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A 21.0-kg box rests on a frictionless ramp with a 14.3° slope. The mover pulls on a rope attached to the box to pull it up the incline. If the rope makes an angle of 38.4° with the horizontal, what is the smallest force F the mover will have to exert to move the box up the ramp?
An ac generator with a frequency of 34.1 Hz and an rms voltage of 12.0 V is connected to a 49.8-µF capacitor. What is the maximum current in this circuit
An ac generator has a frequency of 4.80 kHz and produces a current of 0.0400 A in a series circuit that contains only a 231 resistor, Obtain the voltage of the generator
A camera lens used for taking close-up photographs has a focal length of 23.5 mm. The farthest it can be placed from the film is 33.5 mm. What is the closest object that can be photographed
mileposts mark distance along a highway. a car traveled from milepost 15 to milepost 185. to calculate the average
An electric vehicle starts from rest and accelerates at a rate of 1.8 m/s2 in a straight line until it reaches a speed of 29 m/s. How far does the vehicle move from start to stop
A 51.0-g Super Ball traveling at 27.0 m/s bounces off a brick wall and rebounds at 21.5 m/s. what is the magnitude of the average acceleration of the ball during this time interval
A car moving at 25m/s approaches a stationary whistle that emits a 350Hz sound. The speed of sound in the air is 343m/s, find the frequency of sound heard by the driver of the car
A 3.20 kg hoop 1.60 m in diameter is rolling to the right without slipping on a horizontal floor at a steady 2.40 rad/s, What is the total kinetic energy of the hoop
tennis ball of mass 0.4Kg rebounds from a tennis racquet. What was the force experienced by the tennis racquet during it's time in contact with the ball
A 4.0 kg mess kit sliding on a frictionless surface explodes into two 2.0 kg parts, one moving at 1.0 m/s, What was the original speed of the mess kit
A slab of material has parallel faces. One coincides with the xy-plane while the other is given by z=t. Find the volume and surface densities of bound charge
find the angle counterclockwise relative to the horizontal.
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