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On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a 7 iron. The acceleration due to gravity on the moon is 1/6 of its value on earth. Suppose he hits the ball with a speed of 21.1 m/s at an angle 31° above the horizontal.
How much farther did the ball travel on the moon than it would have on earth?
For how much more time was the ball in flight?
An iron rod has a length of 0.5 m and a cross-sectional area of 6.20 10-4 m2. One end of the rod is in contact with boiling water, what is the mass of ice per second that melts
A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 79.2 m/s at ground level. How long is the rocket in motion above the ground
Infrared photons cause a particular piece of metal to emit photoelectrons. Would photoelectrons be emitted when the metal is illuminated by visible light?
sound produced at a point is heard by a person after 5 second while the same sound is heard by another person after 6
A baseball is hit at an angle of 60° above the horizontal with a speed of 40 m/s. There is a 15 m high fence located at 120 m from the batter. How high is the ball at its highest point
If a giant molecular cloud has a diameter of 30 pc anddrifts relative to neighboing clouds at 20km/s, how long will it take to travel its own diameter
a thin rod has a length of 0.694 m and rotates in a circle on a frictionless tabletop. the axis is perpendicular to the
A web page designer creates an animation in which a dot on a computer screen has a position of r? =[ 4.2cm +( 2.3cm/s2 )t2]i^+( 4.5cm/s )tj^
An L-R-C series circuit is constructed using a 175? resistor, a 12.5?F capacitor, and an 8.00-mH inductor, find the potential difference across the ac source
a 100 omega resistor is connected to a 220 v 50 hz ac supply.a what is the rms value of current in the circuit?b what
1)A crate of potatoes of mass 19.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.82 and μk = 0.29. Find the frictional force (magnitude and direction) on the crate if the crate is sliding d..
One afternoon, a couple walks five-sixthsof the way around a circular lake, the radius of which is1.70km. What are the magnitude and direction (relative to due east) ofthe couple's displacement
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