What is the ratio of the light-gathering power of a 5-m telescope to that of a 0.5-m telescope?
a. 10
b. 0.1
c. 0.01
d. 100
e. 25
d
Physics & Space Science
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A proton's rest mass is 1.67 × 10^-27 kg. Calculate its kinetic energy when it is accelerated to a speed of 0.80 c
a. 1.0 × 10^-10 J b. 1.5 × 10^-10 J c. -2.0 × 10^-10 J d. 2.5 × 10^-10 J e. 7.5 × 10^-10 J
Physics & Space Science
An electron, moving south, enters a magnetic field. Because of this field, the electron curves upward. We may conclude that the magnetic field must have a component
A) downward. B) towards the east. C) towards the north. D) upward. E) towards the west.
Physics & Space Science
You can control the JPEG compression level with digital camera settings.
Answer the following statement true (T) or false (F)
Physics & Space Science
A light ray bends when it goes from one medium to another because of diffraction
Indicate whether the statement is true or false
Physics & Space Science