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A steel ball is dropped onto a hard floor from a height of 1.25 m and rebounds to a height of 1.16 m. (Assume that the positive direction is upward.)
(a) Calculate its velocity just before it strikes the floor.
(b) Calculate its velocity just after it leaves the floor on its way back up.
(c) Calculate its acceleration during contact with the floor if that contact lasts 0.0800 ms
(d) How much did the ball compress during its collision with the floor, assuming the floor is absolutely rigid?
A rotating wheel requires2.90s to rotate through 37.0 revolutions. What is the constant angular acceleration of the wheel
how much work is required to place q3 at (0,-3)? D) Calculate the electric potential energy of the group of three charges.
a stone is projected at a cliff of height h with an initial speed of 44.0 m/s directed at an angle ?0 = 51.0° above the horizontal. find the speed of the stone just before impact
An electron is at the origin. (a) Calculate the electric potential VA at point A, x = 0.310 cm. V (b) Calculate the electric potential VB at point B, x = 0.770 cm. V What is the potential difference VB - VA
A bicycle with 0.80m -diameter tires is coasting on a level road at 5.6m/s. A small blue dot has been painted on the tread of the rear tire. What is the angular speed of the tires
A particle of charge 4.96 is placed at the origin of an xy-coordinate system, and a second particle of charge -1.99 is placed on the positive x-axis at = 3.97. Find the direction of the total force acting on the third charge
A house has a floor area of 120 m2 and an outside wall that has an area of 27 m2. determine the magnetic flux that passes through the floor
Three astronauts, propelled by jet backpacks, push and guide a 115 kg asteroid toward the processing dock, exerting the forces, with F1 = 34 N, F2 = 57 N, F3 = 41 N, θ1 = 30°, and θ3 = 60°
Two masses, m1 = 2.10 kg and m2 = 9.51 kg are on a horizontal frictionless surface and they are connected together with a rope. What is the acceleration of the whole system
A mass (10 kg) rests on a surface (ustatic=.6) connected by a cord to a hanging mass of 2 kg. What is the acceleration of the heavier mass
Five cubic feet of a gas at 90 pisg and 75 degree F are compressed to a volume of 2 cubic feet and the heated to a temperature of 250 degree F illustarte what is the new pressure? (General Ideal Gas Law)
The sound intensity in front of a loudspeaker diaphragm vibrating at 2kHz is 4.3 W/m^2, with an acoustic power output of 0.3W. Calculate the diameter of the diaphragm. in cm
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