Jessica and matthew are running toward the point p along the straight paths that make a fixed angle of θ. suppose that matthew runs with velocity va meters per second and jessica with velocity vb meters per second. assume that θ = π/3. use the chain rule to determine the rate at which the distance f between matthew and jessica is changing when x = 40, y = 30, va = 4 m/s, and vb = 3 m/s.

the reason is because the moon has some form of gravity, and that gravity pulls the ocean tides.

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

d. air pressure decreases as altitude increases.