The tides are greatest when gravity from the moon and from the sun add together on the surface of the earth.

from the above diagram, which phase of the moon will result in the greatest difference between high and low tide?
a.
crescent moon
b.
last quarter
c.
first quarter
d.
new moon

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Given the graphed function below which of the following orders pairs are found on the inverse function

Proportions in triangles solve for x

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?