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A group of college students eager to get to Floride on a spring break drove the 637 mi trip with only minimum stops. They computed their average speed for the trip to be 54.2 mi/h. How many hours did the trip take? =-----h
What radius must a water drop have for the difference between the inside and outside pressure to be 2.08 X 10^-2 atm? The surface tension of water is 72.8 dynes/cm
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. How long is he in the air
At launch the space shuttle has an overall upward acceleration of about 5m/s^2, how far inot the air will it travel, assumin that it travels straight up, what is the velocity of the shuttle after 5 seconds
In each of the four scenarios to the right, a large bat lets out a short burst of ultrasonic sound, which the smaller bat hears a moment later. If the large bat flies at 14.60 m/s and the small bat flies at 4.520 m/s, rank the frequency that the s..
A tennis player receives a shot with the ball (0.060 0 kg) traveling horizontally at 52.5 m/s and returns the shot with the ball traveling horizontally at 38.5 m/s in the opposite direction
Two different elements with half lives Ta and Tb have Na & Nb (undecayed) atoms respectively, Determine the ratio of their activities at this instant
assume you have a perfectly isolated closed system under reversible and isothermal conditions where pv0.8 5000kjm-0.6.
On planet Zog, Mr. Spock measures that it takes 1.47 s for a mass of 0.50 kg to hit the ground when released from rest from a height of 2.85 m. Calculate the size of the acceleration of gravity on that planet
if the torque required to loosen a nut that is holding a flat tire in place on a car has a magnitude of 43.0 nmiddotm
The hydraulic turbines in a water-power plant rotate at 60rpm and are rated at 20, 000 hp. The 30 in-diameter shaft between the turbine and the generator is made of steel (G = 12, 000 ksi) and is 20 ft long. Determine (a) The maximum shearing stress ..
Two workmen are stacking heavy cinder blocks from the ground to a raised pallet. If one of them stacks 100 of the blocks in 20 min and the other stacks 100 of them in 30 min, which one has done more work? Which has the greater power output?
A skier leaves the ramp of a ski jump with a velocity of 30.0 m/s The slope is inclined at 50.0°, Find the distance from the ramp to where the jumper lands
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