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Two frisky grasshoppers collide in mad air at the top of their respective trajectories and grab on to each other, holding tight there-after. One is a robust 250 gram beast initially moving at south at 20.0 cm/s, while the other is a svelte 150 gram initially moving north at 60.0 cm/s. Find the decrease in kinetic energy that results from the (inelastic) collision. Define what happens to the lost kinetic energy?
A 4.1-kg block slides down an inclined plane that makes an angle of 29° with the horizontal. Find the coefficient of kinetic friction between the block and plane
A 2600 kg automobile is traveling at 20 m/s when the brakes are applied. The braking force is 10192 N. Use work-energy methods for this problem. Determine the initial kinetic energy of the automobile
An alternating emf source with a variable frequency fd is connected in series with a 50.0 ? resistor and a 20.3 ?F capacitor. find the angular speed at which the phasors rotate
two trains are traveling toward each other in still air at 26.0 ms relative to the ground. one train is blowing a
A man pushes a lawn mower on a level lawn with a force of 208N. If 42% of this force is directed downward, and 54 W of power is expended in pushing the mower 4.7 m, how much time is spent in pushing the mower this distance?
A firehouse shoots water at a speed of 50 m/s from a ground level at an angle of 60 above the horizontal. how far above the ground does it hit the building
In a house the temperature at the surface of a window is 16°C. The temperature outside at the window surface is 9°C. Heat is lost through the window via conduction, and the heat lost per second has a certain value.
Determine the resulting specific gravity when the three liquids in the containers A, B and C are mixed together.
A carpenter tosses a shingle horizontally off an 8.8m--high roof at 8.0m/s , How far does it move horizontally
A parallel-plate air capacitor has a capacitance of 400pF and a charge of magnitude 0.150\muC on each plate. What is the surface charge density on each plate
julie carries an 8.0 kg suitcase as she walks 18 m along a horizontal walkway to her hotel room at constant speed of
the rms speed of the molecules in 1.0g of hydrogen gas is 1600ms.a what is the total translational kinetic energy of
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