Imagine we've discovered a planet orbiting another star at 1 AU every 6 months. The planet has a moon that orbits the planet at the same distance as our Moon, but it takes 2 months. What can we infer about this planet?
A) It is more massive than Earth.
B) It is less massive than Earth.
C) It has the same mass as Earth.
D) We cannot answer the question without knowing the mass of the star.
E) We cannot answer the question without knowing the mass of the moon.
B
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The battery is disconnected from a series RC circuit after the capacitor is fully charged and is replaced by an open switch. When the switch is closed,
a. the current through the resistor is always greater than the current through the capacitor. b. the current through the resistor is always less than the current through the capacitor. c. the current through the resistor is always equal to the current through the capacitor. d. the capacitor does not allow current to pass. e. the current stops in the resistor.
An alpha particle has a mass of 6.64 × 10-27 kg and a charge of 3.20 × 10-19 C, and it is traveling at 0.9650c
(c = 3.00 × 108 m/s), 1 eV = 1.60 × 10-19 J) (a) What is its rest energy (in GeV)? (b) What is its total energy (in GeV)? (c) What is its kinetic energy (in GeV)?
Information on the distribution of disease gives clues about the ____________________ of disease.
What will be an ideal response?
The ____ of a gas is a measure of the average speed of the particles (atoms or molecules) in the gas
a. heat b. composition c. temperature d. blue shift e. binding energy