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Two balls 14 cm in diameter are placed 200 m apart on a frictionless horizontal plane at 50º N (on the rotating Earth). If the balls are suddenly propelled directly at each other with equal (constant) speeds, at what speed must they travel so that they just miss each other? Provide a sketch of the situation and explain why the balls miss each other.
solenoid is formed by winding 23.0 m of insulated silver (resistivity 1.59 x 10-8 Ω·m) wire around a hollow cylinder. The turns are wound as closely as possible without overlapping, and insulating coat on the wire is negligibly thin.
A block of wood weighs 50.0 N whenweighed in air. A sinker is attached to the block, and the weightof the wood-sinker combination is 220N when the sinker alone is immersed in water. Find the density of the block
Nitromethane CH3NO2) burns in air to produce significant amounts of heat. How much heat is produced by the complete rection of 6.66kg of Nitromethane
Two lightweight rods d = 30 cm are mounted perpendicular to an axle and at 180° to each other. What is the component of the total angular momentum along the axle
A diver springs upward from a boardthat is three meters above the water. Determine her initial velocity, both magnitude and direction
The mass of a certain planet is 3.00 multiply.gif 1026 kg. What is the mean orbital radius of this second moon
In this problem you will model helium-3 as a non-interacting Fermi gas. Although 3He liquefies at low temperatures, the liquid has an unusually low density and behaves in many ways like a gas because the forces between the atoms are so weak. Heliu..
An astronaut on a distant planet wants to determine its acceleration due to gravity. What is the acceleration (magnitude and direction) due to gravity on this planet
25g of copper pellets are removed from a 300 degrees C oven and immediately dropped into 90 mL of water at 25 degress C in an insulated cup. What will the new water temp be
q1. light of wavelength 443 nm in air enters a fishbowl filled with water and then exits through the crown-glass wall
A parallel-plate capacitor has a capacitance of 10 mF and charged with a 20 V power supply. The power supply is then removed and a dielectric of dielectric constant 4 is used to fill the space between the plates. The energy now stored by the capac..
A ray of light is incident from the air onto the surface of a diamond (n=2.42) at a 30 degree angle to the normal, calculate the speed of light in the diamond
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