What kind of circuit element stores and releases charge? A.
A voltmeter
B.
A capacitor
C.
A battery
D.
A resistor

Natural forces that can alter ecosystems include seasons and climate changes. t or f

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Light from the sun reaches the earth in 8.3 minutes. the velocity is 3.00 x 10^8 m/s. how far is earth from the sun? i know how to get to d = (3 x 10^8 m/s)(498 sec). i just don't know how to get from there to the answer being 1.5 x 10^11 m.