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A major-league pitcher can throw a baseball in excess of 39.3 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches a catcher who is 19.0 m away from the point of release?
You apply a constant net horizontal force of 65.5 N to a crate that rests on a smooth horizontal floor. The frictional force is negligible. What is the mass of the crate
The output voltage of an AC generator is given by ?v = (120 V) sin (50?t). The generator is connected across a 25.0-? resistor. Find the power delivered to the resistor
A hobo is sitting on the tracks at downtown Disney, staring at his reflection in the mirror which is 10 m away. At what position is the hobo's image? What is the radius of curvature of the mirror? What type of mirror is it?
Speedboat A negotiates a curve whose radius is 118 m. Speedboat B negotiates a curve whose radius is 270 m. Each boat experiences the equivalent centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
A coin is thrown vertically down into a well with an initial velocity of 2.5 m/s. What is the velocity of the coin
An open switch, a 6.09 kohm resistor and a 4.15 microfarad capacitor are connected in series across a 17.0V battery. The capacitor starts with no stored charge. Find the time constant. The switch is closed. What is the time until 70 percent of full..
a how is the youngs interference pattern and intensity affected by the width of the slits the separation of the slit
a giant star has a radius of 200 rsun with core mass 0.6 msun surrounded by an extended envelope of mass 0.2 msun.a.
suppose that after walking across a carpeted floor you reach for a doorknob and just before you touch it a spark jumps
The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the listening position increases from 21 to 59 dB. What is the ratio of the final sound intensity to the original sound intensity?
a cyclotron is sometimes used for carbon dating. carbon -14 and carbon -12 ions are obtained from a sample of the
Rays of the Sun are seen to make a 35.6 angle to the vertical beneath the water. At what angle above the horizon is the Sun
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