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The air inside a bicycle tire pump has 221 joules of work done on it as 60.1 joules of heat is conducted away from it. What is the change in internal energy of the air?
Consider a group of 20 molecules with the following speeds: three have speed 1 m/s, Determine the rms speed (in m/s) of the molecules in this group at this instant in time
A spring of k=12.00 N/m has a block of mass 11- kg attached to it on a frictionless table. If the block is pulled a distance 0.17m to the right and released from rest, how long would it take the block to return to its equilibrium position? Give yo..
The drawing shows four insulated wires overlapping one another, forming a square with 0.050-m sides, Calculate the current I.
An ideal heat engine absorbs 81.2 kJ of heat and exhausts 66.1 kJ of heat in each cycle, How much work is done in a cycle
What is the period of the motion.
A parallel combination of an 10 resistor and an unknown resistor R is connected in series with a 13 resistor and a battery. What is the unknown resistance R
What is tension in the cord
Illustrate what is the gauge pressure at the upper face of the block? what is the gauge pressure at the lower face of the block? what is the mass of the block?
The magnitude of the force of friction acting on the block between A and is 1.2N and points A and B are 0.5 m apart. If the kinectic energies of the block at A and B are 4J and 5.6 J, respectively, how much work is done on the block by the force p..
The average density of the planet uranus is 1.27 x 10^3 kg/m^3. The ratio of the mass of neptune to that of Uranus is 1.19. The ratio of the radius of Neptune to that of Uranus is 0.969. Find the average density of Neptune.
You look directly overhead and see a plane exactly 1.2·km above the ground, flying faster than the speed of sound. Find the angle of the shock wave cone
A hydrogen atom initially in its ground state (n =1) absorbs a photon and ends up in the state for which n = 3. What is the energy of the absorbed photon
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