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Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.
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Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)
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If frequency goes down, what happens to wavelength? does it get shorter or longer?
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Physics, 23.06.2019 08:00
The cheetah is considered the fastest running animal in the world. cheetahs can accelerate to a speed of 20.1 m/s in 2.50 s and can continue to accelerate to reach a top speed of 28.1 m/s. assume the acceleration is constant until the top speed is reached and is zero thereafter.1) starting from a crouched position, how long does it take a cheetah to reach its top speed? (express your answer to three significant figures.) s2) how far does it travel in that time? (express your answer to three significant figures.) m3) if a cheetah sees a rabbit 120 m away, how long will it take to reach the rabbit, assuming the rabbit does not move? (express your answer to three significant figures.)
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Do you think the pitch of the waves sounds significantly different when both speakers are on?...
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