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An aluminum rod is 18.0 cm long at 20°C and has a mass of 350 g. If 15,000 J of energy is added to the rod by heat, what is the change in length of the rod?
A 10 kg runaway grocery cart runs into a spring with spring constant 240N/m and compresses it by 65cm. What was the speed of the cart just before it hit the spring.
A sled weighing 1.0 X 10^2 N is held in place on a frictionless 20.0 degree slope by a rope attached to a stake at the top. The rope is parallel to the slope. What is the normal force of the slope acting on the sled.
After falling from rest from a height of 26 m, a 0.5 kg ball rebounds upward, reaching a height of 16 m. If the contact between ball and ground lasted 1.6 ms, Evaluate average force was exerted on the ball?
When one person shouts at a football game, the sound intensity level at the center of the field is 62.4 dB. When all the people shout together, how many people are at the game
A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.170 .
Important information about Physics - Mechanics A satellite of mass 205 kg is launched from a site on the Earth's Equator into an orbit at 175 km above the surface of Earth.
The hydrogen bomb detonated in 1954 had an explosive power equal to about 15 megatons of TNT, How many times more explosive was the hydrogen bomb
A motor boat haeds due east at 5 m/s acorss a river that flows toward the south at 5 m/s. If the river is 125m wide, how longs does it take the boat to cross the river.
An ideal Voltmeter is connected across the terminals of a 12 Volt battery and a light bulb with R = 4.5 ohms is also connected across the battery terminals, Find the power generated by the Emf of the battery
The potential differences across the capacitors are the same only if the capacitances are the same.
A uniform electric field exists everywhere in the x, y plane. This electric field has a magnitude of 6000 N/C, Find the magnitude of the net electric field at x = -0.18 m
A car takes 11 s to go from v = 0 to v = 80 m/s at about constant acceleration. If you wish to find the distance travelled using the equation d = 1/2 at2, what value must you use for a.
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