An object is moving in the positive x-direction while a net force directed along the x-axis is exerted on the object. The figure above shows the force as a function of position. What is the net work done on the object over the distance shown?.
Answers
The net work done on the object over the distance shown is 8 Joules.
In this case, the interval of distance is [0, 5] m. T
herefore, the net work done on the object over the distance shown is given by the definite integral of the force function over the interval [0, 5] m as:
W = ∫0^5 F(x) dx
The graph shows that the force is constant and equal to 2 N over the interval [0, 2] m.
Therefore, the net work done over this interval is given by:
W1 = Fd = (2 N) (2 m) = 4 J
The force increases linearly from 2 N to 6 N over the interval [2, 4] m.
Therefore, the net work done over this interval is given by:
W2 = ∫2^4 F(x) dx = ∫2^4 (2x - 2) dx= [x^2 - 2x]2^4= (4 - 4) - (1 - 4) = -2 J
The force is constant and equal to 6 N over the interval [4, 5] m.
Therefore, the net work done over this interval is given by:
W3 = Fd = (6 N) (1 m) = 6 J
Hence, the net work done on the object over the distance shown is given by:
W = W1 + W2 + W3 = 4 J - 2 J + 6 J = 8 J
Therefore, the net work done on the object over the distance shown is 8 Joules.
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Related Questions
PLEASE HELPPP
Force: Adding vectors (find resultant force)
50N north plus 50N west Plus 50N north west
Answers
One way to do this is to draw a diagram of the vectors and use the head-to-tail method to find the resultant vector. We can start by drawing the vector 50N north, then draw the vector 50N west starting from the end of the first vector, and finally draw the vector 50N northwest starting from the end of the second vector and ending at the tip of the resultant vector. The resultant vector is the vector that starts at the beginning of the first vector and ends at the tip of the last vector.
Alternatively, we can use trigonometry to find the magnitude and direction of the resultant vector. We can break down each vector into its x and y components, then add up the x components and the y components separately to get the x and y components of the resultant vector. The magnitude of the resultant vector is then given by the square root of the sum of the squares of the x and y components, and the direction is given by the arctangent of the y component divided by the x component.
Using either method, we can find that the magnitude of the resultant force is approximately 70.7N, and the direction is approximately 45 degrees north of west
what value in electronics is most similar to water pressure expressed in psi?
Answers
The value in electronics that is most similar to water pressure expressed in psi is the electrical potential difference, also known as voltage. Both water pressure and voltage are used to measure the force or energy that is present in a system..
Water pressure is a measure of the force that water exerts on its surroundings. It is commonly measured in psi, which stands for pounds per square inch. This measurement tells us how much pressure there is in a given area of space. In electronics, there is a similar value that is used to measure the force or energy present in a system. This value is known as the electrical potential difference, or voltage.
Voltage is a measure of the energy that is available to do work in an electrical system. It is usually measured in volts (V).
Voltage tells us how much potential energy there is in a given electrical circuit. This potential energy can be used to power devices, generate heat, or perform other types of work that require energy. Voltage is similar to water pressure because both measurements tell us how much force or energy is present in a system.In electronics, voltage is often used to power devices such as lights, motors, and computers. It is also used to generate heat, as in the case of electric heaters. Voltage is a fundamental property of electricity, and it is one of the most important values in electronics.
The value in electronics that is most similar to water pressure expressed in psi is the electrical potential difference, also known as voltage. Both water pressure and voltage are used to measure the force or energy that is present in a system. Voltage is a fundamental property of electricity, and it is one of the most important values in electronics.
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If
you weigh 140 pounds, what is your weight in kilograms
Answers
which physical method of controlling microbial growth applies pressure to water to create steam?
Answers
The physical method of controlling microbial growth that applies pressure to water to create steam is called "autoclaving" or "sterilization by autoclave."
Autoclaving is a widely used method for sterilization in various industries, including healthcare, laboratories, and food processing. It involves subjecting materials or objects to high-pressure saturated steam at elevated temperatures. The combination of pressure and heat effectively kills microorganisms, including bacteria, viruses, fungi, and spores.
Autoclaves consist of a sealed chamber that can withstand high pressures, along with a source of heat and a means to generate steam. The process involves placing the items to be sterilized inside the autoclave chamber and then raising the temperature and pressure to the desired levels. The high-pressure steam penetrates the materials and destroys the microorganisms present, ensuring effective sterilization.
The typical conditions for autoclaving include temperatures ranging from 121 to 134 degrees Celsius (250 to 273 degrees Fahrenheit) and pressures between 15 and 30 pounds per square inch (psi). These conditions are maintained for a specified period, usually around 15 to 30 minutes, depending on the size and nature of the items being sterilized.
Autoclaving is advantageous because it provides a reliable and efficient method for achieving sterility. It can be used to sterilize a wide range of materials, including laboratory glassware, surgical instruments, medical equipment, media and solutions, textiles, and more. The high temperatures and pressure ensure thorough sterilization, and the process is relatively quick compared to other methods.
However, it is important to note that not all materials can be autoclaved, as some may be sensitive to heat or moisture. Additionally, certain biological substances, such as certain types of infectious waste or toxins, may require specialized treatment beyond autoclaving.
Overall, autoclaving is a highly effective method for controlling microbial growth by applying pressure to water to create steam. Its widespread use in various industries is a testament to its reliability and efficiency in achieving sterilization.
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Two forces each of magnitude 25N acts in opposite direction at the opposite end of a circular ring. If the diameter at the ring is 65cm. Calculate the magnitude of the couple acting on the ring.
Answers
Answer:
The magnitude of the couple is 16.25 Nm.
Explanation:
A couple is a force that always produce a turning effect of objects on which it is applied. It has applications in doors, taps, revolving doors etc. Couple is a two equal but opposite force applied on an object.
couple = force x length
From the given question, the couple acting on the ring can be determined as;
couple = 25 x 0.65
= 16.25 Nm
The magnitude of the couple is 16.25 Nm.
A 6.00 volt battery is in a circuit with two resistors, A and B, connected in parallel. If the current flowing
out of the battery is 90.0 mA, what is the value in ohms of B if A is 100 ?
Answers
Answer: \(200\Omega\)
Explanation:
Given
The battery used is 6V in magnitude
The current flow is 90 mA
If the resistance of A is \(100\Omega\)
Net resistance of the circuit is
\(R_{net}=\dfrac{V}{I}\\\\\Rightarrow R_{net}=\dfrac{6}{90\times 10^{-3}}\\\\\Rightarrow R_{net}=\dfrac{200}{3}\Omega\)
If A and B are in parallel then their net resistance must be \(\frac{200}{3}\)
\(\dfrac{1}{\frac{200}{3}}=\dfrac{1}{100}+\dfrac{1}{R_b}\\\\\Rightarrow \dfrac{1}{R_b}=\dfrac{3}{200}-\dfrac{1}{100}\\\\\Rightarrow \dfrac{1}{R_b}=\dfrac{3-2}{200}\\\\\Rightarrow R_b=200\Omega\)
kindly explain question numbers 26 and 27
Answers
26).
The complete pattern of a pendulum is ...
-- out to one side
-- back to the center
-- out to the OTHER side
-- back to the center.
So, on the graph, the complete period is one up-loop and one down-loop.
That's 6 seconds. (b)
27).
This question is just asking for the frequency, without using the word.
Frequency is always (1/period). That's 1/6 of a second. (a)
(This kinda makes sense. If you want to do something in 6 seconds, you need to do 1/6 of it every second. Right ?)
D=12000 m
T= 30min
V=?
Ayudenme en este ejercicio xfa
En m/min y en Km/h
Answers
propose a way of solving this error in physics
Answers
What is their to fix?
What is the electric potential, i.e. the voltage, 0.30 m from a point charge of 6.4 x 10-C?
Answers
Answer:
V = 192 kV
Explanation:
Given that,
Charge, \(q=6.4\times 10^{-6}\ C\)
Distance, r = 0.3 m
We need to find the electric potential at a distance of 0.3 m from a point charge. The formula for electric potential is given by :
\(V=\dfrac{kq}{r}\\\\V=\dfrac{9\times 10^9\times 6.4\times 10^{-6}}{0.3}\\\\V=192000\ V\\\\V=192\ kV\)
So, the required electric potential is 192 kV.
Why is it that when I ask a physics question, literally NO ONE answers. Like I thought that this was a site where al answers were answers. Its so frustrating!!!!! I bet no one will look at this because it says physics.
Answers
Answer:
ooof mood
Explanation:
Answer:
i kinda like physics.
Explanation:
If you need 1 frame, 2 wheels, 1 seat, and 2 pedals to make a bicycle, what is your limiting reactant if you have the following materials?
a. 5 frames
b. 10 seats
c. 16 wheels
d. 20 pedals
Answers
The limiting reactant is the material that is in the shortest supply and will run out first, thus limiting the production of the bicycle. To determine the limiting reactant, we need to calculate how many bicycles we can make with each material:
a. With 5 frames, we can make a maximum of 5 bicycles.
b. With 10 seats, we can make a maximum of 10 bicycles.
c. With 16 wheels, we can make a maximum of 8 bicycles (since each bicycle requires 2 wheels).
d. With 20 pedals, we can make a maximum of 10 bicycles (since each bicycle requires 2 pedals).
Therefore, the limiting reactant is c. 16 wheels, as we can only make a maximum of 8 bicycles with this amount of wheels, even though we have enough of all the other materials to make 10 bicycles.
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How plants are in the
Solora System
Answers
Answer:
there was 9 but pluto got kicked out of the solar System so 8
Two units of measurement for energy are calories and joules. The measurement of 32. 3 kj is the same amount of energy as ___________.
Answers
The measurement of 32.3 kJ is equivalent to approximately 7,726.94 calories.
Energy can be measured in different units, such as calories and joules. To convert between these units, we need to know the conversion factor.
One joule (J) is equivalent to 0.239005736 calories (cal). Therefore, to convert kilojoules (kJ) to calories, we need to multiply the value in kilojoules by the conversion factor.
In this case, we have 32.3 kJ. To convert it to calories, we multiply 32.3 by the conversion factor:
32.3 kJ * 0.239005736 cal/J ≈ 7,726.94 calories
Hence, the measurement of 32.3 kJ is approximately equivalent to 7,726.94 calories. It's important to note that the conversion factor used here is an approximate value, and the exact conversion factor may vary slightly depending on the specific definitions and standards used for calories and joules.
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The foundation of quantum mechanics is that of wave–particle ________.
Answers
Answer:
Wave-Particle Duality.
An 0. 80-kg block is held in place against the spring by a 67-n horizontal external force (see the figure. The external force is removed, and the block is projected with a velocityv1 = 1. 2 m/s upon separation from the spring. The block descends a ramp and has a velocity v2 = 1. 9 m/s at the bottom. The track is frictionless between points a andb. The block enters a rough section atb, extending toe. The coefficient of kinetic friction over this section is 0. 39. The velocity of the block isv3 = 1. 4 m/s atc. The block moves on tod, where it stops. The spring constant of the spring is closest to
Answers
The spring constant of the spring is closest to 210 N/m.
First, let's calculate the potential energy stored in the spring:
PE = 1/2 k x^2
Therefore:
x = F_ext / k = 67 N / k
and:
\(PE = 1/2 k (67 N / k)^2 = 2244.5 J/k\)
Next, let's calculate the kinetic energy of the block at point b:
\(KE\_b = 1/2 m v2^2 = 0.5 * 0.8 kg * (1.9 m/s)^2 = 1.216 J\)
The work done by friction over the rough section is given by:
\(W\_f = f\_k * d\)
The frictional force is:
f_k = μ_k * m * g
Substituting the given values, we get:
\(f\_k = 0.39 * 0.8 kg * 9.81 m/s^2 = 3.06 N\)
The distance traveled over the rough section is:
\(d = h\_b - h\_c = 0.3 m - 0.1 m = 0.2 m\)
Therefore:
\(W\_f = 3.06 N * 0.2 m = 0.612 J\)
Finally, let's calculate the kinetic energy of the block at point c:
\(KE\_c = 1/2 m v3^2 = 0.5 * 0.8 kg * (1.4 m/s)^2 = 0.392 J\)
Using the principle of conservation of mechanical energy:
\(PE = KE\_b + KE\_c + W_f\)
Solving for k, we get:
\(k = 2 * (KE\_b + KE\_c + W_f) / (67 N / k)^2\)
Substituting the given values, we get:
\(k = 2 * (1.216 J + 0.392 J + 0.612 J) / (67 N / k)^2 = 210 N/m\)
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what is true about current that flows through resistors in parallel? all current flows through the lowest value resistor(s). all current flows through the highest value resistor(s). the current is determined by v
Answers
A resistor is a passive two-terminal electrical component used in circuits to implement electrical resistance. Resistor use in electronic circuits includes lowering current flow, adjusting signal levels, dividing voltages, influencing active devices, and terminating transmission lines.
The voltage drop across a resistor increases with resistor size and consumes more energy as a result. Voltage drop can be confirmed using Ohm's Law. Voltage in a DC circuit is equal to current times resistance.
V = I R.
Resistors are said to as being in parallel when two nodes share terminal connections. The lowest parallel resistor is larger than the comparable overall resistance.
The supply current is equal to the total of the currents flowing through all of the resistors when they are linked in parallel. The supply current is equal to the sum of the currents in a parallel circuit's branches. The potential difference across parallel connections of resistors is the same.
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Find the mass m of the counterweight needed to balance a truck with mass M=1340kg on an incline of θ=45° . Assume both pulleys are frictionless and massless.
Answers
The mass of the counterweight needed to balance the truck is approximately m = 670 kg.
To balance the truck on the incline, the gravitational forces on both sides of the pulley system must be equal. The gravitational force on the truck is given by F_truck = M * g, where M is the mass of the truck (1340 kg) and g is the acceleration due to gravity.
The gravitational force on the counterweight is given by F_counterweight = m * g, where m is the mass of the counterweight. Since the pulleys are frictionless and massless, the tension in the rope connecting the two sides is the same. Therefore, we can equate the gravitational forces:
M * g = m * g
Simplifying, we find:
m = M / 2 = 1340 kg / 2 = 670 kg.
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Sonar question: A person's yells into a deep well, sending a sound wave that travels at a speed of 50 m/s. The echo is heard in 6 seconds.
How deep is the well? Remember, speed distance/time
Answers
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the big bang theory is supported by two major lines of evidence that alternative models have not successfully explained. what are they? the big bang theory is supported by two major lines of evidence that alternative models have not successfully explained. what are they? (1) the universe is expanding (2) the observed ratio of spiral to elliptical galaxies in the universe (1) the existence and specific characteristics of the observed cosmic microwave background (2) the observed overall chemical composition of the universe (1) the episode of inflation thought to have occurred in the early universe (2) the separation of gravity and the other forces at the end of the planck era (1) the early universe was hot and dense (2) we see distant galaxies as they were in the distant past
Answers
The two major lines of evidence that support the Big Bang theory and have not been successfully explained by alternative models are:
The existence and specific characteristics of the observed cosmic microwave background (CMB): The CMB is a form of radiation that fills the entire universe and is believed to be the leftover heat from the early universe when it was hot and dense. The Big Bang theory predicts the existence of the CMB and its specific characteristics, such as its uniformity and specific temperature fluctuations, which have been observed and confirmed through various experiments.
The observed overall chemical composition of the universe: The Big Bang theory predicts that the early universe was primarily composed of hydrogen and helium, with trace amounts of other elements. Observations of the chemical composition of the universe have confirmed this prediction and provide strong support for the Big Bang theory.
The other options provided in the question are not accurate as they do not represent the two major lines of evidence that support the Big Bang theory. The expansion of the universe is actually a consequence of the Big Bang theory, rather than evidence for it. The observed ratio of spiral to elliptical galaxies is not a major line of evidence for the Big Bang theory. The episode of inflation and separation of gravity from other forces are both aspects of the Big Bang theory itself and not independent lines of evidence supporting it. Lastly, the statement "the early universe was hot and dense" is a prediction of the Big Bang theory and not a line of evidence supporting it.
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A child who is swimming toward shore at 0.78 m/s sees shark and picks up his speed
to 1.89 m/s. He covers 17.5 m until he lands on shore. What was his acceleration?
Answers
Answer:
0.085m/s²
Explanation:
Use v²=v0²+2a(d)
solve for a
v²-v0²/2d=a
Plug in givens
1.89²-0.78²/2*17.5=a
Plug into calculator
a=0.085m/s²
The cricket player while catches the ball wears gloves and why
Answers
Answer:
the ball is travelling very fast and the player can get injured if he doesn't wear gloves
Explanation:
A hydrogen atom is in its ground state (nᵢ = 1) when a photon impinges upon it. The atom absorbs the photon, which has precisely the energy required to raise the atom to the nf = 3 state. (a) What was the photon's energy (in eV)? _________eV (b) Later, the atom returns to the ground state, emitting one or more photons in the process. Which of the following energies describes photons that might be emitted thus? (Select all that apply.) O 1.89 ev O 12.1 eV O 10.2 ev O 13.6 ev
Answers
A hydrogen atom is in its ground state (nᵢ = 1) when a photon impinges upon it. The atom absorbs the photon, which has precisely the energy required to raise the atom to the nf = 3 state. (a) The photon's energy that was absorbed is approximately 1.51 eV (negative sign indicates absorption).(b)option B and C are correct.
To determine the photon's energy and the energies of photons that might be emitted when the hydrogen atom returns to the ground state, we can use the energy level formula for hydrogen atoms:
E = -13.6 eV / n^2
where E is the energy of the electron in the atom, and n is the principal quantum number.
(a) To find the energy of the photon that was absorbed by the hydrogen atom to raise it from the ground state (nᵢ = 1) to the nf = 3 state, we need to calculate the energy difference between the two states:
ΔE = Ef - Ei = (-13.6 eV / 3^2) - (-13.6 eV / 1^2)
Calculating the value of ΔE:
ΔE = -13.6 eV / 9 + 13.6 eV
= -1.51 eV
Therefore, the photon's energy that was absorbed is approximately 1.51 eV (negative sign indicates absorption).
(b) When the hydrogen atom returns to the ground state, it can emit photons with energies corresponding to the energy differences between the excited states and the ground state. We need to calculate these energy differences and check which values are present among the given options.
ΔE1 = (-13.6 eV / 1^2) - (-13.6 eV / 3^2) = 10.20 eV
ΔE2 = (-13.6 eV / 1^2) - (-13.6 eV / 4^2) = 10.20 eV
ΔE3 = (-13.6 eV / 1^2) - (-13.6 eV / 5^2) = 12.10 eV
ΔE4 = (-13.6 eV / 1^2) - (-13.6 eV / 6^2) = 12.10 eV
ΔE5 = (-13.6 eV / 1^2) - (-13.6 eV / 7^2) = 13.55 eV
ΔE6 = (-13.6 eV / 1^2) - (-13.6 eV / 8^2) = 13.55 eV
ΔE7 = (-13.6 eV / 1^2) - (-13.6 eV / 9^2) = 13.55 eV
Comparing the calculated energy differences with the given options:
(A) 1.89 eV: This energy difference does not match any of the calculated values.
(B) 12.1 eV: This energy difference matches ΔE3 and ΔE4.
(C) 10.2 eV: This energy difference matches ΔE1 and ΔE2.
(D) 13.6 eV: This energy difference does not match any of the calculated values.
Therefore option B and C are correct.
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According to ohms law, as the voltage increases across a 40 ohm resistor what happens to the current, resistors, and resistance
Answers
Answer:
As the voltage increases, the current flowing through the circuit increases while the resistance of the resistor remains constant.
Explanation:
Ohm's law states that the current flowing through a circuit is directly proportional to the applied voltage.
V = IR
where;
I is the current
R is the resistance
V is the applied voltage
Based on this law (Ohm's law), as the voltage increases, the current flowing through the circuit increases while the resistance of the resistor remains constant.
What does Newtons second law explain? (Stemscopes)
Answers
Answer:
hey!!
Newton's second law of motion, also known as the law of acceleration, explains the relationship between an object's mass, the applied force, and its resulting acceleration. The law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Mathematically, Newton's second law can be expressed as:
F = ma
Where:
F represents the net force acting on the object,
m represents the mass of the object, and
a represents the acceleration produced by the force.
In simpler terms, Newton's second law states that the force acting on an object determines how much it accelerates. A larger force applied to an object will result in a greater acceleration, while a smaller force will produce a smaller acceleration. Additionally, if the mass of the object is increased, the same force will produce a smaller acceleration, and vice versa.
This fundamental law of motion helps us understand how forces and masses interact to produce motion. It is widely applicable and plays a crucial role in fields such as physics, engineering, and everyday life when studying the behaviour of objects in motion.
i hope this helps you :)
An electric current can be generated in a wire in a circuit when at least part of the wire ____________.is coated in plastic.is made of aluminum.moves through and cuts magnetic field lines.is not moving.
Answers
Answer:
Explanation:
When a coil of wire is moved around a magnet, it induces electrons into the wire and creates electric current. Thus, the correct option is
moves through and cuts magnetic field lines
Help me on this ;(
This is so confusing
Answers
This means all objects will have the same gravitational force no matter the weight, shape, or texture.
The amount of kinetic energy in a moving object depends on its mass and what
Answers
Answer:
Kinetic energy depends on mass and speed (or magnitude of velocity).
K.E. = 1/2 M S² or The amount of kinetic energy of a moving object has dependence on its mass and its velocity.
Explanation: They are both right for a certain question
The kinetic energy of a moving object depends on its mass and velocity. The higher the velocity higher will be the kinetic energy. Mass also have the similar effect.
What is kinetic energy?Kinetic energy of an object is the energy generated by virtue of its motion. When particles of an object acquire much energy to overcome the intermolecular force, they gain kinetic energy to move apart.
Kinetic energy is related to the mass and velocity of the moving object. The expression relating kinetic energy with these parameters is written below:
Ke = 1/2 mv².
As per the relation, the kinetic energy of an object increases with an increase in mass or velocity or both. Hence, massive objects with greater velocity is having greater kinetic energy.
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Water waves are diffracted on passing through a gap. How is the amount of diffraction changed as a result of:
a widening the gap without changing the wavelength
b increasing the wavelength of the water waves without changing the
gap width
c increasing the wavelength of the water waves and reducing the
gap width
d widening the gap and increasing the wavelength of the waves?
Answers
When the gap width is greater than the wavelength, the wave passes across the gap and does not expand out significantly on the opposite side (bottom movie).
How do you define wavelength and frequency?Two crucial aspects of a wave cycle are frequency and wavelength. Moreover, the term "wavelength" refers to the separation of any two corresponding locations on adjacent waves. The quantity of waves that travel through a certain spot in a given amount of time is also known as frequency.
Is light's wavelength the same thing?The frequency is the number of crests that hit the beach each second, whereas the wavelength is the distance between successive crests. The only difference is that instead of talking about water, we do so while discussing light, which is precisely the same.
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what is the kinetic energy of a flying bird of mass 600g flying with velocity of 10m/s
Answers
Answer:
30 J
Explanation:
You have to transform g in kg, so 600 g=0,6 kg
the kinetic energy value is
K= ½ mv² so it is K=½ (0.6×100)=30 J
\(\text{Kinetic energy,}\\\\~~~~~~E_k = \dfrac 12 mv^2\\\\~~~~~~~~~~=\dfrac 12 \times 6\times 10^{-1} \times 10^2~~~~~~~;[m = 600 g = 600 \times 10^{-3}~ \text{kg} = 6\times 10^{-1}~ \text{kg}]\\\\~~~~~~~~~~=\dfrac{60}2\\\\~~~~~~~~~~= 30~ J\)