.50-kg stone is dropped from rest at a height of 3.75 m. What impulse does gravity impart to this stone from the instant it is dropped until it hits the ground, assuming negligible air resistance

21.41 kg-m/s.

Explanation:

Data provided

Height = 3.75 m

Mass of stone = 2.50 kg

The computation of impulse is shown below:-

First we will compute the time using motion's equation  which is

as,

s indicates height

u indicates initial speed

t indicates time

Now, we will use the equation and put the values

t = 0.874 seconds

After computing the time now we will find put the impulse  which is

Now we will put the values into the above formula to reach the impulse

J = 21.41 kg-m/s.

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.

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