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3 years ago

What type of change occurs when ice absorbs energy and melts?

2 answers:

5 0

endothermic change because there is no change in weight or mass. It is not exothermic because exothermic change <span> is a chemical or physical change that releases heat.</span>

anygoal [31]3 years ago

3 0

The answer is C.endothermic change.

♡♡Hope I helped!!! :)♡♡

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30) A force produces power P by doing work W in a time T. What power will be produced by a force that does six times as much wor

schepotkina [342]

Answer:

A) 12P

Explanation:

The power produced by a force is given by the equation

$P=\frac{W}{T}$

where

W is the work done by the force

T is the time in which the work is done

At the beginning in this problem, we have:

W = work done by the force

T = time taken

So the power produced is

$P=\frac{W}{T}$

Later, the force does six times more work, so the work done now is

$W'=6W$

And this work is done in half the time, so the new time is

$T'=\frac{T}{2}$

Substituting into the equation of the power, we find the new power produced:

$P'=\frac{W'}{T'}=\frac{6W}{T/2}=12\frac{W}{T}=12P$

So, 12 times more power.

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3 years ago

Giving 20 points and brainiest <br> But please help me

monitta

Answer:

yeah, Do you want me to check your answers? Yes is correct

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3 years ago

A horizontal force of 350N is exerted on a 2.5 kg ball as it rotates uniformly in a horizontal circle of radius of 0.90m. Calcul

harkovskaia [24]

F=mv^2/R
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4 years ago

(a) A space vehicle is launched vertically upward from the Earth's surface with an initial speed of vi that is comparable to but

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Energy Conservation Theory,

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<h3>What is law of energy conservation?</h3>

The principle of energy conservation states that energy is neither created nor destroyed. It may change from one sort to another. Just like the mass conservation rule, the legitimacy of the preservation of energy depends on experimental perceptions; hence, it is an experimental law. The law of preservation of energy, too known as the primary law of thermodynamics

To learn more about Energy Conservation Theory, visit;

brainly.com/question/8004680

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2 years ago

Someone places a chocolate bar near a working radar set that is used to locate ships and airplanes. Which best describes what is

Svetach [21]

Well the chocolate bar may melt at the heat of the machine but why is there a chocolate bar there in the first place is my question xD

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3 years ago