The particles in the nucleus referred to as nucleons are
A. electrons and protons.
B. protons and neutrons.
C. neutrons and electrons.
D. electrons and photons.
B. protons and neutrons.
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The electric field in a region of space is given by Ex = (3.0x) N/C, Ey = Ez = 0, where x is in m. Points A and B are on the x axis at xA = 3.0 m and xB = 5.0 m. Determine the potential difference VB ? VA
a. ?24 V b. +24 V c. ?18 V d. +30 V e. ?6.0 V
Direct detection of an extrasolar planet means ________
A) seeing the planet with the naked eye B) acquiring images or spectra of the planet C) observing the planet's effect on its host star D) sending a space probe to the planet
The graphs below show a voltage phasor at different instances of time. Which voltage phasor shows the instantaneous value of the voltage with the largest magnitude?
A.
B.
C.
D.
E.
The shortest-daylight day for people in the Southern Hemisphere at latitudes greater than 30°S occurs at the
a. summer solstice. b. vernal equinox. c. winter solstice. d. autumnal equinox.