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It is proposed that future space stations create an artificial gravity by rotating. Assume a space station is constructed as a 3000 meter diameter cylinder that rotates about its axis. The inside surface is the deck of the space station. Find what rotation period will provide gravity?
Rhea, one of Saturn's moons, has a radius of 765 km and an acceleration due to gravity of 0.278 m/s2 at its surface. Calculate its mass and average density.
A thin film of oil is placed on a piece of glass. The oil has an index of refraction of 1.29 and the glass has an index of refraction of 1.56. how thick is the film
Four charges have the same magnitude of 2.4 X 10^-12 C and are fixed to the corners of a square that jus 4.0 cm on a side. Determine the magnitude of the net electric field
Tension is maintained in a string as in the figure below. The observed wave speed is 22 m/s when the suspended mass is 3.0 kg. What is the mass per unit length of the string?
Explain the concepts behind the gravitational constant, gc. Define the constant mathematically.
Two carts on a frictionless air track are made to travel toward each other. As they collide they stick together. if the cart on the left has a mass of 250 grams and is moving at 0.2 meters per second to the right.
each second 1450 m3 of water passes over a waterfall 130 m high. three-fourths of the kinetic energy gained by the
a variable force f(x) =8x^3 -2x acts on a 2.4 kg objects movinf it from x=0.2 to x=1.4 m. what was the work done on the object
A block is hung by a string from the inside roof of a car. Then the string makes an angle with the vertical. Find what the angle
A object is moving along a straight line and the uncertainty in its position is 0.7 m. Discover the minimum uncertainty in the momentum of the object. Discover the minimum uncertainty in the object's velocity, assuming that the object is a golf ball ..
A fish swimming in a horizontal plane has velocity (4.00i + 1.00j) m/s at a point in the ocean where the position relative to a certain rock is r (initial)=(10.0i - 4.00j)m. After the fish swims for 20.0 s, its velocity is v=(20.0i - 5.00j) m/s.
In reaching her destination, a backpacker walks with anaverage velocity of 1.01 m/s, due west. How far east did she walk
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