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A train travels due south at32 m/s(relative to the ground) in a rain that is blown toward the south by the wind. The path of each raindrop makes an angle of 69° with the vertical, as measured by an observer stationary on the ground. An observer on the train, however, sees the drops fall perfectly vertically. Determine the speed of the raindrops relative to the ground.
A model rocket launches with an initial velocity of 7 m/s, at an angle of 81 degrees (with respect to the horizon). How far does the rocket travel in the horizontal direction
A gymnast of mass 62.0 hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch.
a block hangs from a string from the outside rood of a van. when the van rounds a corner of radius equal to 150cm at a
What is the diameter of a copper sphere that has the same mass as a 2.00 cm x 2.00cm x 2.00 cm cube of aluminum?
A magnetic field is oriented at an angle = 60 degrees to the normal of a rectangular area. what is the area of a rectangle
After a fall, a 96 kg rock climber finds himself dangling from the end of a rope that had been 17 m long and 9.9 mm in diameter but has stretched by 3.1 cm. For the rope, calculate (a) the strain, (b) the stress, and (c) the Young's modulus.
A 5.6cm diameter horizontal pipe gradually narrows to 2.9cm. When water flows through this pipe at a certain rate, What is the volume rate of flow
Two toy locomotives approach each other along the same line, and upon collision both stop dead still. What is the mass of the faster locomotive
We wish to coat flat glass (n 1.50) with a transparent material (n 1.25) so that reflection of light at wavelength 600 nm is eliminated by interference. What minimum thickness can the coating have to do this
what is the maximum mass that can hang without sinking from a 90cm diameter styrofoam sphere in water? assume the
1ml of distilled water is injected into a length of 3mm diametre tubing and sealed at the other end by folding over, Why doesn't water drain out when the tube is hung vertically
A spherical water drop, 1.80 ?m in diameter, is suspended in calm air owing to a downward-directed atmospheric electric field E = 452 N/C. What is the weight of the drop
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