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An Atwood's machine consists of blocks of masses M1=10 kg and M2=20 kg attached by a cord running over a pulley. The pulleys is a solid cylinder with mass M=8 kg and radius r=.2 m. The block of mass M2 is allowed to drop, and the cord turns the pulley without slipping. Find the acceleration of the system. Find the Tensions.
one solenoid is centered inside another. the outer one has a length of 45.0 cm and contains 6800 coils, what is the EMF induced in the inner solenoid
A peregrine falcon dives at a pigeon. The falcon starts with zero downward velocity and dives with the free-fall acceleration. how long does it take the falcon to intercept the pigeon
A 2000-kg elevator is rising and its speed is increasing at 4 m/s^2. What is the tension in the elevator cable
Two resistors have resistances R(smaller) and R(larger), where R(smaller)
Raindrops fall 1500 m from a cloud to the ground. If they were not slowed by air resistance, how fast would the drops be moving
The electric field midway between two equal but opposite point charges is 745 N/C, What is the magnitude of the charge on each
A diver springs upward from a diving board. At the instant she contacts the water, her speed is 8.90 m/s, and her body is extended at 75.0 degrees with respect to the horizontal surface of the water. Determine her initial velocity
To measure her speed, a skydiver carries a buzzer emitting a steady tone at 2500 Hz. Assume the air is calm and the speed of sound is independent of altitude. what beat frequency does she hear
Describe the three main layers of the Sun's interior and what do astronomers mean by a "model of the Sun" - Briefly describe how you would determine the absolute magnitude of a nearby star.
Two small plastic balls hang from threads of negligible mass. Each ball has a mass of 0.54 g and a charge of magnitude q. Find the magnitude of the charge on the balls
Two moles of an ideal diatomic gas have an initial pressure of 4:00 atm and initial volume of 16:0 L. What are the initial and final temperatures of the gas
Two point charges are placed on the x-axis. A charge -q is located at the origin, and a charge -2q is located at x = +d. at what location is the total electric potential zero
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