The potential energy of a body 5m above the ground is 200j. Calculate the mass of the body if g=10m/s.

the mass of the body is 4 kg

Explanation:

PE = mass • height • gravity

200J = mass • 5m • 10m/s/s

divide both sides by 50

4kg = mass

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.

1) estimating temperature to the nearest tenth of a degree

2) estimating the mass of the sample to the nearest tenth of a gram

4) the position of the cups of sand and water under the heat lamp