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A box of 20 kg is pushed up a 15 degree frictionless incline plane at a uniform speed. The applied force on the box is directed at a 20 degree angle from the horizontal.
1. Draw a force diagram for the box
2. Write net force equations for the x and y directions
3. How would you calculate the work done with the applied force if it was moved 10 m up the plane?
Radar is used to determine distances to various objects by measuring the round-trip time for an echo from the object. How far away is the planet Venus if the echo time is 1500 s
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Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.30*1011 m apart. The largerof the two stars has a mass of 3.40*1030 kg, and its centeris 2.50*1011 m from the system'scenter of mass.
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A ball is thrown vertically upward with a speed of 11.0 m/s. How long does it take to reach its highest point
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a bullet is fired from a gun whose barrel is 0.600 m long. the bullets mass is 5.00 g and its velocity is 300ms when
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sometimes a person cannot clearly see objects close up or far away. to correct this type of vision bifocals are often
The motor of a four wheeler traveling along a muddy trail generates an average power of 7.20 104 W when moving at a constant speed of 11 m/s. What is the tension in the tow rope pulling the log
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