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A man is pulling a 40.0 kg crate across a level floor with a horizontal force, and the coefficient of kinetic friction is ?k = 0.59 for the crate and the floor.
a) What is the normal force acting on the box?
b) What horizontal force must the man apply to get the crate to accelerate at 2.0 m/s2 ?
c) If he succeeds in maintaining this force and pulls the crate 15 meters, how much work has the man done?
An ideal gas occupies a volume of 3.0 cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container
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Archimedes purportedly used his principle to verify that the king's crown was pure gold by weighing the crown while it was submerged in water.
A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 15 times the speed of sound in air. what is the length of the rod
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A person walks 25.0° north of east for 2.70 km. How far would the person walk due north and due east to arrive at the similar location.
You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 273 N for 7.2 s, What is the work done by friction
A potter's wheel having a radius 0.49 m and a moment of inertia of 12.6 kg · m2 is rotating freely at 48 rev/min. Find the effective coefficient of kinetic friction between the wheel and the wet rag
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two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 448 N and F2 = 350 N. What is the resultant of these two forces
Find the self-inductance of a solenoid 44cm long and 6.0cm in diameter that contains 2000 turns of wire
If the magnetic field in a traveling EM wave has a peak magnitude of 13.3nT, what is the peak magnitude of the electric field
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