3. The earth exerts a gravitational force of 530 N on an object. What is the mass of the object in kilograms?

The force is F = 530 newtons.

The acceleration of gravity on earth is approximately 9.8 m/s^2, so a = 9.8

Use Newton's second law to find m

F = m*a

530 = m*9.8

9.8m = 530

m = 530/9.8

m = 54.0816326530612

m = 54

The mass is about 54 kg.

around 53-54

Explanation:

the gravitational pull is almost 10 (9.807 m/s²) so as long as the numbers are not that big its easy and mostly accurate to divide by 10

show the wavelengths of a wave. show the crests of a wave.

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement