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At one instant, a 19.0-kg sled is moving over a horizontal surface of snow at 5.00 m/s. After 6.05 s has elapsed, the sled stops. Use a momentum approach to find the magnitude of the average friction force acting on the sled while it was moving.
A projectile is fired at 60.0 o above the horizontal. Its initial speed is equal to 150.0 m/s. Like most problems in this class (2010), ignore the effects of air unless told otherwise
The calorimeter is constructed of a material that has a specific heat of 0.10 cal/ g. ^{circ}C. When equilibrium is reached, what will be the final temperature.
A bucket of mass 1.50 is whirled in a vertical circle of radius 1.20. At the lowest point of its motion the tension in the rope supporting the bucket is 25.00 N. Find out the speed of the bucket. How fast must the bucket move at the top of the circle..
Refrigerant-134a enters a compressor at 180 kPa as a saturated vapour with a flow rate of 0.35 m3/min and leaves at 700 kPa. The power supplied to the refrigerant during compression process is 2.35 kW. What is the temperature R-134a at the exit of th..
Four identical masses of mass 600 mg each are placed at the corners of a square whose side lengths are 15.0cm.What is the magnitude of the net gravitational force on one of the masses, because of the other three.
Nancy pulls box with 6 N force northward; Edward pulls with 4N force eastwood and Sally pulls with 5N force 36.9 degrees south of west
A 0.10g honeybee acquires a charge of 25pCwhile flying, What is the ratio of the electric force on the bee to the bee's weight
A 28.0 {rm kg} child plays on a swing having support ropes that are 2.20 {rm m} long. A friend pulls her back until the ropes are 45.0^circ from the vertical and releases her from rest.
A car moving at 37 m/s approaches a stationary whistle that emits 270 Hz sound. The speed of sound is 347 m/s. What is the frequency of sound heard by the driver of the car.
The tungsten filament of a certain 100 W light bulb radiates 4.00 W of light. Find the filament's temperature
A vessel whose walls are thermally insulated contains 2.5 {rm kg} of water and 0.6 {rm kg} of ice, all at a temperature of 0.0 ^circ {rm{C}}. The outlet of a tube leading from a boiler in which water is boiling at atmospheric pressure is inserted ..
Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and separated from it. Lastly, sphere C is touched to sphere B and separated from it. Explain how much charge ends up on sphere C?
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