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The coefficient of kinetic friction for a 21 -kg bobsled on a track is 0.10. What force is required to push it down a 6.0 incline and achieve a speed of 61 km/hat the end of 75 m?
To appreciate the strength of gravity, calculate the number of steel cables that would be required in the absence of gravity to hold the moon in orbit about the earth.
erson decides to use an old pair of eyeglasses to make someoptical instruments. What is the maximum angular magnification he can produce in a telescope
In a Compton scattering experiment, the scattered electron is observed to move in the same direction, what is the scattering angle of the photon
A car with an initial speed of 10.7 m/s accelerates at a uniform rate of 0.92 m/s squared for 3.6 s. find the final speed and displacement of the car
A car moves in a circle with constant speed. The tires do not slip on the road. What is the direction of the friction force on the tires by the road
The flywheel of an engine has a moment of inertia 2.40- {rm kg} cdot {rm m}^{2} about its rotation axis. What is its final kinetic energy.
q1. what is the dissimilarity in the blood alcohol level between a full and empty stomach after you drank 3 malted
a 40g clay ball going southeast at a 45 degree angle at 4m/s collides with a 30g clay ball moving to the west at 3.0 m/s. find the speed and direction of the resulting blob of clay
A 720 gram grinding wheel 30.0cm in diameter is in the shape of a uniform solid disk. What torque does friction exert while this wheel is slowing down
What is the direction of the electric field at point P and determine the linear charge density. Put your answer in terms of q, L, a, and physical constants.
A gasoline engine absorbs 2,600 J of heat and performs 1,000 J of mechanical work in each cycle. Find the total of heat expelled in each cycle.
a car heading north collides at an intersection with a truck heading east. if they lock together and travel 28 m.s at 46 degrees north of east just after the collision, how fast was the car initially traveling
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