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A horizontal force of 150 Newton is used to push a 40.0 kilogram packing crate a distance of 6.00 meter on a rough horizontal surface. If the crate moves at constant speed,
(a) Calculate the work done be the 150 Newton force and
(b) Calculate the coefficient of kinetic friction between the surface and crate?
The length of a simple pendulum is 0.87 m and the mass of the particle (the "bob") at the end of the cable is 0.21 kg. What is the angular frequency of the motion
A large aquarium of height 4.19 m is filled with fresh water to adepth of D = 1.60 m. By how much does the total force on that wall increase if the aquarium isnext filled to a depth of D = 4.20 m
A glass window pane is exactly 20 cm by 36 cm at 10oC. By how much has its area increased as it temperature is 33oC, assuming that it can expand freely? Take the coefficient of thermal expansion for the glass to be exactly 9 x 10-6/Co.
A 54.0-kg woman stands at the western rim of a horizontal turntable having a moment of inertia of 520 kg · m2 and a radius of 2.00 m. Is the mechanical energy of the system constant
A small 0.500-kg object moves on a frictionless horizontal table in a circular path of radius 1.00 m. what is the radius of the smallest possible circle on which the object can move
When high-energy charged particles move through a transparent medium with a speed greater than the speed of light in that medium, Calculate the speed of the electrons in the water. The speed of light in water is 2.25 108 m/s
A 15m uniform ladder weighing 500 N rests against a frictionless wall. The ladder makes 60 angles with the horizontal.
an asteroid fragment wandering through space is often referred to as a meteoroid. when entering earths atmosphere some
In a television, electrons travel from the cathode to hit thescreen, illuminating it. By applying magnetic fields, the beam canbe deflected away from the central axis to hit the desired spot.There are 6.0x10^20 electrons arriving at the screen per..
A solid homogeneous sphere of mass M = 3.20 kg is released from rest at the top of an incline of height H=1.57 m, Determine the rotational kinetic energy of the sphere at the bottom of the incline
A freezer is used to maintain food at an inside temperature of exactly -5.5oC. If the outside temperature of the freezer door is 22oC, find what is the rate of heat loss per minute
a car travels around a curve at a constant speed of 83.0 kmh. what is the cars instantaneous velocity at an instant
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