Answer:
If a rock has a volume of 2 cm³ and a mass of 12 gr, its density will be 6 gr/cm³.
Explanation:
Density is a parameter used in chemistry and physics, which relates the mass and volume of a solid or compound, establishing the amount of volume that occupies a given mass.
If we observe the density formula, we can see that the greater the mass, the greater the density, while the volume is inversely proportional, so the lower the volume, the greater the density. This formula is:
ρ = m/V
Therefore, according to the mass and volume of the rock
ρ = 12 grs / 2 cm³
<em>ρ = 6 grs/cm³
</em>
Being the density of the rock equal to 6 gr/cm³.
John Kay invented the spinning jenny, which increased the production of thread.
The correct option is B.
<h3>What is spinning jenny?</h3>
The spinning jenny is a multi-spindle spinning frame invented by John Kay.
It was one of the great inventions that started the Industrial Revolution in England's textile industry.
This machine was used to spin thread and wool.
It was developed in 1767.
Thus, the correct option is B, John Kay.
Learn more about spinning jenny, here:
brainly.com/question/1642538
Answer:
characteristic of a region or climate that is frost-free with temperatures high enough to support year-round plant growth given sufficient moisture
Explanation:
The type of lipid that you should avoid eating in large amounts would be cholesterol. Specifically cholesterol that is categorized as unhealthy or bad.
Receptors are groups of specialised cells. They detect a change in the environment stimulus. In the nervous system this leads to an electrical impulse being made in response to the stimulus. Sense organs contain groups of receptors that respond to specific stimuli.
