Which energy conversion takes place when a solar cell is used to light a street lamp?

Physics

1 answer:

allsm [11]3 years ago

8 0

Answer:

the answer is for the question is B

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What is an object that allows some electrons to go through it

Katen [24]

Answer:

generator?

Explanation:

im not sure about it

6 0

3 years ago

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Which formulas might be used to find the velocity based on a position-time graph?

Alex787 [66]

The formula to get the velocity is V=D/T. First you need to determine the distance and time at a certain point and plug it into the equation and that will be your velocity at that point. To get it between two points you complete the directions two times and find the average or use the slope formula, slope = rise/run; slope = (y2 - y1) / (x2 - x1).

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4 years ago

Reading glasses of what power are needed for a person whose near point is 125 cm , so that he can read a computer screen at 54 c

Burka [1]

Answer:

1.11 dioptre

Explanation:

$d_{i}$ = Distance of the image = - (125 - 2) = - 123 cm

$d_{o}$ = Distance of the object = 54 - 2 = 52 cm

$f$ = Focal length of the lens

Using the equation

$\frac{1}{d_{o}} + \frac{1}{d_{i}} = \frac{1}{f}$

$\frac{1}{52} + \frac{- 1}{123} = \frac{1}{f}$

$f = 90.1$ cm

Power of the lens is given as

$P = \frac{100}{f}$

$P = \frac{100}{90.1}$

$P = 1.11$ Dioptre

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3 years ago

Two identical balls each have a mass of 35.0 grams and a charge of . The balls are released from rest when they are separated by

OlgaM077 [116]

The given question is incomplete. The complete question is as follows.

Two identical balls each have a mass of 35.0 grams and a charge of q = 3.50 \times 10^{-6}C[/tex]. The balls are released from rest when they are separated by a distance of 6.00 cm. What is the speed of each ball when the distance between them has tripled? Use k = $9.00 \times 10^{9} Nm^{2}/C^{2}$ .