Answer:
D. must have a moon
Explanation:
Scientists say that a planet must orbit a star, must be round, and must be big enough so its gravity clears its orbit of other objects. Therefore, the statement that is not a requirement for a planet is
D. must have a moon
For example, Mercury and Venus are planets with no moons.
Answer:
Lifting overcomes the pull of gravity. Heavier objects need to have a strong force to lift them. Try lifting a bag of cement and see if it's easy or hard.
Explanation:
I'm thinking C. but this time I'm not that sure
<span>Density is a physical
property which describes the mass of a substance per unit of volume of the
substance. It is expressed as Density = m / V. We calculate as follows:
Density = m / V
V = volume of a cube = (edge length) ^3 = (2.65 cm) ^3 = 18.61 cm^3
Density = 50.3 g / 18.61 cm^3 = 2.70 g / cm^3</span>
Answer and Explanation:
The estimation of the mass of the objects is as follows
Given that
The mass of an apple is about 100 g
Just like that, we do some estimation of different objects
A dime is around 1 g
A smartphone is about 100 g
An adult male is approx 100 kg
A college physics textbook is around 1 kg
A ripe banana is around 100 g
A small car is around 1,000 kg
