<h3><u>Answer;</u></h3>
Universe, galaxy, solar system, planet, moon
<h3><u>Explanation;</u></h3>
- <u>A galaxy</u>, such as our Milky Way Galaxy, is a collection of solar systems orbiting around a central core.
- <u>A solar system</u> consists of a star, normally the sun and all of its planets, asteroids, comets and other bodies.
- <u>A planet</u> is a nearly spherical body which is in orbit around the Sun. Planets are larger than moons.
- <u>Moons</u> are typically rocky bodies which are in orbit around planets.
Answer:
Energy cannot be changed from one form to another without a loss of usable energy
Explanation:
Second law of thermodynamics states that the total entropy or the randomness of the system remains constant over time. It also states that the net entropy will remain the same or it will increase.
Entropy of a system is given by heat absorbed divided by temperature. It is given by :
So, the correct option is (A) "Energy cannot be changed from one form to another without a loss of usable energy".
T = (v-0)/a
t = (45.5)/(9.8)
= 4.64m/s.
hope this helps :)
Answer:
Correct answer: Third statement P = 4900 W
Explanation:
Given:
m = 500 kg the mass of the elevator
h = 10 m reached height after t = 10 seconds
P = ? power of the motor
The formula for the calculating power of the motor is:
P = W / t
since work is a measure of change in this case of potential energy then it is:
W = ΔEp = Ep - 0 = Ep
In this case we must take g = 9.81 m/s²
Ep = m g h = 500 · 9.81 · 10 = 49,050 W ≈ 49,000 W
Ep ≈ 49,000 W
P = Ep / t = 49,000 / 10 = 4,900 W
P =4,900 W
God is with you!!!
It would be 22 depths inside the glass of water.
