The precision of a balance is ±0.02 g. The accepted value for a measurement is 26.86 g. Which measurement is in the accepted range?

26.02 g
26.82 g
26.87 g
26.90 g

It would take you approximately 442.50 days to travel to a planet that is 16.4 AU away at a speed of 231,000 km/h.

To calculate the time it takes to travel to a planet 16.4 astronomical units (AU) away at a speed of 231,000 km/h, follow these steps:
1. Convert the distance from astronomical units to kilometers:
1 AU is equal to approximately 149,597,870.7 km. So, 16.4 AU would be:
16.4 AU * 149,597,870.7 km/AU ≈ 2,453,405,078 km.
2. Calculate the time taken to travel this distance at a speed of 231,000 km/h:
Time = Distance / Speed
Time = 2,453,405,078 km / 231,000 km/h ≈ 10,619.93 hours.
3. Convert the time from hours to days:
There are 24 hours in a day.

So, to convert the time to days, divide the number of hours by 24:
10,619.93 hours / 24 hours/day ≈ 442.50 days.

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The age for which a given level of performance is average or typical is known as the developmental age. It is the age at which a child is expected to reach certain milestones or exhibit certain skills based on their chronological age. Developmental age is important for assessing a child's progress and determining if they are meeting their age-appropriate goals.

It is also used in educational settings to tailor instruction to a child's abilities and needs. Developmental age can vary among children due to factors such as genetics, environment, and individual differences in learning and development. Understanding a child's developmental age can help parents and professionals support them in reaching their full potential.

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Answer:

b

Explanation:

Answer:

exothermic reaction

Explanation:

Exothermic reactions are reactions or processes that release energy, usually in the form of heat or light. In an exothermic reaction, energy is released because the total energy of the products is less than the total energy of the reactants.

Answer:

Flexion,Extension,Abduction,Rotation

Explanation:

The child's radial/centripetal acceleration at the lowest point of the swing is

a = (3.00 m/s)² / (7.00 m) = 1.29 m/s²

By Newton's second law, the tension in the rope is

T = (3.5 kg) (1.29 m/s²) = 4.5 N

(Does the question really say the child's mass is 3.5 kg? That's little more than the average mass of a newborn, about 3.3 kg. Not exactly a good idea to put a newborn on a swinging rope...)

If the student replaced the water in the calorimetry device with an ice bath at 0°C, the experimental results would differ in several ways:

Temperature Change: Instead of measuring the change in temperature of the water, the student would measure the change in temperature of the ice bath. As heat is transferred from the surroundings to the ice bath, the ice will melt and the temperature of the ice bath will increase until it reaches 0°C. The temperature change observed in the experiment would be different from that of the water bath.
Heat Capacity: The heat capacity of the ice bath would be different from that of the water bath. Ice has a lower heat capacity than water, meaning it requires less heat energy to raise its temperature. This would affect the amount of heat absorbed or released during the reaction and lead to different experimental results.
Enthalpy Change: The enthalpy change calculated from the experiment would be specific to the reaction being studied. However, the enthalpy change determined using an ice bath would be based on the heat exchange with the ice bath, rather than the water bath. The enthalpy change values would differ due to the different heat capacities and temperature changes involved.
Overall, using an ice bath instead of a water bath would result in different temperature changes, heat capacities, and enthalpy change values in the experimental results.

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Answer:

Protons

Neutrons

Electrons.

Protons + charge(positively charged)

Neurons no charge.

Electrons - ( negatively charged).

Explanation:

Atom is the smallest unit of a matter that constitutes chemical elements.

It is composed of three particles which are protons,neutrons and electrons.

Protons is positively charged,neuron has no charge and electrons is negatively charged.

Proton and neuron are found in the nucleus while electron is found outside the neuron.

Answer:

.45 J

Explanation:

The work is also equal to the EPE of the spring and is given by

 1/2 k x^2

= 1/2 ( 10 n/m) (.8-.5)^2 = .45 J

Answer:

add 44m/s and 22m/s then multiply it by 11

Explanation:

A race car traveling at 44m/s slows at a constant rate to a velocity of 22m/s over 11 seconds, Acceleration is -2 m/s² (deceleration), and distance is 242 meters.

To solve this problem, it is given:

Initial velocity (\(\(v_i\)\) ) = 44 m/s

Final velocity (\(\(v_f\) ) = 22 m/s

Time (\(\(t\)\) ) = 11 s

We have two tasks: finding the acceleration (a) and then using it to calculate the distance (d).

1. Calculate Acceleration (a):

\(\[a = \frac{v_f - v_i}{t} \\\\= \frac{22 \, \text{m/s} - 44 \, \text{m/s}}{11 \, \text{s}} \\\\= -2 \, \text{m/s}^2\]\)

The negative sign indicates deceleration (slowing down).

2. Calculate Distance (d):

Using the kinematic equation:

\(\[d = v_i \cdot t + \frac{1}{2} \cdot a \cdot t^2\]\)

Plugging in the values:

\(\[d = (44 \, \text{m/s}) \cdot (11 \, \text{s}) + \frac{1}{2} \cdot (-2 \, \text{m/s}^2) \cdot (11 \, \text{s})^2\]\)

Calculating the first part:

\(\[d = 484 \, \text{m} - 121 \, \text{m} \\\\= 363 \, \text{m}\]\)

Calculating the second part:

\(\[d = 363 \, \text{m} + \frac{1}{2} \cdot (-2 \, \text{m/s}^2) \cdot (121 \, \text{s}^2) \\\\= 363 \, \text{m} - 121 \, \text{m} \\\\= 242 \, \text{m}\]\)

The total distance the race car moves during this time is 242 meters.

Thus, acceleration is -2 m/s² (deceleration), and distance is 242 meters.

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Answer:

mass 3.67 kg, density 600 kg/m3) is fitted

with lead (density 1.14 * 10^4 kg/m3) so that it floats in water with

0.900 of its volume submerged. Find the lead mass if the lead is fitted

to the block’s (a) top and (b) bottom.

The new volume of the gas will increase to twice the original volume (Option D)

From the question given above, the following data were obtained:

The new volume of the gas can be obtained as illustrated below:

P₁V₁ / T₁ = P₂V₂ / T₂

Since the temperature is constant, we have:

P₁V₁ = P₂V₂

P × V = 0.5P × V₂

Divide both side by 0.5P

V₂ = (P × V) / 0.5P

V₂ = V / 0.5

V₂ = 2V

Thus, the new volume of the gas will increase to twice the original volume (Option D)

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The amplitude of a system undergoing simple harmonic motion is doubled, the total energy of the system will be four times as large.

In simple harmonic motion, the total energy of the system is the sum of the kinetic energy and potential energy. The equation for the total energy (E) in terms of the amplitude (A) is:

E = (1/2) k A^2

where k is the spring constant.

When the amplitude is doubled, the new amplitude becomes 2A. Plugging this into the equation, we have:

E' = (1/2) k (2A)^2

Simplifying:

E' = (1/2) k 4A^2

E' = 2kA^2

Comparing this to the original total energy (E), we can see that the new total energy (E') is four times larger than the original total energy (E). Therefore, the correct answer is that the total energy will be four times as large.

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Let m₁ and v₁ denote the mass and initial velocity of the first ball, and m₂ and v₂ the same quantities for the second ball. Momentum is conserved throughout the collision, so

m₁ v₁ + m₂ v₂ = m₁ v₁' + m₂ v₂'

where v₁' and v₂' are the balls' respective velocities after the collision.

Kinetic energy is also conserved, so

1/2 m₁ v₁² + 1/2 m₂ v₂² = 1/2 m₁ (v₁')² + 1/2 m₂ (v₂')²

or

m₁ v₁² + m₂ v₂² = m₁ (v₁')² + m₂ (v₂')²

From the momentum equation, we have

(0.600 kg) (9.00 m/s) + (0.300 kg) (-8.00 m/s) = (0.600 kg) v₁' + (0.300 kg) v₂'

which simplifies to

10.0 m/s = 2 v₁' + v₂'

so that

v₂' = 10.0 m/s - 2 v₁'

From the energy equation, we have

(0.600 kg) (9.00 m/s)² + (0.300 kg) (-8.00 m/s)² = (0.600 kg) (v₁')² + (0.300 kg) (v₂')²

which simplifies to

67.8 J = (0.600 kg) (v₁')² + (0.300 kg) (v₂')²

or

226 m²/s² = 2 (v₁')² + (v₂')²

Substituting v₂' yields

226 m²/s² = 2 (v₁')² + (10.0 m/s - 2 v₁')²

which simplifies to

3 (v₁')² - (20.0 m/s) v₁' - 63.0 m²/s² = 0

Solving for v₁' using the quadratic formula gives two solutions,

v₁' ≈ -2.33 m/s   or   v₁' = 9.00 m/s

but the second solution corresponds to the initial conditions, so we omit that one.

Then the second ball has velocity

v₂' = 10.0 m/s - 2 (-2.33 m/s)

v₂' ≈ 14.7 m/s

Answer:

a black hole

Explanation:

yi remeber doin this

hope this helps

mark me brailiest plzz

The intensity of sunlight is 1/16th at a distance of 4 astronomical units (AU) from the Sun.

To determine the distance at which the intensity of sunlight is 1/16th of the intensity at Earth, we can use the inverse square law of light intensity.

The inverse square law states that the intensity of light is inversely proportional to the square of the distance from the source. Mathematically, it can be expressed as:

Intensity = Constant / (Distance²)

Let's assume the distance from the Sun where the intensity of sunlight is 1/16th of the intensity at Earth is "x" astronomical units (au). Using the inverse square law, we can set up the following equation:

(1/16) * Intensity at Earth = Constant / (x²)

Since we're comparing the intensity at two different distances but assuming the constant remains the same, we can write:

Intensity at Earth / Intensity at x au = (Distance at x au)² / (1 au)²

Using the average Earth-Sun distance of 1 astronomical unit (au) and rearranging the equation, we have:

(1/16) = (1 au)² / (x au)²

Now, let's solve for "x":

(x au)² = (1 au)² * 16

x² = 16

x = √16

x = 4

Therefore, at a distance of 4 astronomical units (4 au) from the Sun, the intensity of sunlight will be 1/16th of the intensity at Earth.

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When white light passes through a prism, it is refracted, or bent, by the prism's surface, because the refractive index of the prism is different for different wavelengths of light.

Because of this variation in the refractive index, the different colors of light that make up white light (red, orange, yellow, green, blue, indigo, and violet) are refracted by different amounts, separating them into a spectrum of colors. This effect is known as dispersion.

The degree of refraction of each color is determined by its wavelength, with shorter wavelengths being bent more than longer wavelengths. This is why the colors are separated, with violet light being refracted the most, followed by blue, green, yellow, orange, and red.

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Answer:

West

Explanation:

This is because the first caar has more mass

Answer:

take any of them

Explanation:

mechanisms that convert mechanical energy to electrical energy are turbine steam engines, internal combustion engines, and wind turbines (Electric Generator

Answer:

Energy

Explanation:

Edge 2021

As part of his special theory of relativity, Einstein saw mass as a form of energy.

The theory of relativity as stated by Einstein stated that mass and energy are both interconvertible. This explains why energy is released when mass is lost.

Thus, as part of his special theory of relativity, Einstein saw mass as a form of energy.

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Therefore, about 0.255 grams of nitrogen gas would be needed to pressurize a tire with a volume of 18.0 liters to 32.0 psi at 25 degrees Celsius using pure nitrogen gas.

To solve this problem, we can use the ideal gas law, which states:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

First, we need to convert the volume to cubic meters and the pressure to Pascals:

V = 18.0 L

= 0.018 m³

P = (32.0 - 14.7) psi

= 17.3 psi

= 119310 Pa

Next, we need to calculate the number of moles of nitrogen gas needed:

n = PV/RT

where R = 8.314 J/mol·K is the gas constant for nitrogen gas, and T = 25 + 273 = 298 K is the temperature in Kelvin.

n = (119310 Pa × 0.018 m³) / (8.314 J/mol·K × 298 K)

= 0.0091 mol

Finally, we can calculate the mass of nitrogen gas using its molar mass:

m = n × M

where M = 28.014 g/mol is the molar mass of nitrogen gas.

m = 0.0091 mol × 28.014 g/mol

= 0.255 g

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An arrangement of atoms with synchronized magnetic fields is referred to as a "Magnetic Domain."

The magnetic field is the area in which a magnet produces its magnetic effects. We use the magnetic field as a tool to describe how the magnetic force is distributed in the vicinity and inside something magnetic in nature.

While opposite poles are drawn to one another, the same poles repel one another. When iron is rubbed against a magnet, the iron's atoms' north-seeking poles align in the same direction. The force generated by the aligned atoms creates a magnetic field.

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The energy of the light having a frequency of 2. 30 × 10¹⁷ Hz is 15.2398 x 10⁻¹⁷ J

The frequency of the light = 2.3 x 10¹² Hz

The energy of the photon can be found using the formula

          E = hν

where E is the energy of the photon

           h is the Planck constant (6.626 x 10⁻³⁴ Js)

           ν is the frequency of the light

So, let us substitute the known values in the above equation, we get

               E = 6.626 x 10⁻³⁴ x 2.30 x 10¹⁷

                  = 15.2398 x 10⁻³⁴ x 10¹⁷

                  = 15.2398 x 10⁻¹⁷ J

Therefore, the energy of the light is 15.2398 x 10⁻¹⁷ J

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We have that the spring constant of the spring  is mathematically given as

k=38.72

Question Parameters:

A 125 N object vibrates with

a period of 3.56 s when hanging from a spring.

Generally the equation for the time period  is mathematically given as

\(t=2\pi\sqrt{\frac{m}{k}}\)

Therefore

\(3.56=2*3.14\sqrt{\frac{12.5}{k}}\)

k=38.72

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Answer:

A.) Oxidation

Explanation:

:p

Hydrogen reacts with oxygen, hydrogen loses electrons. The term

applies to what happens to hydrogen in this reaction is

A. Oxidation

Oxidation is a process where a substance: Loses one or more electrons or gains an oxygen atom or we can say that oxidation is a process which involves the addition of oxygen or any electronegative element or the removal of hydrogen or any electropositive element.

Reduction is the gain of electrons or reduction is a process which involves the addition of hydrogen or any electropositive element or the removal of oxygen or any electronegative element.

A synthesis reaction is a type of reaction in which multiple reactants combine to form a single product. Synthesis reactions release energy in the form of heat and light, so they are exothermic.  

correct option is A. Oxidation

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Answer:

C. It will move away from the second magnet because like poles repel.

Explanation:

Answer:

C

Explanation:

Answer:

average speed, accelerated speed

Explanation:

Pace was first moving at 38 km/h which was his average speed but the fastest speed he went was 60 km/h so he accelerated.

Answer:

3 seconds

Explanation:

The initial velocity is 60 m/s at an angle of 30° to the horizontal, so we can calculate the initial velocity in the vertical direction as

Viy = Vi sin(θ)

Viy = 60 sin(30)

Viy = 60(0.5)

Viy = 30 m/s

Then, we can use the following equation to calculate the time that it takes to reach the maximum height.

At a maximum height the vertical velocity is 0 m/s, so replacing viy = 30 m/s, vfy = 0 m/s and g = 10 m/s², we get

Therefore, the answer is 3 seconds