According to Newton's Law of Universal Gravitation, if the Moon were three times further from Earth, the force by Earth on the Moon would
A) increase by a factor of 3.
B) decrease by a factor of 3.
C) increase by a factor of 9.
D) decrease by a factor of 9.
E) stay the same.
Question 2
Carbonaceous meteorites are believed to come from:
A) coal formed on Mars, then blown into space by asteroid impacts.
B) the core of a differentiated type M asteroid, now broken up.
C) the crust of a differentiated C type asteroid, now broken up.
D) a broken up cometary nucleus, dark like Comet Halley's nucleus.
E) deep space, far beyond the solar system, hence their very low density.
Mars oppositions from 2003-2018, viewed from above the ecliptic with the Earth centered
Mosaic image of the lunar south pole of the Moon
The Sun as it appears from the surface of the Earth at Sunset.
Friction significantly influences airflow near Earth’s surface, but its effect is negligible at ...
Short-wavelength flux is reflected by Earth
Moving currents are affected by Earth’s rotation