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Q. A gas expands and does P-V work on the surroundings equal to 307 J. At the same time, it absorbs 155 J of heat from the surroundings. Calculate the change in energy of the gas.
Q. If the ball is released from rest at a height of 0.91 above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? Assume the ball is a solid sphere of radius 3.7 and mass 0.14.
A 250 kg weather rocket is loaded with 100kg of fuel and fired straight up. It accelerates upward at 32m/s2 for 34 s, then runs out of fuel. overlook any air resistance effects.
After being accelerated to a speed of 1.7×10 5 m/s, the particle enters a uniform magnetic field of strength 1.00 T and travels in a circle of radius 35.0 cm (determined by observing where it hits the screen as shown in the figure). The results of th..
A 12.0 kg bucket of water of is suspended by a rope wrapped around a windlass, which is the solid cylinder 0.500 m in diameter with mass 14.0 kg. The cylinder is pivoted on a frictionless axle through its center. The bucket is released from rest at t..
A 210 km long high-voltage transmission line 2 cm in diameter carries a steady current of 960 A. If the conductor is copper with a free charge density of 9.0 x10^28 electrons per cubic meter, how many years does it take one electron to travel the ..
The ball is 21.9 m from the goal post. The ball is kicked with an initial velocity of 19.8 m/s at an angle θ above ground. Between what two angles, θ1 and θ2, will the ball clear the 2.74m high crossbar.
How numerous revolutionsthe wheel have made through the time
How much farther from the tower does the cannonball from the higher cannon land than cannonball from the lower cannon.
Co-60 is often used as a radiation source in medicine. It has a half-life of 5.25 years. How long, after a new sample is delivered, would the activity have decreased to about 1/3 its original value.
A solenoid in MRI is 2.40 m long, 94 cm in diameter, and 1200 turns of superconducting wire. Find a) inductance, b) induced emf in the solenoid while the current in the wire is changing from 0 to 2.5 kA in 30 s.
A 3.00-m-long, 400 kg steel beam extends horizontally from the point where it has been bolted to framework of a new building under construction. A 74 kg construction worker stands at the far end of the beam.What is the magnitude of the torque abo..
hysicists model a magnetic field by assigning to every point in space a vector that represents the strength and direction of the field at that point. Two magnetic fields that exist in the same region of space may be added as vectors at each point to ..
A metal rod of mass 50 and electrical resistance 0.10 rests on parallel horizontal rails that have negligible electric resistance. The rails are a distance = 10.0 apart. The rails are also connected to the voltage source providing a voltage of = 5..
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