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I don't know where to begin on this.Please show baby steps if you can. A small ball is thrown horizontally out of a window 7.50 m above the ground. It lands 6.06 m from the base of the building. With what speed was it thrown?
If the tension in each chain at the lowest point is 408 N, find the child's speed at the lowest point.
The 1800-turn coil in a dc motor has an area per turn of 1.1 multiply.gif 10-2 m2. compute the current in the coil
The 230,000 lb space-shuttle orbiter touches down at about 220 mi/hr. find the corresponding distance (in feet) traveled by the orbiter
A guitar string is tuned to an E4, The concert pitch standard A440 has a frequency of 440 Hz. What is the wavelength of this pitch in air
An airplane flies due south at 190-km/h relative to the air. There is a wind blowing at 73.0 km/h to the east relative to the ground. What are the plane's speed and direction relative to the ground.
A barge floating in fresh water (? = 1000 kg/m3) is shaped like a hollow rectangular prism with base area A = 650 m2, Find the mass of the coal in kilograms
A person exerts a force of 120N on a rope that pulls a sled across a very smooth surface. The rope is oriented 37 degrees above the horizontal. Determine the speed of the sled after moving for 10 m
It has been suggested that rotating cylinders about 10 mi long and 5.0 mi in diameter be placed in space and used as colonies. What angular speed should such a cylinder have so that the centripetal acceleration at its surface equals the free-fall ..
A heat engine has a maximum possible efficiency of 0.800. If it operates between a deep lake with a constant temperature of 287.0 k and a hot reservoir, what is the temperature of the hot reservoir?
An oscillating LC circuit has a current amplitude of 7.50 mA, a potential amplitude of 250 mV, and the capacitance of 220 nF. What are (a) the period of oscillation.
A 1120 kg four door sedan hits a 1420 kg minivan that is at rest. The two cars lock together and skid 12.0 m on a level surface before stopping. what is the frictional force acting on the two cars
Hair dryer draws a current of 9.2a. How long does it take 1.9*10^3 C of charge pass through? How many electrons does this represent.
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