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Question: A cubic foot of water has a mass of 62.4 pounds. What is the ratio of the mass of a cubic foot of iron to the mass of a cubic foot of water? Hint: Reread the last sentence of the preceding paragraph.
According to Coulomb's law, how much does the force among two charged points increase or decrease if the distance among them increases two times?
Consider a planet of radius 5.78 106 m with a rotation period of 21.6 hours. Compute the radial acceleration of a point on the surface of the planet
Light from a laser with a wavelength of 760 nm is directed at a diffraction grating of 1500 lines/cm. Calculate the distance between adjacent bright fringes
A ball is thrown straight up from the ground with an initial velocity of 39.2 m/s; at the same instant, a ball is dropped from the roof of a building 27.7 m high - After how long will the balls be at the same height?
The maximum strain of a steel wire with Young's modulus 2.0 x 10^11 N/m^2, just before breaking, is 0.20%. What is the stress at its breaking point
Suppose you throw a 0.054-kg ball with a speed of 11.6 m/s and at an angle of 28.5° above the horizontal from a building 12.7 m high. What will be its kinetic energy when it hits the ground
When a parachute opens, the air exerts a large drag force on it.This upward force is initially greater than the weight of the skydiver and, thus, slows him down. Suppose the weight of the skydiver is 902 N and the drag force has amagnitude of 1030..
Compare these with the corresponding entropy changes and show the total entropy change is the same for each path
A tank truck takes on a load of 45 725 litters of gasoline in Houston at 32.0°C. The coefficient of volume expansion, \beta, for gasoline is 950 x 10-6(°C)-1. The truck delivers its load in Omaha, where the temperature is -18.0°C.
What should be the mass of object B? The numbers in the figure indicate the relative lengths of the rods on each side of their supporting cords.
Suppose |L| = 10 and r = 2i + 3j + 4k and |p| = 10. What is the angle between the radius and momentum vectors
The first-order principal maximum produced by a grating is located at an angle of ? = 15.0 degrees. What is the angle for the third-order maximum
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