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A block of mass M=100 kg is moving down an incline that makes an angle of 30 degrees relative to the horizontal. The block is initially moving at a speed of 15 m/s. The block moves a distance x=20 m down along the incline before it is brought to rest by friction. How much work is done by friction during this process?
A slingshot fires a pebble from the top of a building at a speed of 20.00 m/s. The building is 28-m tall. Ignoring air resistance, find out the speed with which pebble strikes the ground when the pebble is fired (a) horizontally (b) vertically str..
Relationships between wavelength, frequency and speed.
The rms voltage across a 0.012uF capacitor is 1.4V at a frequency of 58hz. What is the maximum current through the capacitor
A 4.5kg ball with a velocity of 4.0m/s in the+x-direction collides head-on elastically with a stationary 1.8kg ball. What is the speed of the first ball after the collision
The net force acting on an object in the horizontal direction is 25 newtons, Find the angle from the horizontal in which the force is acting
The value of F B. ds along closed path in a magnetic field is given by 6.28 X 10 T.m. What is the total current that passes througn this closed path?
What angle does water surface make with the horizontal
A parachutist with a camera descends in free fall at a speed of 11 m/s. The parachutist releases the camera at an altitude of 100 m. How long does it take the camera to reach the ground
Ikjoo Yoo of the Tampa Bay Lightning has had his slap shot clocked at 102.1 mph (45.64 m/s). How much momentum is lost in the collision
The objective lens in a microscope with a 25.0 cm long tube has a magnification of -50.0 and the eyepiece has a magnification of20.0. What is the focal length of the objective
A 110 kg mail bag hangs by a vertical rope 4.0 m long. A postal worker then displaces the bag to a position 2.0 m sideways from its original position, always keeping the rope taut. As the bag is moved to this position, how much work is completed by t..
A 7.11-kg box is sliding across the horizontal floor of an elevator. find the kinetic frictional force that acts on the box
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