For any displacement of a charged particle, the work done by the magnetic force on the charged particle moving in a magnetic field is zero J
Indicate whether the statement is true or false
TRUE
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Stars are born in
a. reflection nebulae. b. dense molecular clouds. c. HII regions. d. the intercloud medium. e. the local bubble.
What is the effect of increasing the wavelength in an interference pattern?
a. There is no effect; to change the pattern, you have to change the frequency, not the wavelength. b. The nodal lines move closer to the central line. c. The pattern seen disappears. d. The image gets more blue-violet and less red. e. The interference pattern is wider for the longer wavelength.
The total number of stars in the observable universe is about ________
A) the same as the number of grains of sand on all the beaches on Earth B) the same as the number of grains of sand in a school sandbox C) 100 billion D) the same as the number of atoms that make up the Earth
A constant volume gas thermometer has a pressure of 2.00 atm at 100°C. What would its pressure be at 0°C?
a. 0.732 atm b. 1.46 atm c. 1.24 atm d. 1.37 atm e. More information is needed to find the answer.