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Author Question: An object from which light cannot escape is called a (a) a black hole (b) a neutron star (c) a ... (Read 38 times)

mp14

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on: Jul 28, 2018
An object from which light cannot escape is called a
  <-- if ppt--><--endif-->
  (a) a black hole
  (b) a neutron star
  (c) a white dwarf
  (d) a type I supernova

Question 2

A 2.0-kg mass swings at the end of a light string (length = 3.0 m). Its speed at the lowest point on its circular path is 6.0 m/s. What is its kinetic energy at an instant when the string makes an angle of 50 with the vertical?
 a. 21 J
  b. 15 J
  c. 28 J
  d. 36 J
  e. 23 J


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trampas

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Reply #1 on: Jul 28, 2018
Answer to Question 1

a

Answer to Question 2

b


mp14

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Reply 2 on: Jul 28, 2018
Gracias!

bdobbins

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Reply 3 on: Yesterday
Wow, this really help

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