Which condition of motion must be met with regard to a charged particle if it is in the process of emitting electromagnetic radiation?
a. moves at constant velocity
b. accelerates
c. moves at the speed of light
d. moves parallel to a uniform magnetic field
b
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Our Milky Way is part of ________ which has about ________ member galaxies.
A. the coma cluster; 500 B. the beehive association; 100 C. the Pleiades; 3 D. the local group; 30
Which constellation lies in the direction toward the galactic center?
A) Orion B) the Big Dipper C) Leo D) Sagittarius E) Taurus
Consider a container of 2.0 grams of hydrogen (one gram mole). Suppose you removed all the electrons and moved them to the other side of the Earth (Earth diameter 12740. Km)
(a) How much charge is left behind? (b) What is the attractive force between the protons here and the electrons at the other side of the Earth?
A glass plate having an index of refraction is 1.66 is immersed in a certain alcohol. The surface of the glass is inclined at an angle of 44° with the vertical
When a horizontal ray in the glass strikes the interface, you observe that it is at the critical angle. What is the index of refraction of the alcohol? A) 1.15 B) 1.13 C) 1.11 D) 1.09 E) 1.17