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ratelena [41]
3 years ago
15

How much heat is required to raise the temperature of 0.25 kg of water from 20°C to 30°C

Physics
1 answer:
pentagon [3]3 years ago
3 0

Answer:

10500 J/kg/*C

Explanation:

Quantity of heat required=mass of substance x specific heat capacity x change in temperature

Quantity of heat required=0.25 x 4200 x [30-20]

Quantity of heat required=0.25 x 4200 x 10

Quantity of heat required=10500 J/kg/*C

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Answer:

a) the strong magnetic field inhibits the currents of hot gas rising from below.

Explanation:

Sunspots are dark because they are a little cooler than the photo sphere.

The magnetic field inhibits the strong rising currents of hot gas,allowing it to cool the surface.

4 0
3 years ago
If temperature increases, then pressure __________.
lilavasa [31]
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Which of the following is most likely not a case of uniform circular motion
Ivan

Answer:

Motion of a racing car on a circular track

Explanation:

Uniform circular motion means the motion of the object is in a circle with a CONSTANT SPEED.

The racing car will accelerate during its motion. Hence, it is not a uniform circular motion.

7 0
3 years ago
light waves are first transmitted through the ________ at the front of the eye and enter an opening called the ________ before s
viva [34]

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  • Then both the cornea and the lens give room for the focusing of the light rays to the retina which is situated at the back of the eye .
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Therefore, light wave are form of tiny microscopic particles.

brainly.com/question/19734585?referrer=searchResults

8 0
2 years ago
Upthrust given by Water to the body
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