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The top of Pike's Peak is 14,100 ft above sea level. Neglecting the variation of T with altitude and using the average surface temperature of 290K and the number average molecular weight of 29 for air, calculate the atmospheric pressure at the top of this mountain. Compare with the observed average value 446 torr. Show all calculations.
A 35.0-kg seal at an amusement park slides down a ramp into the pool below. The top of the ramp is 1.80 m higher than the surface of the water, and the ramp is inclined at an angle of 30.0° above the horizontal. The seal reaches the water with a s..
A 45.5-g golf ball is driven from the tee with an initial speed of 47.3 m/s and rises to a height of 30.4 m. evaluate the kinetic energy of the ball at its highest point
A current of 5 A flows to the right along the x-axis through an infinitely long wire. A loop of wire with radius 25 cm is centered along the y-axis at y=1 meter. Draw the final arrangement of wires
Fred and Barney are two electric charges that are to begin with held 1 meter apart and experience an electric repulsion of 10 pounds of force. What would be the force of repulsion between them be if the two were moved closer together so that they ..
A racecar approaches the start/finish line of a race track with a speed of 100 m/s. A speaker (called the ground speaker) next to the start/finish line emits a tone of frequency 256 Hz (middle C on a piano). A second speaker on the racecar (called..
A block of weight 3.9N is launched up a 30%u2218inclined plane 2.35m long by a spring with k = 2.35 N/m and maximum compression 0.10m. How much kinetic energy does it have there
q1. what would be the equilibrium temperature when a 256 g block of copper at 314 degc is placed in a 140 g aluminium
In February 2004, scientists at Purdue University used a highly sensitive technique to measure the mass of a vaccinia virus (the kind used in smallpox vaccine). What is the mass of the virus in femtograms
An artificial lens is implanted in a person's eye to replace a diseased lens. The distance between the artificial lens and the retina is 2.70 cm, What is the power of the implanted lens
A physics student in a hot air balloon ascends vertically at constant speed. suppose the following four forces that arise in this situation.
A certain digital camera having a lens with focal length 7.5 cm focuses on an object 1.80m tall that is 4.35m fromt he lens. How far must the lens be from the photocells
A merry-go-round is spinning and has a period of 7.25 s. A boy jumps off in a direction parallel to the radius, what is the new period of the merry-go-round
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