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Q. A 1300 {rm N} crate slides 13 {rm m} down a ramp that makes an angle of 30^circ with the horizontal. If the crate slides at a constant speed, how much thermal energy is created?

Q. Newly sprouted sunflowers can grow at the rate of 0.30 in. per day. One such sunflower is left on Earth, and an identical one is placed on a spacecraft that is traveling away from Earth with a speed of 0.93c. How tall is the sunflower on the spacecraft when the one on Earth is 2.0 in. high?

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Category:- Physics
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