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butalik [34]
2 years ago
11

30. A force is exerted on a box and an equal and opposite force is exerted by

Physics
1 answer:
sertanlavr [38]2 years ago
5 0

<em>Newtons</em><em> </em><em>third</em><em> </em><em>law</em><em> </em><em>of</em><em> </em><em>motion</em>

Explanation:

According to Newtons third law of motion: Every action has an equal and opposite reaction.

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How much heat is needed to change the temperature of 3 grams of gold (c = 0.129 ) from 21°C to 363°C? The answer is expressed to
madam [21]

The correct answer to the question is : B) 132 Joules.

EXPLANATION :

As per the question, the mass of the gold m = 3 gram.

The initial temperature of the gold T = 21 degree celsius.

The final temperature of the gold  T' = 363 degree celsius.

Hence, the change in temperature  dT = T' - T

                                                          = 363 - 21 degree celsius

                                                          = 342 degree celsius.

The specific heat of the gold is given as c = 0.129\ J/g^0C

We are asked to calculate the heat required ( dQ ) to raise the temperature of gold.

The heat required for this is calculated as -

                                   dQ = mcDT

                                         = 3 × 342 × 0.129 J

                                         = 132.354 J

                                         ≈ 132 J

Hence, the correct answer is 132 J.

8 0
3 years ago
Read 2 more answers
I have a question to whoever can tell me (10 points)
Step2247 [10]

you may just select the word answer and then without cutting it u may start to type ur answer then it will be in bold letter

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4 0
3 years ago
A laser emits a light beam with a wavelength of 630 nm. The jet passes a liquid with a refractive index of 1.3.
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The wavelength of the laser beam in the liquid is 517 nm

Brainliest?
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The periodic table is an arrangment of the chemical elements, ordered by atomic number, into families, and by doing so illustrat
Gala2k [10]

Answer:

Solid at room temperature

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Since these elements are metals they must be said at room temperature

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7) The acceleration due to gravity near the surface of Mars is about one-third of the value
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C) three times slow than on earth

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