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zimovet [89]
4 years ago
14

What is the purpose of a valve?

Physics
2 answers:
user100 [1]4 years ago
8 0
To prevent blood backflow!

Aleks04 [339]4 years ago
5 0
In general or valves are used to turn off or proportionately control the flow of fluid through any system. Your faucet in your bathroom is a type of valve. You can turn it all the way off and all the way on, but you can also turn it on a little bit at a time.
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In which scenarios does conduction occur? Check all that apply.
Lera25 [3.4K]
2,3,5 are correct just took the test
4 0
3 years ago
Read 2 more answers
What type of conversion is taking place when natural gas is used to heat water?
frutty [35]
The type of conversion that is taking place when natural gas is


burned to heat water is referred to as chemical conversion. In this

conversion thermal energy is produced.
6 0
3 years ago
Energy is released during the fission of pu-239 atoms as a result of the
pav-90 [236]
<h2>Answer: process of converting matter into energy</h2><h2></h2>

Nuclear fission consists of dividing a heavy nucleus into two or more lighter or smaller nuclei, by means of the bombardment with neutrons to make it unstable. In this process that takes place in the atomic nucleus, neutrons, gamma rays and <u>large amounts of energy are emitted.  </u>

Then, with this division a great release of energy occurs and the emission of two or three neutrons, other particles and gamma rays.  

This means fission is a process in which energy is released by  the separation of the components of the nucleous of the atom.

In other words:

<h2>Matter is converted to energy .</h2>

6 0
3 years ago
two teams are playing tug of war. team a pulls to the right with a force of 450n .team b pulls to the left with a force of 415 n
Alex_Xolod [135]

Explanation:

It is given that, two teams are playing tug of war.

Force applied by Team A, F_A=450\ N

Force applied by Team B, F_B=415\ N

We need to find the net force acting on the rope. It is equal to :

F_{net}=F_A-F_B

F_{net}=450-415

F_{net}=35\ N

So, the net force acting on the rope is 35 N and it is acting toward right. Hence, this is the required solution.

4 0
3 years ago
Each of the four expansion models (recollapsing, critical, coasting, and accelerating) predict different ages for the universe,
cupoosta [38]

Answer:

This is because the age of the universe is determined by the pace of expansion in the past, and each model forecasts a different pace.

Explanation:

The age of the universe is determined by the pace of expansion in the past, and each model forecasts a different pace.

This is due to the fact that the expansion rate in the coasting model is constant and never changes. Because the cosmos is growing faster now than during the old days, recollapsing and critical models give shorter ages. According to the accelerating model, the universe is growing at a slower rate currently than in the past, implying an older age.

4 0
3 years ago
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