Electrons are "spin one-half," photons are
a. also spin one-half c. spin one
b. spin zero d. none of the above
C
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At what distance from the central axis of a long straight thin wire carrying a current of 5.0 A is the magnitude
of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of about 5.0 × 10-5 T? (?0 = 4? × 10-7 T ? m/A) A) 5.0 cm B) 4.0 cm C) 2.0 cm D) 3.0 cm E) 1.0 cm
The greater the mass of the foreground cluster of galaxies, the ________ the warping of the images of the distant galaxies behind it
Fill in the blank(s) with correct word
A 50-kg satellite circles planet Cruton every 5.6 h in an orbit with a radius of 12 × 10^6 m. What is the magnitude of the gravitational force on the satellite by planet Cruton?
a. 63 N b. 58 N c. 68 N d. 73 N e. 50 N
What property of beta decay led to the proposal that the neutrino had to exist?
a. Beta decay changes the charge of nucleons. b. Beta decay results in electrons with a single predictable kinetic energy. c. Positron rather than electron emission is observed from some nuclei. d. Beta decay can result in transmutation from one element to another. e. Beta decay results in electrons with a range of kinetic energy levels.