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A rectangular prism of plastic (ρ=600kg/m3)measuring 2cm x 2cm x 4cm is dropped into a bucket of gasoline(ρ+700 kg/m3). How much downward force, measured inN, would be required to push the plastic prism below the surface ofthe fluid?
A handball of mass 0.10 kg, traveling horizontally at 25 m/s, strikes a wall and rebounds at 19m/s. What is the change in the momentum of the ball.
A 50 newton horizontal force pushes a 10 kg mass sitting on a horizontal surface. What is the acceleration of the mass
An electric dipole consists of charges +2e and -2e separated by 0.78nm. It is in an electric field of strength 3.4 x 106 N/C. Calculate the magnitude of the torque on the dipole
A particle moves along the x axis according to the equation x = 50t + 10t2, where x is in meters and t is in seconds. (a) Calculate the average velocity of the particle during the first 3.0 s of its motion. ? m/s (b) Calculate the instantaneous veloc..
A 16.8 kg block is dragged over a rough, horizontal surface by a constant force of 123 N acting at an angle of angle 34.9 above the horizontal. Find the magnitude of the work done by the force of friction
wo people start at the same place and walk around a circular lake in opposite directions. How long will it be before they meet
To maintain constant velocity, the bicyclist is able to return to the lower applied force from Part A but must remain in the larger gear from Part B ( = 4.64 ). What is , the coefficient of rolling resistance on this road surface
A copper cable is designed to carry a current of 340 A with a power loss of 4.80 W/m. What is the required radius of this cable
A sinusoidal electromagnetic wave from a radio station passes perpendicularly through an open window that has area of 0.500m2. How much energy does this wave carry through the window
A discus thrower accelerates a discus from rest to a speed of 24.9 m/s by whirling it through 1.22 rev. Calculate the final angular speed of the discus
An electron moves in the positive x-direction a distance of 2.38 m in 2.95 x10-8 s, bounces off a moving proton, and then moves in the opposite direction a distance of 1.63m in 3.53x 10-8 s.
A thin soap film (n = 1.35) is suspended in air. The spectrum of light reflected from the film is missing two visible wavelengths of 490.8 nm and 589.0 nm, What is the thickness of the soap film
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