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A 200g oscillator in a vacuum chamber has a frequency of 2hz. When air is admitted, the oscillation decreases to 60% of its initial amplitude in 50s How many oscillations will have been completed when the amplitude is 30% of its initial value?
A 1.2µF capacitor is charged to a potential difference of 11.0V. The wires connecting the capacitor to the battery are next disconnected from the battery and connected across a second, initially uncharged, capacitor. The potential difference across t..
A soldier is tasked with measuring the muzzle velocity of a new rifle. Knowing the principles of projectile motion, What muzzle velocity should the soldier report to his sergeant
The combination of an applied force and a friction force produces a constant total torque of 35.2 N · m on a wheel rotating about a fixed axis. The applied force acts for 6.10 s. During this time, the angular speed of the wheel increases from 0 to..
A circuit consists of a 12.0- battery connected to three resistors (40 , 16 and 120 ) in series. Find the current that flows through the battery
During an adiabatic process, the temperature of 3.92 moles of a monatomic ideal gas drops from 485 oC to 205 oC. For this gas, find (a) the work done by the system, (b) the net change in internal energy of the system, and (c) the net heat absorbed by..
a small charged pith ball is suspended 2 cm above a second charged pitch ball resting on an insulated surface. what charge must be on the upper ball to lift the lower ball
A golfer hits a shot to a green that is elevated 2.60 m above the point where the ball is struck. find the speed of the ball just before it lands
You are rotating a 2.0kg rock in a vertical circle,using a very light string. Find the speeds of the rock at the highest and lowest position
The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is 84.4 m. How tall is the antenna
questiona white billiard ball with mass mw 1.32 kg is moving directly to the right with a speed of v 2.92 ms and
In an X ray scattering measurement the first order diffraction peak is observed at angle 1= 17.4 deg. What is the angle of the third order peak
A ball is thrown directly downward with an initial speed of 8.60 m/s, After what time interval does it strike the ground
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