We are at ________ in January, when we are closest to the Sun in our elliptical orbit
Fill in the blank(s) with correct word
perihelion
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Why do Uranus and Neptune appear blue?
A) Methane gas absorbs all colors except blue. B) Gas molecules in their atmosphere preferentially scatter blue light. C) Small dust grains preferentially scatter blue light. D) Methane snowflakes absorb all colors except blue, which they reflect.
An isolated, charged conductor is in electrostatic equilibrium. Which statement is correct? a. The net charge is never zero inside the conductor
b. The electric field is always zero just outside the conductor. c. The charge density on the conductor's surface is greatest where the surface is sharpest. d. None of these statements are correct.
Which condition of motion must be met with regard to a charged particle if it is in the process of emitting electromagnetic radiation?
a. accelerates b. moves at the speed of light c. moves at constant velocity d. moves parallel to a uniform magnetic field
A coil is placed in a magnetic field and has a flux ?B through it. The coil is stressed so that its area reduces to 75% of its original value. If the plane of the coil stays the same and the flux through it remains the same, how must the magnetic field change?
a. It must increase by 25%. b. It must increase by 33%. c. It must increase by 125%. d. It must decrease by 25%.