What evidence is there to prove Jupiter has a liquid interior?

a. Jupiter is oblate
b. Jupiter rotates rapidly
c. Jupiter is tilted on its axis
d. Jupiter has a thin, hot atmosphere
e. Jupiter has a very strong magnetic field


a

Physics & Space Science

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Astronomers generally can measure a star's mass if only it is a member of a binary star system. What characteristics of the stars must we know to measure the masses of the stars in a binary system?

A) their spectral types and their distance from Earth B) their absolute magnitudes and their luminosities C) their orbital period and average orbital distance D) their luminosities and distance from Earth

Physics & Space Science

Which of the following temperatures is the lowest?

A. 0°F B. 0°C C. 263 K D. All of these choices are the same

Physics & Space Science

Two identical coils of wire are placed on a single horizontal wooden broom handle. The coils are separated by a few centimeters. We now run identical currents in the same direction through each coil. The coils experience

A. a repulsive magnetic force. B. a repulsive electrostatic force because both coils are identically charged. C. an attractive electrostatic force because one coil is negatively charged and the other positively charged. D. no forces because the currents are identical. E. an attractive magnetic force.

Physics & Space Science

Consider horizontal parallel plates with a fixed potential difference.  The upper plate has a voltage difference of 30 V with the lower plate, and they are separated by 3 cm. You move the two plates carefully to a separation of 4 cm. What is the strength of the electric field between the plates?

A. 1000 volts/meter B. 750 volts/meter C. 7.5 volts/meter D. 3000 volts/meter

Physics & Space Science