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At the local swimming hole, a favorite trick is to run horizontally off a cliff that is 8.9 meter above the water. One diver runs off the edge of the cliff, tucks into a "ball," and rotates on the way down with an average angular speed of1.4 rev/s. Neglect air resistance. Calculate the number of revolutions she makes while on the way down. rev
Consider a three dimensional rectangular infinite potential well with sides of length L, 2L and 3L. What is the energy of the first excited state relative to the energy of the ground state
A block of material has a mass of 80 kg and a volume of 4.1 10-2 m3. How much heat must be added to the block in order to increase its volume by 1.0 10-5 m3
standing on the sidewalk next to your parked car you hear thesiren of an approaching fire engine. what is the velocity of sound in air
A student drops two metallic objects into a 120 gram steel container holding 150 gram of water at 25°C. Compute what is the mass of the aluminum chunk
A charge of -1.0 µC is located at the origin, a second charge of 2.6 µC is located at x = 0, y = 0.1 m, Find the forces that act on each of the three charges
a flashlight beam is emitted 7.53 cm beneath the still surface of the ocean by a scuba diver and strikes the surface
a 75 g bungee cord has an equilibrium length of 1.2 m. the cord is stretched to a length of 1.8 m then vibrated at 20
Find out the depth of the kerosene
The radius of a black hole is the distance from the black hole's center at which the escape speed is the speed of light. What is the radius of a black hole with a mass five times that of the Sun
A 146 gram baseball is hit toward the left by a bat. The magnitude of the force the bat exerts on the ball as a function of time is shown in the figure below (Figure 1) .
If a force of 300N is exerted upon a 60 kg mass for 3 seconds, how much impulse does the mass experience
Assuming an electron free Earth. Find the force on a single proton just above Earths surface under these conditions. Compare your answer with the weight of the proton.
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