Physics, 08.08.2019 22:30 jynaepooh

Why is it difficult to determine where cosmic rays come from?

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Physics, 21.06.2019 19:40, BigDough9090

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

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Physics, 22.06.2019 00:50, Amandarobersonn

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

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Physics, 22.06.2019 04:50, badpotterchris

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

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Physics, 22.06.2019 08:00, nikkiwoodward1ovgszp

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?