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Delicious77 [7]
3 years ago
12

Which statement best describes what energy transfer diagrams show? Energy can change form, but the total amount of energy stays

the same.
Every energy transformation results in a reduction of energy.
Energy transformations result in fewer types of energy.
Each type of energy can change into one other type of energy.
Physics
2 answers:
Eduardwww [97]3 years ago
5 0

The correct answer to the question is : A) Energy can change form, but the total amount of energy stays the same.

EXPLANATION:

Before answering this question, first we have to understand law of conservation of energy.

As per law of conservation of energy, the energy can neither be created nor be destroyed. It only changes from one system to another system, and the total energy of an isolated system is always constant.

The energy transfer diagram is based on this law.

Hence, the best description about energy transfer diagram will be that energy can change form, but the total amount of energy stays the same.

Rom4ik [11]3 years ago
3 0
Energy can change form, but the total amount of energy stays the same.
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azamat

Explanation:

Q1) What is the speed of the tip of the minute hand of a clock where the hand is of length 7cm?

Ans1) speed, v=st=2πrT=2×227×7×10-260×60=119×10-4=1.22×10-4m/s

<h2><em><u>Hope it helps</u></em></h2>
5 0
3 years ago
Atmospheric pressure decreases as altitude increases. in other words, there is more air pushing down on you at sea level, and th
Nutka1998 [239]
At sea level, the size amid the 2 alkanes lets for pentane to simmer at a lower temperature than hexane. Phenol has a higher boiling point due to hydrogen bonding High altitude would have the same order while low pressure only cuts the temperature at which a solvent boils. Boiling has to do with molecular size, the occurrence/nonappearance of hydrogen bonds, and other steric issues.
So the answer would be pentane high altitude, hexane high altitude, hexane sea level, hexanol sea level. In order of boil first to boil last. This is clarified because altitude has a better effect on vapor pressure (and hence boiling points) than inter-molecular forces.
3 0
3 years ago
330 g of water at 55°c are poured into an 855 g aluminum container with an initial temperature of 10°
Olenka [21]
The final temperature of the system is 32.5°
we know,  H = mcT 
where, H = Heat content of the body 
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c = Specific heat
T = Change in temperature
According to to the Principle of Calorimetry 

The net heat remains constant i.e. 
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⇒ 330 x 1 x (45 - T) = 855 x \frac{900}{4200} x (T - 10) 

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or T = 32.5°
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3 years ago
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8 0
3 years ago
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When sitting in the tree the cat has a total of 1375J in its Gravitational potential store. What is the maximum amount of energy
Murrr4er [49]

Answer:

1375J

Explanation:

The gravitational potential/potential energy of the at the top of the tree which is the energy by virtue of its position.

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height = h

At the top of the tree, the value of h (height) is high resulting in the gravitational potential. When the cat lands on the ground, the value of h is zero, the the gravitational potential would be zero and all the potential energy have been converted to other forms of energy.

Therefore, the total gravitational potential store is equal to the maximum amount of energy that can be transferred which is equal to 1375J.

4 0
3 years ago
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