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An arrow is shot at an angle of θ=45° above the horizontal. The arrow hits a tree a horizontal distance D=220m away, at the same height above the ground as it was shot. Use g=9.8m/s2 for the magnitude of the acceleration due to gravity.
A) Find ta, the time that the arrow spends in the air.
B) Suppose someone drops an apple from a vertical distance of 6.0 meters, directly above the point where the arrow hits the tree. How long after the arrow was shot should the apple be dropped, in order for the arrow to pierce the apple as the arrow hits the tree?
The pressure in each of your car tires is 1.90 105 Pa. The mass of your car is 1500 kg. what is the contact area of each tire with the road
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A diffraction grating has 3996 lines/cm. Light that contains all wavelengths between 464 and 638 nm shines on the grating. Calculate the width of the dark area
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