The Compton effect justifies that light acts as photons
Indicate whether the statement is true or false
TRUE
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A CD with a diameter of 12.0 cm starts from rest and with a constant angular acceleration of 1.0 
acquires an angular velocity of 5.0 rad/sec. The CD continues rotating at 5.0 rad/sec for 15.0 seconds and then slows to a stop in 12.0 second with a constant angular deceleration. What is the tangential velocity of a point 4.0 cm from the center at the time 25.0 seconds from the start?
a. 
b. 
c. 
d. 
e. 
What are the dimensions of a square acre of ground if 1 square mile = 640 acres?
A) 147' × 147' B) 156' × 156' C) 174' × 174' D) 194' × 194' E) 209' × 209'
The special theory of relativity predicts that there is an upper limit to the speed of an object. It therefore follows that there is also an upper limit on which of the following properties of the object?
(There could be more than one correct choice.) A) The kinetic energy of the object. B) The total energy of the object. C) The linear momentum of the object. D) None of the above.
Two large closely-spaced parallel metal plates are uniformly and oppositely charged and the electric field between them is 7.6 × 106 N/C
(a) What is the charge per unit area on each plate? (b) If the plates are now moved two times farther apart, what is the electric field between the plates?