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A 4.58 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=11.40 N at an angle theta=30.0 degrees above the horizontal. What is the speed of the block 5.50 seconds after it starts moving?
You stand on a frictionless platform that is rotating with an angular speed of 7.2 rev/s. What is the change in kinetic energy of the system
A block of mass m = 5.0 kg is pulled along a rough horizontal surface by a rope as sketched in the figure below. The tension in the rope is 80 N, Find the work done by friction on the block
A box of bananas weighing 45.0 N rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.400, and the coefficient of kinetic friction is 0.200. If no horizontal force is applied to the box and the box..
A piece of wood is 0.700{\rm m} long, 0.210{\rm m} wide, and 8.00×10?2{\rm m} thick. What is the mass of this volume of lead
Starting from rest with an acceleration of 0.37 m/s2, he covers the same distance as the ramp does, but in one-fourth the time. Illustrate what is the speed at which the belt of the ramp is moving?
A 2.0 mm diameter plastic bead is charged to - 1.0nC. A proton is fired at the bead from far away with a speed of 1.0x10^6 m/s, What is the impact speed
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 54.56 diopters, How far is the blackboard from her eyes
a pendulum is made with a 4 kg mass suspended at the end of a 75 cm thin rod. the pendulum is started at an angle 20
Suppose your favorite FM radio station broadcasts at a frequency of 99.9 MHz. What is the wavelenght of this signal
An airplane is flying with a velocity of 93.0 m/s at an angle of 25.0 degrees above the horizontal, How far from the dog will the suitcase land in m
You are pushing a 150-kg wooden crate in a straight line a distance of 4.5 m across a wooden floor. What is the work done by friction on the crate
You wrap a single layer of copper wire (diameter .812mm) around a tube (diameter 4cm length 28cm) to create an air filled solenoid. how many turns are there per centimeter
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