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Consider a waterfall that is 28.3 m high. Suppose that at the top, water feeds into the water fall at an extremely slow speed. What is the maximum increase possible in the temperature of the water (in degrees Celsius) going from the top to the bottom of the waterfall? Assume it absorbs, as thermal energy, all its decrease in gravitational potential energy.
A man's leg can be thought of as a shaft of bone 1.2m long. If the strain is 1.3x 10^-4 when the leg supports his weight, by how much is his leg shortened
stronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.13 Earth years in its circular orbit around its sun, Find the radius of the exoplanet\'s orbit
The potential energy of a +1 10-6 C charge decreases from 0.06 J to 0.02 J when it is moved from point A to point B. What is the change in electric potential between these two points
The speed of a projectile when it reaches its maximum height is 0.38 times its speed when it is at half its maximum height
from the top of a pole 4.8m about the ground, he was able to leave the pole with a speed of 4.82m/s at an angle of 7 degrees from vertical, find th total horizontal distance traveled for the vault
a pot of hot water is boiling on your stove. the pot is in the shape of a round cylinder made of aluminum which is 10
Pretend a person can walk only at a certain pace no faster, no slower. If you time her uninterrupted walk across a room of known length, you can compute her walking speed.
Singly charged uranium-238 ions are accelerated through a potential difference of 2.26 kV and enter a uniform magnetic field of magnitude 1.98 T directed perpendicular to their velocities. Determine the radius of their circular path
A standard 35mm slide measures 24mm by 36mm. Suppose aslide projector produces a 60cm by 90cm image of the slide on a screen. What is the distance between the slide and the screen
a proton and an electron are separated by 3.5 nm, what is the magnitude of the force on the electron and proton
A spring is hung from a ceiling,and an object attached to its lower end stretches the spring by adistance of 5.00 cm from its unstretched position when the systemis in equilibrium. determine the mass of the object
A 2 kg ball is dropped from a height of 1/5 m. It bounces off the floor with a velocity of 1 m/s. What is the impulse (magnitude and direction) applied to the ball during the collision with the floor
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