Answer:
Option D 3.9
Explanation:
First, you need to use the correct equation which is the following:
COP = Q/W
Where:
Q = heat absorbed
W = work done by the pump
COP = coefficient of perfomance
We have all the data, so, all you need to do is replace in the above expression and you shoould get the correct result:
COP = 30 / 7.7
COP = 3.896
This result you can round it to 3.9. option D.
Answer:
this depends on religion
Explanation:
some people believe in the big bang and some people believe in Jesus Christ and other gods.
big bang- Gravity
God- spoke
The answer is B............
Answer: Negative acceleration occurs when an object slows down in the positive direction.
Positive acceleration occurs when an object speeds up in the positive direction.
Explanation: Acceleration can be positive or negative. A negative acceleration is also known as deceleration. And deceleration occurs when an object is coming to rest. While acceleration simply means that an object is Speeding up.
Negative acceleration occurs when an object slows down in the positive direction.
Positive acceleration occurs when an object speeds up in the positive direction.
From what is known about collisions, picture 1 is an inelastic collision while picture 2 is an elastic collision.
<h3>What is elastic collision?</h3>
Elastic collision is a type of collision in which both the momentum and kinetic energy of the bodies are conserved.
- In elastic collision, the two bodies do not stick together.
<h3>What is inelastic collision?</h3>
Inelastic collision is a type of collision in which only the momentum is conserved but kinetic energy decreases
- In inelastic collision, the two bodies stick together.
Therefore, picture 1 is an inelastic collision while picture 2 is an elastic collision.
Learn more about collisions at: brainly.com/question/7694106