Oo hi granger ru online here i have a doubt in physics .

Explain how a higher temperature affects the efficiency of transmitting electricity

Slav-nsk [51]

Increasing ambient temperature decreases efficiency and load carrying capacity of electric transmission lines.
Increased molecular movement in the conductors as temperature rises, increases resistance to current flow.

6 0

3 years ago

a ray of light strikes a plane mirror at an angle of 53 degrees to the normal. what is the angle of reflection?

Alexxx [7]

So for an incident rag from vacuum to a medium with n=1.6, and an incident angle of 53 degrees, the the angle of refraction will be .

4 0

3 years ago

The eyes of many older people have lost the ability to accommodate, and so an older person’s near point may be more than 25 cm f

tensa zangetsu [6.8K]

Answer:

Smaller refractive power

Explanation:

The refractive power of an eye is the extent to which it can converge or diverge the light rays.

Near point is the the closest point for an eye such that when an object is placed at that point the image it forms is sharp and clearly visible to the eye.

A the person ages, the ciliary muscles of the eyes weakens and as a result the lens contracts and the formation of the image takes place behind the retina instead of forming at the retina.

Thus the near point also increases and the refractive power becomes smaller.

4 0

3 years ago

A resistor resists the flow of electricity and usually converts electrical energy to heat energy. True or False?

Sidana [21]

Your answer is: True!

7 0

4 years ago

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The wheelchair starts from rest. It accelerates at a constant rate until it has a speed of 1.5 m/s. The wheelchair travels a dis

anastassius [24]

<h2>Answer:-</h2>