Define the term Mechanical Equivalent of Heat?

Q: 1.21 A team is designing a helium-filled balloon that will fly to an altitude of 80,000 ft. As the b...

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Q: Three forces acting on an object are given by F, = (-2.15î + 6.80j) N, F, = (4.80î – 2.5j) N, and F,...

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Q: A train 500 m long is moving on a straight track with a speed of 81.0 km/h. The engineer applies the...

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Q: You have an atomic nucleus with 9 protons, placed at x = 7.5 Angstroms. What TWO values of x (along ...

A: Consider the case when the electric potential is zero in a place between the position of electron an...

Q: A chair of mass 15.0 kg is sitting on the horizontal floor; the floor is not frictionless. You push ...

A: The concept used to solve the problem is Newton’s second law and equilibrium condition for force. Ne...

Q: A converging lens and a converging mirror have the same focal length in air. Which one has a longer ...

A: Reflection is independent of refractive index and hence there will be no change in the focal length ...

Q: There are many subtle effects that must be taken into account in calculations involving GPS satellit...

A: By using equation, v = ( G m2 / R + h )1/2 v= ( 6.67 x 10-11 x 5.98 x1024 / 20200 x 103 + 6.38 x 106...

Q: How much fuel would be needed for a 1000-kg rocket (this is its mass with no fuel) to take off from ...

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Q: a. An FM radio station broadcasts at a frequency of 101.3 MHz. What is the wavelength?b. What is the...

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Q: This time your object has a mass of 43.8 kg. You separate the protons and electrons into two boxes l...

A:   The potential energy of the system is (KQ1Q2/r) Work done in such cases is equal to change in pote...

Q: Now you have a nucleus with 8 protons at x = 6.4 Angstroms on the x-axis. What is the value of the e...

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Q: An astronaut is a short distance away from her space stationwithout a tether rope. She has a large w...

A: Given An astronaut is a short distance away from her space stationwithout a tether rope. She has a l...

Q: You are 2.4 m from a plane mirror, and you would like to take a picture of yourself in the mirror. Y...

A: Given: Distance from the plane mirror = 2.4 m  

Q: A ball is thrown three times at the same speed from the top of a building. One time it is thrown str...

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Q: (II) A skier traveling 11.0 m/s reaches the foot of a steadyupward 19° incline and glides 15 m up al...

A: From above figure, Initial total energy is equals to the sum of final total energy with work done o...

Q: 39. In 1967. New Zealander Burt Munro set the world record for an Indian motorcycle, on the Bonnevil...

A: Since you are posted more than one question, we will answer the first question(question no.39). If a...

Q: A heat engine has a power output of 5kW and an efficiency of 25%.This engine expels 8000J of exhaust...

A: Let the energy taken in during each cycle is Etaken. Let the energy expelled in each cycle is Eexpel...

Q: Problem 7: Consider the point charges arranged at the corners and at the center of a square, as depi...

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Q: An 18-kg sled starts up a 28° incline with a speed of 2.3 m/sThe coefficient of kinetic friction is ...

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Q: A electric field question

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Q: A comet goes around the sun in an elliptical orbit. At its farthest point, 345 million miles from th...

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Q: Explain why 231-Th-90 is likely to be a beta minus emitter

A: Why 231-Th-90 is likely to be a beta minus emitter.

Q: A mass attached to the end of a spring is stretched a distance x0 from equilibrium and released. At ...

A: a. according to the conservation of energy,  

Q: Problem 37: Consider the following circuit of three resistors (R1, R2, and R3), with batteries that ...

A: Given: The value of e.m.f. E1=19.5 V The value of e.m.f. E2 = 38.5 V  

Q: Graph of potential energy per nucleon, MeV (y axis) against nucleon number, A (x axis)

A: Graph of potential energy per nucleon, MeV (y axis) against nucleon number, A (x axis) is shown as b...

Q: A constant-volume gas thermometer contains a fixed amount of gas. What property of the gas is measur...

A: Constant volume gas thermometer

Q: Between t=0t=0 and t=t0t=t0, a rocket moves straight upward with an acceleration given by a(t)=P+Qt1...

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Q: (d) Find the magnitudes of the contact forces between the blocks. between block 1 and 2 N between bl...

A: (d). All the three blocks will move with the same accelaration ,i.e.     Magnitude of contact force...

Q: 10) Now you have a nucleus with 13 protons at x = 6.2 Angstroms on the x-axis. How much work would i...

A: The expression for the work done required to bring the charge q2 from its initial position to final ...

Q: The long, thin wire shown in the figure is in a region of constant magnetic field is in a region of ...

A: a) Given data The current in the wire is given as i = 6.2 A. The angle between wire and the magnetic...

Q: The heaviest invertebrate is the giant squid, which is estimated to have a weight of about 0.22 tons...

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Q: The Spitzer Space Telescope was launched in 2003 to detect infrared radiation. Suppose a particular ...

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Q: Consider an object of mass 38.7 kg. Assume that it s made up of equal numbers of protons, neutrons, ...

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Q: A bullet is fired through a board 11.0 cm thick in such a way that the bullet's line of motion is pe...

A: Given: The thickness of the bullet is d = 11.0 cm = 0.11 m. The initial velocity of the bullet is Vi...

Q: Two pulses move in opposite directions on a string and are identical in shape except that one has po...

A: When two pulses travel in the opposite direction, the pulses cancel each other in terms of displacem...

Q: A woman holds a makeup mirror with a radius of 120 cm a distance of 20 cm from her face. What is the...

A: Given Data: The radius of a mirror is, R=120 cm The object’s distance is, u=-20 cm   The expression ...

Q: A piece of transparent plastic is molded into the shape of a converging lens, but it is hollow insid...

A: If the refractive index is higher outside than inside then it will behave as a diverging lens. Imagi...

Q: When you drive to work on a winding road, the odometer of your car changes from 27120 km to 27140 km...

A: Given: Initial distance = 27120 Km Final distance = 27140 Km Time interval = 30 minutes  

Q: When you ride a bicycle at constant speed, almost all of the energy you expend goes into the work yo...

A: Given:- mcyclist+bicycle= 60 kg v2= 10 m/s FD = 10 N  when the speed was 5 m/s d= 1 km = 1000 m  

Q: In the measurement of length of a cylinder, the main scale reading of a vernier caliper is 2.8 cm, t...

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Q: A capacitor consisting of two plates with empty space between them is charged to a voltage V using a...

A: Write the formula for the capacitance of a capacitor.

Q: A cube (1m x 1m x 1m; volume = 1 m3; density = ρ kg/m3) is floating as shown. The density of oil is ...

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Q: A horizontal force F → is applied to a uniform sphere in direction exact toward the center of the sp...

A: The schematic diagram is as shown below:

Q: a. Consider one point on an object near a lens. What is the minimum number of rays needed to locate ...

A: a. To locate the image formed by the lens the following steps can be follows. Step 1: Draw a ray par...

Q: A ball is thrown directly downward with an initial speed of 7.15 m/s, from a height of 29.6 m. After...

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Q: A. An infinitely large charge surface is measured to have electric field E = 5.0 x 10^-4 N/C, find t...

A: A) Given data The electric field is given as E = 5.0 x 10-4 N/C. The relationship between the electr...