What work should the total external force do
A 6500-kg satellite is in a circular earth orbit that has a radius of 3.5 10^7 m. A net external force must act on the satellite to make it change to a circular orbit that has a radius of 8.9 10^6 m. What work must the net external force do?
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By how much does the potential energy of a(n) 16.0-kg child increase when the child climbs a normal staircase to the second floor?
Two cards are drawn from a well-shuffled deck of playing cards from which the spades and clubs have been removed, and are placed face down on a table. The cards are turned up one a time and the suit of each card is observed. Let X1 and X2 be defin
The final volume is 0.045 ft3. The experimental data for the process indicate that PV1.45 = constant. What is the work performed by the expanding gas?
For comparison, a .22 caliber bullet has a mass of 2.6 g and, starting from rest, exits the barrel of a gun with a speed of 412 m/s. Determine the work done to launch the motion of both the hammer and the bullet.
Find the work done if the system is at the initial temperature of 75oF and the pressure between the final state is (a) constant, (b) inversely proportional to volume and (c) given by the ideal gas relationship (PV=mRT).
A 2.10 x 102-N force is pulling an 85.0-kg refrigerator across a horizontal surface. The force acts at an angle of 17.0° above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 5.00 m. (a) Find
Through how many revolutions does the tub turn during this 22 s interval? Assume constant angular acceleration while it is starting and stopping.
Estimate by what percent the average air-water density is greater that that of just still air. State all assumptions and show calculations.
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