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Question #58ffa

An 81 kg football player moving 6.5 m/s tackles and collides with a stationary 140 kg football player. What speed will the football players have in the moment after impact?

Question #eeed8

What is the transfer of heat causing differences in air density?

A charge of #12 C# is passing through points A and B on a circuit. If the charge's electric potential changes from #70 J# to #34 J#, what is the voltage between points A and B?

Question #51140

Question #009ad

If a rocket of mass 117 kg is launched with a velocity of 800 m/s, how high does it rise?

A 5.82kg piece of copper metal is heated from 21.5°C to 328.3°C. What is the heat absorbed (in kJ) by the metal?

How do you solve #y=3x9# and #2y6x=18# using substitution?

Question #4d1a6

If #f(x) = 6x4#, what is #f^1(x)#?

What are some advantages and disadvantages of a hypothetical "flashlight" that would emit xrays instead of visible light?