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A mass M is suspended from a spring and oscillates with a period of 0.860 s. Each complete oscillation results in an amplitude reduction of a factor of 0.98 due to a small velocity dependent frictional effect. Calculate the time it takes for the total energy of the oscillator to decrease to 0.50 of its initial value.
A .32 caliber bullet fired from a revolver with a 3 in long barrel will have a relatively low muzzle speed of about 200 m/s. how long will whole trip take
A box of textbooks of mass 24.7 kg rests on a loading ramp that makes angle a with the horizontal. The coefficient of kinetic friction is .25 and the coefficient of static friction is .37. Find out the minimum angle at which the box starts to sl..
An electron enters a region of a uniform electric field (E= 50 N/C) with an initial velocity of 40Km/s directed the same as the electric field. what is the speed of the electron 1.5ns after entering this region?
Consider a hypothetical planet in our solar system whose average distance from the Sun is about four times that of Earth. Decide the orbital period for this hypothetical planet.
If the two balls started rolling at the same time at a point 1.2 m behind the edge of the table, will they reach the floor at the same time? define.
Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 6.3 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mole
A monatomic ideal gas at high temperature T in a discharge tube has a triply degenerate excited state at an energy e above the ground state, Find the ratio population of the excited state to that of the ground state
Suppose that the initial ray is one of many which leaves a point on an object positioned at do = a before the mirror. What condition is needed to form an image at distance di = b?
A 50 kg woman jumps straight into the air, rising 0.8m from the ground. What impulse does she receive from the ground to attain this height
A 17.4kg block is dragged over a rough, horizontal surface by a constant force of 160N acting at an angle of 25.1 degrees above the horizontal. Find the magnitude of the work done by the force of friction
A 700 N window washer is standing on a uniform scaffold supported by a vertical rope at each end. The scaffold weighs 200 N and is 3 m long. what is the force in each rope when washer stands 1 m from one end.
If the magnetic field in a traveling EM wave has a peak magnitude of 13.3nT, what is the peak magnitude of the electric field
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