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A 1.50-kg ball has zero kinetic and potential energy. Samdrops the ball into a 6.00-m deep well. Just before the ball hitsthe bottom, what is the sum of its kinetic and potential energy?
A tight uniform string with a length of 1.80 m is tied down at both ends and placed under a tension of 100 N. What is the mass of the string
The free oscillations of a mechanical system are observed to have a certain angular frequency w1. what is the quality factor Q
A rotating door is made from four rectangular sections, as indicated in the drawing. The mass of each section is 80kg. A person pushes on the outer edge of one section with a force of F = 72N that is directed perpendicular to the section. Find out..
A series RLC circuit has a peak voltage of 154 V and a peak current of 5 A. If the current lags the voltage by 45 degrees, what is the average power of the circuit
Two spectators at a soccer game in Montjuic Stadium see, and a moment later hear, the ball being kicked on the playing field. How far is each spectator from the player
A sled weighs 100 N. It is held in place on a frictionless 20 degree slope by a rope attached to a stake at the top of the slope; What is the normal force acting on the sled
A moving particle encounters an external electric field that decreases its kinetic energy from 9520 eV to 7060 eV as the particle moves from postition A to position B. The electric potential at A is -55.0V, and the electric potential at B is +27.0 V...
question1consider a simple pendulum consisting of a point mass m attached to the end of a mass less rod. the pendulum
A hydrogen atom is in its fifth excited state, with principalquantum number 6. etermine the maximum possible orbital angular momentum of the electron after emission
The length of a simple pendulum is 0.65 m and the mass of the particle (the "bob") at the end of the cable is 0.26 kg. What is the angular frequency of the motion
The pitch of the sound from a race car engine drops the musical interval of a FIFTH when it passes the spectators. How fast is the race car moving
q 1- how much pressure would be necessary to compress a quantity of mercury by 0.015 percent?2- two metal plates are
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