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Wewaii [24]
3 years ago
12

What happens to the energy in a closed system?

Physics
2 answers:
inn [45]3 years ago
5 0

Answer:

can exchange energy with its surroundings through heat and work transfer. In other words, work and heat are the forms that energy can be transferred across the system boundary.

denis23 [38]3 years ago
4 0
The law of conservation of energy is an important law of physics. Basically, it says that while energy can turn from one kind into another, the total amount of energy doesn't change. This law applies only to closed systems, meaning systems that can't exchange energy with their environment
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300N effort is applied to lift the load of 900N by using a first class lever. If the distance between the load and fulcrum is 20
Klio2033 [76]

Answer:

Effort=300N

Load=900N

Load distance=20m

Now,

Ed=(L*Ld)/E

Ed=(900*20)/300

Ed=1800/300

Ed=6m

Explanation:

7 0
2 years ago
Read 2 more answers
If you toss a ball vertically upward in a uniformly moving train, it returns to its starting place. Will it do the same if the t
gogolik [260]

Answer:No

Explanation:

No

As the train is accelerating so train velocity will be more as compared to the ball  and thus will cover more distance as compared to the ball.

When the ball is thrown upward with some velocity, it also possesses the train velocity at the time of throwing but as time passes velocity of train increases due to acceleration of the train. This causes the ball to fall behind the point of launch.

3 0
4 years ago
Human activities can have an impact on Earth's systems. Which Earth system is most affected when factories burn harmful chemical
IgorC [24]

Answer:

Hey

Your answer would be Earth's atmospheric system

Over time of cousre it will effect Earth's intire surface.

DON'T DRIVE MORE THAT YOU HAVE TO, SAVE THE EARTH!

7 0
3 years ago
What conclusion can be drawn from the statement that an element has high electron affinity, high electronegativity, and a high i
amid [387]

Answer:

D) The element is most likely from Group 6A or 7A and in period 2 or 3.

Explanation:

Electronegativity of an atom is the tendency of an atom to attract shared paired of electron to itself. Electronegativity increase across the period from left to right.The ability of an atom to attract electron to itself is electronegativity. Group 7A and 6A elements can easily attract atoms to itself so they are highly electronegative. The most electronegative element in the periodic table is fluorine.Group 6A and 7A is likely to have high electronegativity.

Electron affinity of an atom is the amount of energy release when an atom gains electron . Generally, when atom gains electron they become negatively charged. Group 6A and 7A elements have high electron affinity.  

Ionization energy is the energy required to remove one or more electron from a neutral atom to form cations.  ionization energy of group 7A and 6A are usually high because the energy required to remove these electron is usually very high . The elements in this groups usually gain electron easily so the energy to remove electron is very high.

4 0
3 years ago
See attachment for the question
Zarrin [17]

The acceleration of the body is provided by the tension in the rope.

<h3>What is centripetal acceleration?</h3>

The centripetal acceleration is given by a = v^2/r. v = velocity of the body, r = radius

a = (8.40 m/s)^2/(8.50 m)

a = 8.3 m/s^2

The tension in the rope is the force that provides the centripetal force in the rope.

Learn more of centripetal acceleration:brainly.com/question/14465119

#SPJ1

6 0
2 years ago
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