Which of the following materials is able to absorb large amounts of energy without changing temperature very much? A. air B. concrete C. water D. soil

Answers

Answer 1

Answer: Which of the following materials is able to absorb large amounts of energy without changing temperature very much?

Answer: Out of all the options presented above the one that represents the material that is able to absorb large amounts of energy without changing temperature very much is answer choice C) Water.

I hope it helps, Regards.

Answer 2

Answer:

Answer : The correct option is water.

Explanation :

Water has an ability to absorb large amount of energy without changing temperature very much.

This shows the specific heat of water is high. It is approximately equal to $4.186\ J/g\ ^0C$ .

The specific heat of air is $1.005\ J/g\ ^0C$ .

The specific heat of concrete is $0.0880\ J/g\ ^0C$ .

The specific heat of soil is $1.480\ J/g\ ^0C$ .

So, the correct option is (C) " water ".

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The resultant resistance of two resistance wires in series combination is 108 ohm and in parallel combination is 24 ohm. find the value of individual resistance.

Answers

Call the two resistors 'x' and 'y'.

In series, the resultant resistance is their sum: x + y = 108
Notice that y = 108 - x. I think we'll use that very soon.

In parallel, the resultant resistance is (their product) / (their sum) = xy/108 = 24

Multiply each side by 108:

xy = 2,592

Substitute for 'y' :

x(108 - x) = 2,592

108x - x² = 2,592

-x² + 108x - 2,592 = 0

x² - 108x + 2,592 = 0

Use the quadratic formula to find:

x = 72 . . . then y = 108 - 72 = 36
or
x = 36 . . . then y = 108 - 36 = 72

The individual resistors are 36Ω and 72Ω .

How does the current values in and out of the battery compare to the sum of currents going through the light bulbs?Note: This is for Parallel circuits.

Answers

The current values in and out of the battery is going to be equal to the sum of the currents going through the light bulbs. In a parallel circuit, the current is divided as it enters different branches and light bulbs. However, the amount of current leaving the battery is always going to be the same as the amount of current entering the battery. Therefore, while current divides in a parallel circuit, the total amount of current always remains the same.

What is the maximum temperature in a hot whirlpool to be considered safe?

Answers

Answer:

104 degrees

Never let the hot tub's water temperature get above 104 degrees Fahrenheit. For a healthy adult, a temperature of 100 degrees is regarded as safe. Young kids should use extra caution.

Advantages and disadvantages of solar energy

Answers

Advantages
-renewable
-emissionless
-reduces distance required for electricity to travel
- can be produced effectively on small scale

Disadvantage
-No continual supply-doesnt function on cloudy days or at nightime
-expensive
-inefficient, best solar panels today are only 40% efficient, most are worse

what velocity must a 1340kg car have in order to have the same momentum as a 2680kg truck traveling at a velocity of 15 m/s to the west

Answers

IR = Q

Q = m . v

Qtruck = 2680 . 15

Qt = 40.200 kg . m/s

Then,

Qcar = Qt

m . V = 40 . 200

1340 . V = 40.200

V = 40 . 200 / 1340

V = 30 m / s

Calculate the average force that must be exerted on a 0.145 kg baseball in order to give it an acceleration of 130 m/s2.

Answers

Answer:

F = 18.9 N

Explanation:

m = 0145 kg

a = 130 m^2

F = ma = (0.145kg)(130m/s^2) = 18.9N

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