Explanation:
Heat energy
Solar energy
Electrical energy
Energy is the ability to do work. There are different forms of energy and they can be converted from one form to the other.
Heat energy is due to the changes in temperature of a body. When a body is heated, the electrons excite and gives off radiant energy which are visible to human eye. We often see red light when a body is heated.
Solar energy can be absorbed by organisms to produce light. Such an example is bioluminescence in some organisms. During the day, they trap solar energy that they glow with at night.
Electrical energy can also be used to produce light. We often see this in lightning and electrical bulbs in a circuit.
learn more:
Human eye and visible light brainly.com/question/5305525
#learnwithBrainly
Answer:
a = 45 m/s/s
Explanation:
As we know that total mass of the rocket is
total mass of the fuel is given as
all the fuel is burnt in 15 s
so rate of the fuel burning is given as
now the thrust force on the rocket is given as
so we have
so we have
now acceleration is rate of change in velocity
so acceleration at t = 15 s
This is a good question. The short (but less satisfying) answer is: "because the hydrostatic pressure of oil at a certain depth depends on the height of the oil level, measured from that point." So, you can have a tiny amount of oil but arranged in a column that makes it very tall/high and get high pressure, and have same amount of oil spread so that the height is negligible to produce a negligible amount of pressure. The exact formula for pressure is P=r*h*g (r stands for the liquid density, h for height, and g for gravitational acceleration).
The long answer, but much more satisfying, goes through the derivation of this formula. I recommend searching for a good video explaining hydrostatic pressure. (I can't post links).
