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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?
a capacitor is connected to a 240v peak 50hz power supply. if the maximum current is 430ma what is the capacitance?
A 2.65 kg object is moving in a plane, with its x and y coordinates given by x = 2t2 - 3 and y = 2t3 + 6, where x and y are in meters and t is in seconds. Find out the magnitude of the net force acting on this object at t = 2.00 s.
Use this technique to find formula for the intensity of a sound, in terms of sound level and the reference intensity. There will be a quantity involved in the calculations. When you enter your answer, leave off the unit.
A 24 ? resistor is frozen in a 0.50 kg block of ice with its two leads exposed. The resistor is then attached to a 9.0 V battery. how many hours does it take to completely melt the ice
Plane-polarized light passes through two polarizers whose axes are oriented at 37.0 degrees to each other.If the intensity of the original beam is reduced to 14.55 , what was the polarization direction of the original beam, relative to the first pola..
A string is stretched to a length of 19.6 cm and both ends are ?xed. If the density of the string is 0.045 g/cm, and its tension is 1080 N, what is the fundamental frequency
The four heating elements on an electric stove are wired inparallel so that any combination of them can be on at the sametime. When an element is on, it behaves as a6.80 Ω resistor. When all of the heatingelements are on, what is the equivalent re..
Two 27.0 cm focal length converging lenses are placed 16.5 cmapart. An object is placed 35.0 cm in front of one. What is the total magnification
Its market researcher begins by examining the rental markets in the Southeast, the history of apartment buildings, local economies, competitive rents, and ownership all information that was on hand and did not require any new research to locate. T..
a dentists drill starts from rest. after 2.50 s of constant angular acceleration it turns at a rate of 2.1 104 revmin.
If linear momentum is conserved when there is no external force applied, how is angular momentum conserved
question a baseball thrown at a angle of 40.0 degrees above the horizontal at 15.0 ms from the top of a vertical cliff
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