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Tcecarenko [31]
3 years ago
13

How does solar energy produce electricity?

Physics
1 answer:
elena-14-01-66 [18.8K]3 years ago
8 0
By the use of "Solar cells" or "Solar panel", we can trap solar energy in silicon/germanium rods, then we can convert in into electricity too.

Hope this helps!
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7. The movement of water molecules from an area of high concentration to an area of low concentration is
seropon [69]
The movement of water molecules from higher to lower concentration is osmosis.
6 0
3 years ago
In an experiment, the explanation of the expected outcome, based on research, is the _______________.
vladimir1956 [14]
C. Hypothesis
The hypothesis is presented as an explanation of the observed results.
7 0
3 years ago
What average net force is required to stop a 3.5 kg bowling ball initially travelling at a speed of 1.5 m/s over a distance of 0
raketka [301]

First the aceleration:

Vf² = Vo² - 2ad

a = (Vf² - Vo²) / 2d

a = (0 m/s)² - (1,5 m/s)²) / 2 * 0,4 m

a = -2,25 m²/s² / 0,8 m

a = -2,81 m/s²

Now, for the net force, use 2nd law of Newton:

F = ma

F = 3,5 kg * (-2,81 m/s²)

F = -9,835 N

The force for stop the bowling ball is <u>-9,835 Newtons.</u>

7 0
3 years ago
Urgent help for a physics exercise!
Zigmanuir [339]

a)

Amplitude of wave is given as maximum displacement from mean position

So here amplitude is 1.25 cm

b)

Wavelength is the length of the wave that it travels in one time period

From graph we can say the wavelength is given as 3cm

PART C)

Time period of wave is the time after which it repeats its shape

Speed of the wave = 21 cm/s

time period = wavelength / speed

T = \frac{3}{21}

T = \frac{1}{7} s

Now frequency is

f = \frac{1}{T}

f = 7 Hz

PART D)

Time period = \frac{1}{f}[/tex]

T = 0.143 s

6 0
4 years ago
What are 5 examples of balanced and unbalanced forces in your home?
ryzh [129]
Balance:
a book resting on a table
a car driving at 10 miles per hour in constant velocity
a cat sitting on a chair
a bulb that attach to the ceiling 
your grandma sleeping on a bed
Unbalance:
your brother sprinting across the kitchen
a ball rolling at 5 m/s^2 
your mom trying to run at 2 m/s^2 to spank you 
you dropping your coffee mug on a floor
a cat jumping out of your bed
a tear from your eye falling through the floor
Hope this helps
8 0
4 years ago
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