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Author Question: A 10-kg rock and 20-kg rock are dropped from the same height and experience no significant air ... (Read 185 times)

sam.t96

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on: Jul 29, 2018
A 10-kg rock and 20-kg rock are dropped from the same height and experience no significant air resistance. If it takes the 20-kg rock a time T to reach the ground, what time will it take the 10-kg rock to reach the ground?
 
  A) 4T B) T/2 C) T D) 2T E) T/4

Question 2

All magnetic forces are produced by
 
  A) charges in motion.
  B) stationary charges.
  C) electromagnetic generators.
  D) permanent magnets.
  E) protons.


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perkiness

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

A


sam.t96

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Reply 2 on: Jul 29, 2018
Gracias!

smrtceo

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Reply 3 on: Yesterday
Wow, this really help

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