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Some sliding rocks approach the base of a hill with a speed of 17.0 . The hill rises at 41.0 above the horizontal and has coefficients of kinetic and static friction of 0.370 and 0.560, respectively, with these rocks. Start each part of your solution to this problem with a free-body diagram.
A tiny source is emitting electromagnetic radiation equally in all directions. What is the power with which the source emits radiation
A rocket blasts off and moves straight upward from the launch pad with a constant acceleration. After 3.0 seconds the rocket is at a height of 77 m. what is its the speed at this time
An RLC circuit is driven by a generator with an emf amplitude of 86.3 V and a current amplitude of 1.50 A. The current leads the emf by 0.516 rad. What are the (a) impedance and (b) resistance of the circuit?
a 125g mass attached to a spring oscillates with an amplitude of 7.8cm and a maximum speed of 0.625ms. find the force
A boy of mass 50 kg runs up a hill of vertical height 300 m in 20 minutes. calculate the work he does climbing the hill
an x-ray tube uses a 20000 volt difference to accelerate electrons across a 3cm gap between the plates of a parallel
To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest. find the average induced emf in the coil during this time interval
You are asked to design a spring that will give a 1200-kg satellite a speed of 3.50 m/s relative to an orbiting space shuttle. What distance must the spring be compressed
a large cruise ship of mass 6.80 x 107 kg has a speed of 12.8 ms at some instant. a what is the ships kinetic energy at
a copper piece of mass 10g is suspended by a vertical spring. The spring elongates 1 cm over its natural length to keep the piece in equilibrium. Find the elongation of the spring
two strings of identical mass and length are stretched with their ends fixed but the tension in one string is 1.10
Suppose you are in a high-speed boat moving at 18.0 m/s directly into approaching 1.10 m wavelength wave. What is the time interval between wave peaks hitting the boat
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