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Problem: A car is stopped in a distance D by a constant friction force that is independent of the car's speed. What is the stopping distance (in terms of D) If.
A water tank is full to a depth of 10 m and the tank is 20 m above ground. The water pressure at ground in a hose 2cm in diameter is..?
You push your physics book 1.60 along a horizontal tabletop with a horizontal push of 2.80 while the opposing force of friction is 0.550. What is the net work done on the book
A 1.85 kg mass is attached to a light cord that is wrapped around a pulley of radius 2.55 cm, Find the moment of inertia of the pulley
A person has an exposed body area of 1.2 m2 and a body temperature of 37 oC. What is his heat loss by radiation if the surrounding walls are at a temperature of 22.5 oC? (Round answer to two significant figures)
At one instant a bicyclist is 49m due east of a park's flagpole, going due south with a speed of 14 m/s. Then 40s later, the cyclist is 49m due north of the flagpole, going due east with a speed of 14m/s. For the cyclist in this 40s interval, what..
A heat engine using a diatomic ideal gas goes through the following closed cycle: Isothermal compression until the volume is halved. What is the thermal efficiency of this heat engine
A 5.0 m-long rope hangs vertically from a tree right at the edge of a ravine. A woman wants to utilize the rope to swing to the other side of the ravine. She runs as fast as she can, grabs the rope, and swings out over the ravine. When she is directl..
How long will it take to transfer 1,500,000 J of heat through a 1.0 m^2 pane of 0.20 cm thick glass (k=0.8372 J/sm°C) if the temperature differential is 10°C
Andrea thinks she's sitting at rest in her 5.0-m-long dorm room as she does her physics homework. what range is her velocity
To save on heating costs, the owner of a greenhouse keeps 580 kg of water around in barrels. What is the minimum ampere rating of an electric heating system
An open-ended organ pipe has a length of 0.5 m. If the speed of sound in air is 345 m/s, find (a) the pipe's fundamental frequency and wavelength, (b) the frequency and wavelength of its third overtone, and (c) the frequency and wavelength of its thi..
An ambulance traveling at 47 m/s approaches a car heading in the same direction at a speed of 31 m/s. At what frequency does the driver of the car hear the siren
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