Every fundamental charged particle has an antiparticle such that when the particle and antiparticle collide, they annihilate each other to create two (uncharged) photons. What does conservation of charge imply about how a particle’s charge compares to that of its antiparticle? The particle’s and antiparticle’s charges
A. must be identical in sign and magnitude.
B. must have opposite signs and the same magnitude.
C. must have opposite signs, maybe different magnitudes.
D. must each be zero.
E. are not constrained at all by charge conservation.
B. must have opposite signs and the same magnitude.
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The period-luminosity relationship is primarily used for main sequence stars
Indicate whether the statement is true or false
A convex lens is placed on a flat glass plate and illuminated from above with monochromatic red light. When viewed from above, concentric bands of red and dark are observed
What does one observe at the exact center of the lens where the lens and the glass plate are in direct contact? A) a bright red spot B) a dark spot C) a rainbow of color D) a bright spot that is some color other than red
Faraday's Law: A flat circular loop having one turn and radius 5.0 cm is positioned with its plane perpendicular to a uniform 0.60-T magnetic field. The area of the loop is suddenly reduced to essentially zero in 0.50 ms. What emf is induced in the loop?
Fill in the blank(s) with the appropriate word(s).
Certain stars at the end of their lives are thought to collapse combining their protons and electrons together to form a neutron star. Such a star could be thought of as a giant atomic nucleus. If a star of mass equal to that of the Sun (M = 1.99 × 10^30 kg) collapsed into neutrons (mn = 1.67 × 10^?27 kg), what would be the radius of such a star? (Hint: r = r0A1/3, where r0 = 1.20 × 10^?15
m). a. 25.4 km b. 18.7 km c. 12.7 km d. 6.40 km