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You are pulling your sister on a sled to the top of a 15 meter high, frictionless hill with a 10 degree incline. Your sister and the sled have a total mass of 50 kilogram. You pull the sled, starting from rest, with a constant force of 127 Newton at an angle of 45.0Â degree to the hill. If you pull from the bottom to the top, obtain the speed of the sled be when you reach the top?
A mass M = 25.0 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, what is the acceleration a of the van
A 0.230-kg block along a horizontal track has a speed of 1.50 m/s immediately before colliding with a light spring of force constant 48.2 N/m located at the end of the track. What is the spring's maximum compression
How much thermal power is radiated by a light bulb when its filament is heated to 2000°C? Assume that the filament is a blackbody of area 1.0 cm2
a rifle with a weight of 30 n fires a 5.0g bullet with a speed of 300ms. if a 700 n man holds the rifle firmly against
A uniform 200 Newton board length L has two weights hanging from it. 300 N at l/3 from one end, and 400 N 3L/4 from the same end. Find what single additional force acting on the board
a explain the important difference between classical and quantum particles. discuss the requirements that determine
In a church choir loft, two parallel walls are 5.70 m apart. The singers stand against the north wall. What width of the north wall can she see
a spelunker enters a cave. consider the entrance to the cave the origin. the spelunker then moves east for 100 ft then
A charge of +2.00 x 10^-9 C is placed at x = 0.0 m. A second charge of +4.00 x 10^-9 C is placed at x = 1.5 m.
Describe using the Lorentz force equation why a charged particle moving at a constant speed in a direction perpendicular to a uniform magnetic field moves in a circle.
an object undergoes uniformly accelerated motion from point x1 4 m at time t1 2 s to point x2 40 m at time t2 7 s.a
two workers hold a heavy pail. its mass is unknown. one worker exerts a 220n force at 137 degrees from vertical. the
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