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The average density of the material in intergalactic space is approximately 2.5 x 10-27 kg/m3. Determine the volume of a gold sample, ρ = 19,300kg/m3, that has the similar mass as 8.0 x 1024 m3 of intergalactic space?
A 29.0 kg child on a 1.00 m long swing is released from rest when the ropes of the swing make an angle of 31.0° with the vertical. Neglecting friction, find the child's speed at the lowest position.
an iron wire has a cross-sectional area of 1.31 x 10-5m2. carry out steps a through e to compute the drift speed of the
You throw a baseball straight upward. If air resistance is notneglected, how does the time required for the ball to go from theheight at which it was thrown to its maximum height back down tothe height from which it was thrown? Explain your answer..
What force is exerted by the water on the window of an underwater vehicle at this depth if the window is circular and has a diameter of 35.7 cm
Ice of mass 45.5 g at -10.9° C is added to 212 g of water at 15.8° C in a 101 g glass container of specific heat 0.200 cal/g-°C at an initial temperature of 22.7° C
a hot air balloon rises from the ground with a velocity of 2.0 msyhat. a champagne bottle is opened to celebrate
A penny of mass 3.10 g rests on a small 20.0-g block supported by a spinning disk
An incompressible fluid is flowing through a pipe with a constriction. The pipe is on an incline with an angle of 30.0 degrees. What is the pressure in the narrow section of the pipe
Now suppose that the two masses continue to move at the speed from Part A until they encounter a rough surface. The coefficient of friction between the masses and the surface is . If the blocks come to rest after a distance, which of following equ..
Two point charges, +5.0 µC and ?3.0 µC, are separated by 4.0 m. What is the electric potential energy?
During a particular thunderstorm, the electric potentialdifference between a cloud and the ground is Vcloud -Vground = 1.3 x 108 V, What is the change in an electron's potential energy
q1. a curve of radius 40 m is banked for a design speed of 100 kmh. if the coefficient of static friction is 0.30 wet
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