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You have just moved into a new apartment and are trying to arrange your bedroom. You would like to move your dresser of weight 3,500 \rm N across the carpet to a spot 5 \rm m away on the opposite wall. Hoping to just slide your dresser easily across the floor, you do not empty your clothes out of the drawers before trying to move it. You push with all your might but cannot move the dresser before becoming completely exhausted. How much work do you do on the dresser?
If the string is 9.5 long, has a mass of 30 and is pulled taut with a tension of 8.50, how much time does it take for a wave to travel from one end of string to the other?
Block A weighs 19.9 lb and is moving toward the left with a velocity of 4 ft/s just before it is struck by the bullet B from a caliber 50 machine gun. The coefficient of kinetic friction between A and the plane is 0.25. The bullet weighs 0.10 lb a..
A 5.0 kg bundle starts up a 30° incline with 128 J of kinetic energy. How far will it slide up the plane if the coefficient of friction is 0.40
A 1.50-m-diameter MRI solenoid with a length of 2.20m has a magnetic field of 1.60T along its axis. find the emf in one turn of the solenoid's windings
A car starts from rest with an acceleration of 3 m/s/s. How far will the car travel in 6s? What is the velocity of the car after 6s
A frictionless spring of spring constant 500 N/m has one end attached to a verticalwall and the other end to a block of mass 2.0 kg, Find the amplitude and frequency of oscillation
A girl pulls her brother along on a wagon. She pulls with a force of 35 N in a direction of 29.2 degrees to the horizontal, How much work is done be the girl
An imaginary accelerator consists of colliding beams of electrons and protons, each of 2TeV total energy. What laboratory energy would be required to achieve the same center - of - mass energy if electrons collide with stationary protons?
A engineer designs a heat engine using flat-plate solar collectors. What is the maximum possible efficiency of this engine
an icy planet at some mass M and radius R is spinning at some velocity W the ice melts into space at the constant rate of K (masses/sec), at what rate is the velocity changing
question1sam whos mass is 70 kg takes off across level snow in his jet powered skis. the skis have a thrust of 204 n
A boy stands at the peak of a hill which slopes downward uniformly at angle φ. At what angle θ from the horizontal should he throw a rock so that it has the greatest range?
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