1.) calculate the weight of a 7kg object
2.) calculate the mass of a 65 n object)

Explanation:

Mass and Weight

The mass m of an object is known as the amount of material it has. Weight is the force that mass is attracted to planet Earth or another object much bigger than it. The relation between them is

Where g is the acceleration of gravity ( on Earth)

1. If we know the mass of an object m=7 kg, we can compute its weight

2. If we know the weight W=65 N of some object, we can compute its 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.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.