We know Mercury must have a large metal core because it has a high density

Indicate whether the statement is true or false


T

Physics & Space Science

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What is the difference between a synodic month and a sidereal month?

A) A synodic month is our 30 or 31 day calendar month and a sidereal month is the time it takes for a cycle of the Moon's phases. B) A synodic month is the time it takes for a cycle of lunar phases and a sidereal month is the time it takes the Moon to orbit Earth (relative to the stars). C) A synodic month is the time it takes for a cycle of the Moon's phases and a sidereal month is our 30 or 31 day calendar month. D) A synodic month is based on the orbit of some planet around the Sun and a sidereal month is based on the orbit of the Moon around Earth.

Physics & Space Science

In 20 minutes, Kara ran 2.40 km on a treadmill facing due east. Relative to the gym, what were her displacement and average velocity during this time interval?

A. 0; 0 B. 0; 2.00 m/s C. 2.40 km, east; 0 D. 2.40 km, east; 2.00 m/s, east E. 2.40 km, west; 2.00 m/s, west

Physics & Space Science

The basic function of an automobile's carburetor is to atomize the gasoline and mix it with air to promote rapid combustion. Assume that 40 cm3 of gasoline is atomized into N spherical droplets. Each droplet has a radius of 2.0 × 10^-5 m. Find the total surface area of these N spherical droplets

a. 60,000 cm2 c. 20,000 cm2 b. 24,000 cm2 d. 2800 cm2

Physics & Space Science

How would you "weigh" the astronauts in orbit (where they feel weightless) so that you can keep them in good health?

What will be an ideal response?

Physics & Space Science