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On a hot day, the temperature of an 81099-L swimming pool increases by 4 degrees celcius. What is the net heat transfer during this heating? Ignore any complications, such as loss of water by evaporation.
From what height will you have to drop the rock on Earth so that the fall-time on both planets is the same.
What least heat is needed to bring 80 of water at 20 to the boiling point and completely boil it away? (answere in Joules).
An athlete executing a long jump leaves the ground at a 34.8 degrees angle and travels 7.86m. how much longer would the jump be
If his arms are capable of exerting a force of 1400 on the vine, what is the maximum speed he can tolerate at the lowest point of his swing? His mass is 82, and the vine is 6.00 long.
In an attempt to reduce the extraordinarily long travel times for voyaging to distant stars, some people have suggested traveling at close to the speed of light. How fast must the rocket travel relative to earth
Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed, Determine the magnitude of the electron's centripetal acceleration
A motorboat is pointed due south, and its motor gives the boat a constant speed of 5.00 m/s through still water. Find the magnitude and direction of the boat's total velocity
Determine magnitude of the force
A uniform electric field of magnitude 256 V/m is directed in the negative y direction. Through what potential difference did the charge move
A 750 air-track glider attached to a spring with spring constant 10.5 is sitting at rest on a frictionless air track. What is the amplitude of the subsequent oscillations
A jet lands at 54.4 m/s, the pilot applying the brakes 2.45 s after landing. Find the acceleration needed to stop the jet within 5.17 x 10^2 m after touchdown.
Suppose the image of an object is upright and magnified 1.69 times when the object is placed 14cm from a lens
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