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Author Question: A ball is thrown horizontally with an initial velocity of 40 m/s from a height of 10 m. How long ... (Read 67 times)

james9437

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on: Jul 29, 2018
A ball is thrown horizontally with an initial velocity of 40 m/s from a height of 10 m. How long will it take for the ball to touch the ground? Use g = 10 m/s2.
 
  A) 0.70 second
  B) 1.0 second
  C) 2.0 seconds
  D) 1.4 seconds
  E) 2.4 seconds

Question 2

The cosmic background radiation permeating the universe has the spectrum of a 2.7 K thermal radiator. What is the peak wavelength?
 
  What will be an ideal response?


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SeanoH09

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

D

Answer to Question 2

1.1 mm (microwave region)


james9437

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


SeanoH09

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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