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Harman [31]
3 years ago
11

What happens to the velocity of a sound wave in air if the temperature of the air increases

Physics
1 answer:
Vladimir79 [104]3 years ago
8 0

As sound travels because of collision of air particles vibrating randomly, increasing temperature of air increases the rate of this collision hence increasing the speed of sound travelling through the air.

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when electrical energy is used what type of energy is also produced and considered to be waste energy?​
Dima020 [189]

Answer:

<em>Thermal energy</em>

Explanation:

<u>Electrical Energy </u>

The electrical energy has been found to be an excellent resource to power our modern lifestyle. It can be produced in several ways including hydroelectrical plants, thermal plants, nuclear plants, solar panels, among many others. Each one of them converts different types of energy into electrical energy.

When converting to electrical energy, some equipment is needed, like generators, transformers, cables, circuit breakers, and every kind of devices with specific functions to have a good and safe electrical service. Each device has an internal resistance that opposes the flow of current. The resistances produce thermal energy as a result of current flowing through them. It's not possible to avoid this waste of energy, electrical engineers do their best to use better materials and configurations to reduce the thermal waste to a minimum.

8 0
3 years ago
Which choice shows the correct sequence of features formed by continued wave erosion?
attashe74 [19]

Answer:

Wave-cut cliff, sea arch, sea stacks

Explanation:

The effect of a wave erosion is made obvious by the structures formed by the wave action.

The high areas of land adjacent to the incoming wave develop the early features or the formation of wave action, which includes the <em>wave-cut cliff</em>

The continuous undercutting of the cliff by the wave results in the formation of the <em>wave cut platform</em>

The effect of the wave further on a cliff, results in the formation of a sea arch and finally a <em>sea stack</em>

Therefore, the correct sequence is the wave-cut cliff, sea arch, sea stacks

7 0
3 years ago
Three forces with magnitudes of 95 pounds, 75 pounds, and 146 pounds act on an object at angles 100°, 200°, and 300°, respective
VladimirAG [237]

Answer:

Explanation:

We shall represent all the forces in vector form .

Force of 95 pounds

F₁ = 95cos100 i + 95sin100j

= -16.5 i +93.55 j

force of 75 pounds

F₂ = 75cos200 + 75sin200j

= -70.47 i - 25.65 j

force of 146 pounds

F₃ = 146cos300 i + 146sin300j

= 73i -126.44 j

Resultant force

R = F₁+ F₂ + F₃

=  -16.5 i +93.55 j  -70.47 i - 25.65 j +73i -126.44 j

= -13.97 i - 58.54 j

Magnitude of R = √ ( 13.97² + 58.54² )

= 60.18

If Ф be angle of resultant with  axis

tanФ = - 58.54 / -13.97

Ф = 76.57 + 180 = 256.57 , because both  x and y components are negative. So the resultant will be in third quadrant.

7 0
3 years ago
How much heat is required to heat 0.1 g of ∆hvap =2260 j/g ∆h =340j/g fus iceat−30ctosteamat100c? use the approximate values?
Anestetic [448]
How much heat<span> is </span>required<span> to </span>heat 0.1 g<span> of </span>∆hvap<span> =</span>2260 j/g ∆h<span> =</span>340j/g fus iceat−30 ctosteamat 100c?use<span> the </span>approximate values<span>?</span>
7 0
3 years ago
Please help me answer these questions.
MA_775_DIABLO [31]
15. liquid
16. Shape
17. Volume
18. Shape
8 0
3 years ago
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