimize the conditions to maximize the product output.
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What is the mathematical relationship between wavelength and velocity?
Answers
Answer:A wave has a wavelength λ, which is the distance between adjacent identical parts of the wave. The wave velocity and the wavelength are related to the wave's frequency and period by vw=λT or vw=fλ.
Explanation:
hotter bodies emit _______ radiation than cooler bodies. please fill in the blank with the best answer. group of answer choices
a. bigger
b. shorter
c. similar longer
Answers
Hotter bodies emit shorter radiation than cooler bodies. The correct option is b.
1. The term "radiation" refers to the electromagnetic waves emitted by objects due to their temperature. These waves can have different wavelengths, which determine their characteristics such as color and energy.
2. Hotter bodies have higher temperatures, and temperature is a measure of the average kinetic energy of the particles within an object. As the temperature increases, the particles gain more energy and move more vigorously.
3. The energy distribution of particles in a hotter body is skewed towards higher energy levels. This means that the particles have a greater tendency to emit photons with higher energies, corresponding to shorter wavelengths.
4. According to Planck's law of black-body radiation and the Stefan-Boltzmann law, the intensity and spectral distribution of radiation emitted by an object are directly related to its temperature. Hotter objects emit more radiation overall and the peak of their radiation occurs at shorter wavelengths.
5. On the other hand, cooler bodies have lower temperatures, and the energy distribution of their particles is skewed towards lower energy levels. Consequently, cooler bodies emit photons with lower energies, corresponding to longer wavelengths.
6. Therefore, the correct answer is that hotter bodies emit shorter radiation than cooler bodies. This relationship is consistent with our everyday experience, as we observe hot objects like glowing metal or the Sun emitting radiation at shorter wavelengths in the visible or even ultraviolet range, while cooler objects like embers or the Earth emit radiation at longer wavelengths, such as infrared. Option B is the correct answer.
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would defining the charge on an electron to be positive have any effect on coulomb’s law?
Answers
Yes, defining the charge on an electron to be positive have any effect on coulomb’s law.
If we change the sign of the charge, the magnitude of electric force will not be effected but the direction of the electric force will be changed.
The magnitude of force between the charged particles is directly related to the amount of charge carried by each particle not its sign. This means that the force will not be changed if we alter the sign of the charge.
The direction of electric force between the charge depends on the sign of charge. If the charges carry same sign, the force is repulsive and if the charges carry opposite signs the force would be attractive.
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Researchers are completely certain that which of the following facial expressions is recognised by people of all cultures?
A. Interest
B. Guilt
C. Contempt
D. Surprise
Answers
Surprise is the facial expressions is recognized by people of all cultures.
What is meant by facial expression?A facial expression is made up of one or more movements or facial muscle postures. One disputed theory claims that these motions reveal an individual's emotional condition to onlookers. Nonverbal communication can also take the shape of facial expressions.In addition to humans, most other mammals and several other animal species also use them as a key method of social communication.Humans may express themselves on their faces willingly or involuntarily, and the neurological systems that regulate the expression vary depending on the situation. Voluntary facial expressions frequently have a cortical pathway in the brain and are socially conditioned. On the other hand, it is thought that involuntary facial expressions are intrinsic and go through the subcortical region of the brain.Learn more about facial expression refer to :
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Three resistors 10 ohms, 20 ohms, and 30 ohms are connected in series with a 90-volt battery. Determine the current through each resistor. Which of the three resistors is the most powerful?
Answers
Since the resistors are in series, the equivalent resistance is the sum of the resistances:
\(\begin{gathered} R=10+20+30 \\ R=60\text{ ohms} \end{gathered}\)Now, to find the current, let's divide the voltage by the total resistance:
\(\begin{gathered} I=\frac{V}{R} \\ I=\frac{90}{60} \\ I=1.5\text{ A} \end{gathered}\)The current through each resistor is the same because they are in series: 1.5 A.
To find the most powerful resistor, let's analyze the formula for the power in a resistor:
\(P=I^2\cdot R\)We can see that the greater the resistance, the greater the power, therefore the most powerful resistor is the 30 ohms resistor.
How many moles are in 6.02 x10^24 atoms of carbon
Answers
Answer: 10
Explanation:
What is the unit of work? (select all that apply) *
force
Kg*m/s^2
kg*m^2/s^2
joule
A lastname
none of the above
Answers
Answer:
Joule is the answer
Please give me brainleast
Joule is the unit of work .
What is meant by work ?
Activity that a person habitually engages in to earn a living is activity that persons looking for job engage in.
Activity in which one utilises strength or faculties to do or do anything. a particular duty, responsibility, function, or assignment that often forms a component or stage of a bigger action.
Thus, Joule is the SI unit of work (J). The work accomplished by a force of one newton creating a displacement of one metre is known as a joule.
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The brakes on a car do 110,095J of work as they apply an average force of 8,450N. How far in meters does the car continue before stopping
Answers
13.02 meters
Explanation
the work done by the brakes makes the car stops, so the change in energy equals the work done
hence
\(\text{work}=\Delta Ek=\frac{1}{2}mv^2\)also, the work done by a force is given by
\(\text{work}=\text{ force}\cdot dis\tan ce\)then, let
\(\begin{gathered} \text{work}=\text{ 110095 J} \\ \text{Force}=8450\text{ N} \end{gathered}\)replace
\(\begin{gathered} \text{work}=\text{ force}\cdot dis\tan ce \\ 110095\text{ J=8450 N}\cdot distnace \\ \text{divide both sides by 8450 N} \\ \frac{110095\text{ J}}{\text{8450 N}}\text{=}\frac{\text{8450 N}\cdot}{\text{8450 N}}distance \\ 13.02m=\text{distance} \end{gathered}\)therefore, the answer is
13.02 meters
I hope this helps you
A 230 v mains powered electrical drill draws a current of 2.5 A calculate the power of the drill at use
Answers
a car and a truck start from rest at the same instant, with the car initially at some distance behind the truck. the truck has a constant acceleration of 2.10 m/s2 and the car an acceleration of 3.40 m/s2. the automobile overtakes the truck after the truck has moved 60.0 m. a) t=7.56s b) how far was the car behind the truck initially? c) what is the speed of the truck when they are abreast? d) what is the speed of the car when they are abreast?
Answers
Each moves past the other at a pace of 15.876 meters per second.
A constant acceleration is defined.How rapidly a particle's velocity varies in proportion to time is referred to as its "acceleration." When a subatomic particle velocity varies at a set rate, the change is referred to as constant acceleration.
A = v v 0 t does exist. This means that, for a certain period of time, is if difference between the and end velocity is small, the velocity is negligible and goes to zero in the limit when they are equal. Consider a particle moving uniformly around a circle; it accelerates since the motion's vector is changing, but it keeps its speed constant along perpendicular throughout the motion.
In this question, we'll be making use of
x - x₁ = v₁t + ½at²
The above equation is a modification of
x = vt + ½at²
Where x = distance
v = velocity of the body
a = acceleration of the body
t = time
x - x₁ = v₁t + ½at²
Assuming the starting point of the bodies x₁ = 0 which is at rest, the car sped past the truck at 60m.
x - x₁ = v₁t + ½at²
x₁ = 0
v₁ = 0
x = 60
a = 2.10
t = ?
60 - 0 = 0 × t = ½ × 2.10t²
Solve for t
60 = 1.05t²
t² = 60 / 1.05
t² = 57.14
t = √(57.14)
t = 7.56s
The time it took the car to over take the truck is 7.56s
b).From our previous equation,
x - x₁ = v₁t + ½at²
Same variable except
a = 3.40m/s² and t = 7.56s
60 - x₁ = 0 + ½ × 3.40 × 7.56²
60 - x₁ = 97.16
x₁ = 60 - 97.16
x₁ = -37.16m
The car was behind the truck by 37.16m or the truck was ahead of the car by 37.16m.
c).The initial speed of the car ?
v = u + at
u = 0m/s
a = 3.40m/s²
v = 0 + 3.40 × 7.56
v = 25.704m/s
The initial speed of the truck = ?
v = u + at
u = 0m/s
a = 2.10m/s
v = 0 + 2.10 × 7.56
v = 15.876m/s
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An eyeglass lens is cut with one surface having a radius R1 and the other surface having a radius R2, with R1 < R2. Both positive radii are measured from the same side with R1 being the side closer to the eye. Is this convex-concave lens a converging lens or a diverging lens?
a. This is a converging lens.
b. This is a diverging lens.
c. This can be either a converging or diverging lens, as more information is needed for a final determination.
d. This is neither since a lens cannot be made this way.
Answers
Answer:
c
Explanation:
c. This can be either a converging or diverging lens, as more information is needed for a final determination.
A motorbike starts from rest and speeds up uniformly to the right until it reaches a maximum velocity of 60 m/s in 15 s. what is the acceleration of the motor bike?
Answers
The acceleration of the motor bike is 4 m/s².
To find the acceleration, the given values are,
Final velocity = 60 m/s
Initial velocity = 0 m/s
Time period = 15 seconds.
What is Acceleration?Acceleration is a rate of change of velocity with respect to time with respect to direction and speed.A point or an object moving in a straight line is accelerated if it speeds up or slows down.Acceleration formula can be written as,a = (vf - vi) / t m/s²
Acceleration = (change in speed) / (time for the change)
a = acceleration
vf = final velocity
vi= starting velocity
t = time
Acceleration is a vector quantity.The unit of acceleration is m/s².So the formula,
a = Δv / t m/s²
= (60 m/s) / (15)
= 4 m/s².
The acceleration of the motor bike is 4 m/s².
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A fathometer is used to send a wave down to the sea bed, the reflected wave is released after 0.5 seconds. Calculate the depth of the sea
Answers
To calculate the depth of the sea using the given information, we need to consider the speed of the wave and the time it takes for the wave to travel down to the sea bed and back.
The time taken for the wave to travel down to the sea bed and back is twice the time it takes for the reflected wave to be received. In this case, the reflected wave is received after 0.5 seconds, so the total round trip time is 2 * 0.5 seconds = 1 second.
Now, we need to determine the speed of the wave. The speed of a wave can be calculated using the formula:
\(Speed = \frac{Distance}{Time}\)
In this case, the distance is twice the depth of the sea because the wave travels down to the sea bed and then back up to the surface. Therefore, we have:
\(Speed = \frac{2 \times Depth}{Time}\)
Rearranging the formula to solve for the depth, we get:
\(Depth = \frac{Speed \times Time}{2}\)
Since we are not given the speed of the wave, we cannot calculate the exact depth. The speed of the wave will depend on the properties of the medium through which it is traveling (such as water) and may need to be provided in the question.
Once the speed is known, we can substitute it into the formula along with the given time of 1 second to calculate the depth of the sea. Without the speed value, we cannot determine the exact depth.
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A resistor and an inductor are connected in parallel. If the voltage across the resistor is 120 volts, the voltage across the inductor is 120 volts.
True
Answers
True, A resistor and an inductor are connected in parallel. If the voltage across the resistor is 120 volts, the voltage across the inductor is 120 volts.
A resistor is a passive two-terminal electrical issue that implements electrical resistance as a circuit element. In digital circuits, resistors are used to reduce contemporary drift, regulate signal ranges, divide voltages, bias energetic elements, and terminate transmission strains, amongst different makes use of.
Resistors are used for many functions. A few examples include proscribing electric-powered modern, voltage division, warmness technology, matching, and loading circuits, gain control, and placing time constants.
A resistor is a two-terminal electrical issue that provides electric resistance. In digital circuits, resistors are predominantly used to lower the waft of modern, divide voltages, block transmission alerts, and bias active factors.
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How to express the perimeter of a rectangle as a function of its length of one of its sides?
Answers
Answer:
Let P = 2 * L + 2 * W where L is the length of one side
If the width W is fixed and C = 2 * W a constant
P = 2 L + C
Before the internet was available people often search for jobs?
Answers
Answer:
do you mean how? if so
Explanation:people used newspapersand still kinda do back then they had posters up as they still do and newspapers
as you heat a piece of wood on a fire, the temperature of the wood increases. what does this tell you?
a. the molecules in the wood are vibrating faster
b. the total thermal energy of the wood is decreasing
c. the chemical energy of the wood is increasing
d. the molecules in the wood are vibrating more slowly
Answers
Answer:
A.
Explanation:
I remember this one from my science class.
The molecules in the wood are vibrating faster .
What is Heating?During heating, the temperature of any object or substance increases. This cause the particles to move faster as they gain kinetic energy which leads to an increase in the collision rate as well as diffusion.
Heat is the result of the movement of kinetic energy within a material or an item, or from an energy source to a material or an object. Radiation, conduction, and convection are the three mechanisms through which such energy can be transferred.
The International System of Units (SI) defines the calorie (cal) as the standard unit of heat. The cal measures the amount of energy transfer needed to raise the temperature of one gram of pure liquid water by one degree Celsius, provided that the water is above the freezing point and below the boiling point.
Therefore, The molecules in the wood are vibrating faster .
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Assume a simply supported beam with span of 15m. It will be exposed to a dead load of 20kN/m (including self-weight) and a live load of 2kN/m along the full span. At the same time, it will be experiencing a concentrated dead load of 23kN + a live load of 1kN at midspan, as well as an additional dead load of 15kN located at 4m from the right support.
The beam has a rectangular cross-section with a width of 600mm and total height of 1000mm. The beam is reinforced with 10- 25M tensions bars at effective depth of 920 mm. The maximum aggregate size used is 20mm, and has the following material properties: f’c = 25MPa ,fy = 400 MPa.
Please perform the following task:
1) Draw the governing shear and bending moment diagram for the factored load.
2) Calculate the moment resistance of the cross section.
3) Comment if this cross section is adequately designed to resist the factored bending moment. (LRFD)
Answers
The values of all sub-parts have been obtained.
(1). The maximum factored load the beam can withstand is 45.2 kN/m.
(2). The moment resistance of the cross-section is 291735.65 Nm.
(3). The factored moment demand is 27939.6 Nm
1) To draw the governing shear and bending moment diagram for the factored load, we need to first calculate the maximum factored load that the beam can withstand.
The maximum factored load on the beam is given by:
Dead Load = 20 kN/m + 15 kN
= 35 kN/m.
Live Load = 2 kN/m + 1 kN
= 3 kN/m.
Total Factored Load = 1.2 x Dead Load + 1.6 x Live Load
= 1.2 x 35 kN/m + 1.6 x 3 kN/m
= 45.2 kN/m.
The maximum factored load the beam can withstand is 45.2 kN/m.
The shear force and bending moment diagrams for the given factored load can be obtained as shown below:
Shear Force Diagram:
Bending Moment Diagram:
2) To calculate the moment resistance of the cross-section, we can use the formula:
MR = σst A'(d - a/2) + 0.85f'c A''(d - a/2)
Where, σst = yield stress of tension steel [σst = fy / γst],
γst = safety factor for tension steel [γst = 1.15A']
A' = area of tension steel, [A'' = b(d - a)].
Where,
b = width of the beam [b = 600 mm],
d = total height of the beam [d= 1000 mm],
a = effective depth of tension steel [a = 920 mm]
f'c = compressive strength of concrete [f'c = 25 MPa],
MR = σst A'(d - a/2) + 0.85f'c A''(d - a/2)
MR = (400 / 1.15) x 10 x (1000 - 920/2) + 0.85 x 25 x 590 x (1000 - 920/2)
MR = 291735.65 Nm
The moment resistance of the cross-section is 291735.65 Nm.
3) To check if this cross-section is adequately designed to resist the factored bending moment (LRFD), we need to calculate the factored moment demand and compare it with the moment resistance.
The factored moment demand is given by:
MF = ϕ x Mu
Where,ϕ = resistance factor = 0.9, Mu = factored bending moment
Mu = 1.2 x Dead Load x L2 / 8 + 1.6 x Live Load x L2 / 8 + 1.2 x (Dead Load + Live Load) x L2 / 2
= 1.2 x 35 x 152 / 8 + 1.6 x 3 x 152 / 8 + 1.2 x 38 x 152 / 2
= 31044 Nm
MF = ϕ x Mu
= 0.9 x 31044
= 27939.6 Nm
The factored moment demand is 27939.6 Nm, which is less than the moment resistance of the cross-section, i.e., 291735.65 Nm.
Therefore, this cross-section is adequately designed to resist the factored bending moment.
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What i the denity of a cube that ha a ma of 12. 6 and a meaured ide length of 4. 1 cm?
Answers
The density of a cube that has a mass of 12. 6 and a measured length of 4.1 cm is 0.18 kg/cm³
Density=mass/volume
mass=12.6
volume=68.9
density=12.6/68.9
density=0.18 kg/cm³
Density is defined as a material substance's mass per unit volume. Density is described by the equation d = M/V, where d stands for density, M for mass, and V for volume. Grams per cubic centimeter is the unit of measurement for density. For instance, compared to Earth's density of 5.51 grams, water has a density of 1 grams per cubic centimeter . Another way to express density is in kilograms per cubic meter (in meter-kilogram-second or SI units), It is easy to determine the relationship between mass and volume using density. For instance, the formula for determining a body's mass is M = Vd, while the formula for determining a body's volume is V = M/d.
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yfdtygertdgvetyg35ergfb ehtgb 3rwtgc3rtd 3trv hetrdghbrygf
Answers
irina is told to use a meter stick to find the length of a room. she makes six independent measurements: 4.402 m, 4.217 m, 4.345 m, 4.925 m, 4.372 m, 4.289 m. how should she report the best estimate of the length of the room? 01
Answers
Irina should report the best estimate of the length of the room as 4.425 meters.
Irina should report the best estimate of the length of the room by calculating the average of all the measurements.
The average of the six independent measurements can be found using the formula:
Average = (Sum of measurements) / (Total number of measurements)
Therefore, the average of the six independent measurements can be calculated as follows:
Average =
(4.402 m + 4.217 m + 4.345 m + 4.925 m + 4.372 m + 4.289 m) / 6
= 26.55 / 6= 4.425 m
This is the best estimate of the length of the room because it is the average of all the independent measurements made by Irina.
In science, measurements play a vital role. Scientists use a range of tools to measure things, from simple ruler or meter stick to highly sophisticated equipment. It is crucial for the measurements to be as precise and accurate as possible because any error in the measurement can affect the results of experiments.
To minimize the error in measurement, scientists often make multiple measurements and then report the average of those measurements as the best estimate of the measurement.
This process is known as taking the average, or mean, of the measurements. In the example given above, Irina made six independent measurements of the length of the room using a meter stick. She then calculated the average of those measurements and reported it as the best estimate of the length of the room.
This method is widely used in science to minimize the error in measurement and to ensure that the results of experiments are as accurate as possible.
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As we look at larger and larger scales in the universe, we findA) an equal amount of visible and dark matter.B) smaller and smaller masses.C) a larger and larger percentage of the matter is dark.D) a larger and larger percentage of the matter is visible.E) almost exclusively visible matter.
Answers
As we look at larger and larger scales in the universe, we find C) a larger and larger percentage of the matter is dark. This is because dark matter makes up approximately 85% of the total matter in the universe, while visible matter only accounts for about 15%.
This is because dark matter does not interact with light, making it difficult to detect using traditional methods. However, its gravitational effects on visible matter can be observed, and through these observations, scientists have determined that dark matter makes up a significant portion of the total matter in the universe. In fact, it is believed that dark matter makes up about 85% of all matter in the universe, with visible matter making up the remaining 15%. Therefore, as we look at larger and larger scales in the universe, the percentage of dark matter becomes increasingly dominant.
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Which statement explains what happens to older crust during seafloor spreading?
It is destroyed at coastlines.
It moves under continents.
It is destroyed at a mid-ocean ridge.
It moves away from a mid-ocean ridge.
Answers
Answer:
the last one, It moves away from a mid-ocean ridge.
Answer:
D
Explanation:
BabaBooey
What NEC article includes a section that covers using a cord and plug as a disconnecting means for a clothes dryer?
Answers
It is acceptable for an accessible plug & receptacle or a separable connector to act also as disconnecting means for appliances linked by a cord and plug.
What qualifies as a container?Electrical receptacles are defined as specific sorts of sockets of outlets that offer a position in a system where a wire can be connected to supply electrical current. The electrical outlet that is most frequently found in houses, companies, or other sorts of structures is the most typical type.
In electrical terms, what is a receptacle?receptacle that offers a location in a wire system whereby current can really be taken for run electrical appliances. Alternative words for outlets include wall plugs, wall sockets, and electrical outlets. types: powerpoint and point.
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