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A 1300{\rm kg} car coasts on a horizontal road with a speed of 17{\rm m/s} . After crossing an unpaved, sandy stretch of road 35.0{\rm m} long, its speed decreases to 14{\rm m/s} . Find the magnitude of the average net force on the car in the sandy section.
A 57.4 g sample of a conducting material is all that is available. The resistivity of the material is 1.05 E-7 and the density is 6.09 g/cm^3. What will the diameter of the wire be
What is mechanical energy
Consider a tennis ball cannon people use to practice their game: what is the approximate wavelength of these tennis balls
Assume that the net horizontal force is due to rolling friction only and take free-fall acceleration to be = 9.80 .What is the coefficient of rolling friction for the tire under low pressure.
At one point in a pipeline, the water's speed is 2.95 and the gauge pressure is 3.80×104. Find the gauge pressure at a second point in the line 10.8 lower
The woman then starts walking clockwise around the rim at .75 rad/s. in what direction and with what angular speed does the turntable rotate.
A large tank of water is full and has a depth of 10.0 m. What is the pressure at the bottom of the tank? What would the velocity of the water be
Two very large charged parallel metal plates are 10.0 apart and produce a uniform electric field of 2.80×106 between them. How much work has the electric field done on this proton
A tennis ball is hit with a vertical speed of 30 m/s and a horizontal speed of 25 m/s. How long will the ball remain in the air? How far will it travel horizontally during this time?
A 4.0-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in the afternoon, How deep is the pool
Two train cars are on a straight, horizontal track. One car starts at rest and is put in motion with a constant acceleration of 1.80 m/s2. Where will the cars collide
A 3.1 kg block slides down a frictionless ramp, What is the speed of the block when it leaves the ramp and What is the speed of the block when it hits the ground
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