Sunday
May 19, 2013

# Posts by Sierra

Total # Posts: 178

Physics
Nothing

physics
You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 273 N for 7.2 s, during which time the refrigerator moves a distance of 3.4 m at constant velocity.

Physics
A rock of mass 0.086 kg is thrown upward with an initial speed of 13 m/s. Find the work done by gravity on the rock from the time it leaves the thrower's hand until it reaches the highest point on its trajectory. Hint: You do not have to calculate the rock's maximum he...

Physics
A car of mass 1,700 kg is initially traveling at a speed of 25 m/s. The driver then accelerates to a speed of 35 m/s over a distance of 500 m. Calculate the change in the kinetic energy of the car.

Physics
A car of mass 1,700 kg is initially traveling at a speed of 25 m/s. The driver then accelerates to a speed of 35 m/s over a distance of 500 m. Calculate the change in the kinetic energy of the car.

Physics
A block of mass is pulled along a rough horizontal surface by a rope as sketched in the figure below. The tension in the rope is 45 N, and the coefficient of kinetic friction between the block and the surface is

Physics
A crate of mass 29 kg is pushed up a ramp by a person as shown in the figure below. The person pushes the crate a distance of 25 m as measured along the ramp. Assume the crate moves at constant velocity. Assume the coefficient of kinetic friction between the crate and the ramp...

Physics
A crate of mass 59 kg is pushed across a level floor by a person. If the person exerts a force of 30 N in the horizontal direction and moves the crate a distance of 12 m, what is the work done by the person?

English
i can not seem to find who the Fictional Character Justice Johnson is, i dont even see it anywhere in my book?

Physics
A sphere of mass 85 kg is attached to one end of a rope as shown in the figure below. It is found that the rope does an amount of work W = 8030 J in pulling the sphere upward through a distance 9.6 m. Find the tension in the rope.

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