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A 6 kg object sits on a horizontal surface with coefficient of friction = .8. What is the minimum force (not necessarily horizontal) necessary to make the object slide?
how long would it take a car to return to its starting place if it traveled 180 ms average speed of 90 kmhr and
A spaceship is launched from the surface of the earth at aninitial speed of 2.00x104m/s. What is the space ships speed
A pickup truck has a width of 78.3 in. what magnitude emf is induced between the driver and passenger sides of the truck
Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 2.2 cm in diameter, calculate the potential difference between its feet
A 1.40 kg block is attached to a spring with spring constant 13 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 42 cm/s.
A Metra train is moving at a speed of 25.0 m/s. As it approaches astation its horn emits a sound of frequency 750. Hz. Calculate the frequency detected by a personstanding still at the station.
Find the momentum, kinetic energy, and total energy of an electron moving at a speed of c / ε The rest energy of an electron is 0.51099893 MeV/c^2
Find the drift velocity of conduction electrons in a gold wire of diameter 2.36 mm when a current of 0.375 A flows in it. The density of conduction electrons in gold is 5.90x10^28m^-3
An initially stationary 2.0 kg object accelerates horizontally and uniformly to a speed of 20 m/s in 1.9 s. (a) In that 1.9 s interval, how much work is completed on the object by the force accelerating it.
Rod ABD is guided by wheels at A and B that roll in horizontal and vertical tracks. Knowing that at the instant shown n ß =60° and the velocity of wheel B is 800 mm/s downward, determine
Calculate the period of a simple pendulum of mass M=0.37 kg attached to a string of length= 1.16 m. The pendulum is on the surface of the planet and oscillates with a maximum angle of 1.6*10^-1 radians.
a skydiver deploys his parachute when he is 1020 directly above his desired landing spot. he then falls through the air
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