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3 years ago

Two advantages of solar energy over energy from Fossil fuels

Physics

2 answers:

ZanzabumX [31]3 years ago

7 0

Answer:

(1) solar energy is renewable

(2)solar energy produce clean energy

Explanation:

(1) solar energy is renewable:solar energy are naturally and easily replenished as they are being used, meanwhile fossil doesn't replace itself naturally,it get depleted easily

(2)solar energy produce clean energy: fossil fuels has to be burned to produce energy,and when they are burned they give out toxic gases(carbon(IV)oxides, carbon (II)oxides)which are harmful to man.too much carbon(IV)oxide in the atmosphere can lead to global warming, while breathing in carbon(II)oxides is very bad for our health

Law Incorporation [45]3 years ago

3 0

Answer:

1)Fuel Sourcing

2)Power Generation

Explanation:

1)Fuel Sourcing : Fossil fuels must be located, excavated and transported before they can be used. These processes are invasive and detrimental to the land through side effects such as erosion as well as ecological and geologic instability. Then the deposit or well is depleted. Energy from the sun is infinite and free. It can be harnessed and turned into power anywhere a solar panel can be mounted.

2)Power Generation: Fossil fuels must be burned to produce electricity. Burning them creates unwanted byproducts that can create air and water pollution and release huge amounts of greenhouse gasses into the atmosphere.

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Which statement describes a characteristic of a question that can be answered through scientific inquiry? A. It can be answered

saw5 [17]

Answer:

the correct one is D

Explanation:

A question that can be answered with a scientific investigation must be a question where measurements of some kind can be made and with these measurements check that the question is correct or not.

When examining the answers the correct one is D

7 0

3 years ago

When you look at yourself in a convex mirror, you appear to be ¼ your actual size. If you are standing 1.0 m in front of the mir

Nookie1986 [14]

Answer:

The focal length is $f = -0.2 \ m$

The radius of curvature is $R = -0.4 \ m$

Explanation:

From the question we are told that

The magnification of the mirror is $m = \frac{1}{2}$

The distance of the person from the mirror(the object distance ) is $u = - 1.0 \ m$

The negative sign shows that it is been placed in front of the mirror

Generally the magnification of the mirror is mathematically represented as

$m = \frac{v}{u}$

=> $\frac{1}{4} = \frac{v}{-u}$

=> $v = \frac{- 1}{4}$

Generally from the lens equation we have that

$\frac{1}{f} = \frac{1}{u} + \frac{1}{v}$

=> $\frac{1}{f} = \frac{1}{-1 } + \frac{1}{-\frac{1}{4} }$

=> $f = -0.2 \ m$

Generally the radius of curvature is mathematically represented as

$R = 2 * f$

=> $R = 2 * - 0.2$

=> $R = -0.4 \ m$

8 0

3 years ago

In Europe the standard voltage in homes is 220 V instead of the 120 V used in the United States. Therefore "100-W" European bulb

Maslowich

Explanation:

In Europe the standard voltage in homes is 220 V instead of the 120 V used in the United States.

100-W European bulb would be intended for use with a 220-V potential difference.

(a) If V = 220 V and P = 100 W

Power :

$P=\dfrac{V^2}{R}\\\\R=\dfrac{V^2}{P}\\\\R=\dfrac{(220)^2}{100}\\\\R=484\ \Omega$

If you bring a "100-W" European bulb home to the untied States, what should be its US power rating. So,

$P=\dfrac{V^2}{R}\\\\P=\dfrac{(120)^2}{484}\\\\P=29.75\ W$

P = 29.8 watts

(b) Let I is the current will the 100-W European bulb draw in normal use in the United States. So,

$I=\dfrac{V}{R}\\\\I=\dfrac{120}{484}\\\\I=0.248\ A$

Hence, this is the required solution.

3 0

3 years ago

Read 2 more answers

A car with an initial speed of 31.4 km/h accelerates at a uniform rate of 1.2 m/s2 for 1.3 s. What is the displacement of the ca

Kaylis [27]

Answer:

21.5 m

Explanation:

A car has an initial speed of 31.4 km/hr

Convert to m/s

= 31.4 × 1000/3600

= 31,400/3600

= 8.722 m/s

Acceleration = 1.2 m/s^2

Time= 1.3 seconds.

Therefore the displacement can be calculated as follows

S= 8.722 × 1.3 + 1/2 × 1.2 × 1.3^2

= 11.34 + 1/2 × 20.28

= 11.34 + 10.14

= 21.5 m

5 0

3 years ago

if a student wanted to design an experiment that uses sound scientific principles, which of the following should he or she not d

nikklg [1K]

Things he should do
1) Take several readings.
2) And find the average of the readings to get the accurate value.
Things should not do
1) Avoid human error.
2) Zero error

4 0

3 years ago

Two advantages of solar energy over energy from Fossil fuels​

Two advantages of solar energy over energy from Fossil fuels