What is the maximum possible arc that can be subtended by a rainbow? (Consider all possible viewing geometries)
a. 180°
c. 90°
b. 360°
d. 270°
B
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What must the initial state of motion of a charged particle be if it will follow a helical path in a magnetic field?
a) It must be moving at an angle that is neither parallel to nor perpendicular to the magnetic field. b) It must be moving parallel to the magnetic field. c) It must be moving perpendicular to the magnetic field. d) It must be moving in the direction opposite to the magnetic field. e) It must be initially at rest when it is placed in the magnetic field.
A parsec is slightly more than 200,000 AU
Indicate whether the statement is true or false
The coefficient of performance (COP) of a heat pump is defined as the ratio of
A) the heat delivered to the inside to the heat taken from the outside. B) the heat taken from the outside to the heat delivered to the inside. C) the heat delivered to the inside to the work done to move the heat. D) the heat taken from the outside to the work done to move the heat. E) the difference between the heat taken from the outside from the heat delivered to the inside to the work done to move the heat.
What is the change in relativistic momentum of an electron that accelerates from 0.900c to 0.930c?
a. 8.63E–23 kg·m/s b. 1.27E–22 kg·m/s c. 3.96E–22 kg·m/s d. 1.83E–22 kg·m/s