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The Moon is in orbit around the Earth. Is the moon pulled by the Earth's gravity; or, is the Earth pulled by the Moon's gravity; or, both. Explain.
A 75 kg man just before contact with the ground has a speed of 6.4 m/s.
Consider a monatomic ideal gas that lives at a height z above sea level, so each molecule has potential energy mgz in addition to its kinetic energy.
A ball dropped to the floor rises to a height less than its original height. Discuss some of the energyconversions that take place in a system like this.
Waves - What is the value of g, the acceleration due to gravity, on Planet X?
Young David who slew Goliath experimented with slings before tackling the giant. He found that with a sling of length .598 m, he could develop a rotation
A photon moves at an angle ? with respect to the x†.' axis in frame S'† Frame S'† moves at speed v with respect to frame S (along the x'†axis).
Someone moves to the top of the World Trade Center in New York and moves back to the ground floor after one year according to a clock located
Converging lens with a focal length of 3.1 cm is used to image an object which is 3.4 cm away from the lens. How far from the lens is the image?
You drop a stone from a position of rest. How far will it fall vertically in the ?rst 5 s?The acceleration of gravity is 9.8 m/s.
A Ferris wheel rotates at an angular velocity of 0.22 rad/s. Starting from rest, it reaches its operating speed with an average angular acceleration
A particle P of mass m is fastened to the end of a string with length L. The particle starts from rest, in a position where the string is taut
The Cross section of the wire is 9.07 x 10 -8 m2 length = 0.877 m
Tube B (full of air) is sealed on the top and a 16" OD opening on the bottom. B is 104.6' long.
Consider an ideal pendulum consisting of a "bob" of mass m hanging from a light (massless) string of length L.
The following formula represents the period of a pendulum,T. T = 2p(l/g)
Will it be possible in the future to travel to other stars
Imagine a 560 kg satellite in a circular orbit around the earth with a period of 4.8 hours.
What are the units of specific gravity? Assuming that the density of water is 0.997 g.mL^-1 and the specific gravity of gold is 19.28
You are standing on a balcony 30 feet off the ground. You want to throw your key to someone on the ground. You throw it angled upward with initial velocity
The thickness h of a puddle of water on a waxy surface depends on the density ? of the liquid, the surface tension ? (SI units: N/m)
Suppose you are in a barrel going over Niagara Falls and during the fall you drop an apple inside the barrel. Would the apple appear to move toward the top
A spring with k = 40.0 N/m is at the base of a frictionless 30.0° inclined plane. A 0.50-kg object is pressed against the spring
Analyze the Mark Mahin argument for the existence of God based on the flatness problem. From the big bang to actual and critical density of the universe.
Suppose predictions of cosmologists come true and the universe will one day collapse into a primordial atom - perhaps as a precursor to another 'big bang'