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trapecia [35]
3 years ago
12

State the relation between the joule and kilocalories.

Physics
2 answers:
Oksanka [162]3 years ago
8 0

Answer:

The relationship between calorie and joule are proportionate. Which implies, the calorie is directly proportional to the joule. That means-

When the value in terms of calorie increases, its corresponding value in joules also increases at a rate of 4.2.

When the value in terms of calorie decreases, its corresponding value in joules also decreases at a rate of 4.2.

  1. a calorie is the unit of energy.
  2. Calorie or kilocalorie is the unit of energy = 1000 calories.
  3. Joule is the unit of energy
  4. Kilojoule is the unit of energy, = 1000 joules.

RideAnS [48]3 years ago
5 0

Explanation:

1 Kilocalories = 4,184 Joules

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sergey [27]

Answer:

1) Speed in m/s equals 22.22 m/s.

2) Speed in miles per hour equals 49.712 mph.

Explanation:

Since we know that in 1 kilometer there are 1000 meters and in 1 hour there are 3600 seconds hence we can write

80km/h=\frac{80\times 1000m}{3600s}=22.22m/s

Now we know that 1 mile equals 1.609 kilometer  hence we conclude that 1 kilometer equals \frac{1}{1.609}=0.6214mile

Hence

80km/h=\frac{80\times 0.6214miles}{1h}=49.712mph

3 0
4 years ago
find the mass of a ball on a roof 30 meters high, if the ball's gravitational potential energy is 58.8 joules
Sidana [21]
We are given the gravitational potential energy and the height of the ball and is asked in the problem to determine the mass of the ball. the formula to be followed is PE = mgh where g is the gravitational acceleration equal to 9.81 m/s^2. substituting, 58.8 J = m*9.8 m/s^2 * 30 m; m = 0.2 kg.
3 0
3 years ago
Read 2 more answers
Which model is a modification of the process you see taking place in the stars?
maria [59]

Answer: The answer is C

Explanation:

i did it on usatestprep :)

7 0
3 years ago
Uma chapa metálica, com um furo central de diâmetro "d", é aquecida dentro de um forno. Com o aumento da temperatura, podemos af
Tatiana [17]

Answer:  O furo diminui enquanto a chapa aumenta a sua dimensão.

(The diameter decreases and the dimensions of the metal increases)

Explanation:

I will answer in English:

Here we have a piece of metal with a small hole on it, that is heated in a hoven.

We know that when a piece of metal is heated, it will expand (the density decreases, so the dimensions of the piece of metal increase).

Now, particularly, the hole will also expand but inwards, as each "extreme" of the piece of metal, will expand into where it has less resistance, so it will expand in the region where there is no material. This "inwards" expansion is why the diameter of the hole will decrease.

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3 years ago
Why echo sound cannot be heard in small room
Art [367]
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7 0
3 years ago
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