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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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When you float an ice cube in water, you notice that 90% of it is submerged beneath the surface. Now suppose you put the same ic

Kruka [31]

Answer:

more than 90%

Explanation:

In the unknown liquid the buoyant force and weight relation is

$V\rho_lg=mg\\\Rightarrow V\rho_l=m$

It can be seen that if the density decreases the buoyant force decreases.

If the object is already 90% submerged in water then, if the other liquid has density less than that of water the object will be submerged more than 90%.

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3 years ago

What happens to momentum when two objects collide

Lostsunrise [7]

Answer:

The sum of momenta of each object before and after collision is equal . Thus when they collide , their momentum will change but its sum will be sane as the sum of the momentum before collision

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3 years ago

How much energy has 4×10^10m^3 of water collected in a reservoir at a hight of 100 m from the power house ?What kind of energy i

sveticcg [70]

Answer:

PE = 3.92x10^16J

potential energy

Explanation:

PE = m*g*h

mass of water = 1000kg/m³

(4*10^10m³)*1000kg = 4*10^13kg

PE = (4*10^13kg)*(9.81m/s²)*(100m)

PE = 3.92x10^16J

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3 years ago

A frictionless toy car is placed on a ramp, which is inclined at an unknown angle with respect to the horizontal. Starting from

NikAS [45]

The final speed of the toy car at the end of the given time period is 3.58 m/s.

The given parameters;

distance traveled by the car, s = 1.2 m
time of motion of the car, t = 0.67 s
initial velocity of the car, u = 0

The acceleration of the car is calculated as;

$s = ut + \frac{1}{2} at^2\\\\1.2 = 0 + 0.5\times a\times (0.67)^2\\\\1.2 = 0.225a\\\\a = \frac{1.2}{0.225} \\\\a = 5.33 \ m/s^2$

The final velocity of the toy car is calculated as;

$v_f^2 = u^2 + 2as\\\\v_f^2 = 0 + 2\times 5.33 \times 1.2\\\\v_f^2 = 12.792\\\\v_f = \sqrt{12.792} \\\\v_f = 3.58 \ m/s$

Thus, the final speed of the toy car at the end of the given time period is 3.58 m/s.

Learn more here: brainly.com/question/20352766

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2 years ago

Five race cars speed toward the finish line at the Jasper County Speedway. The table lists each car’s speed in meters/second. If

nekit [7.7K]

We have: v = d/t
From the expression, we conclude speed is indirectly proportional to speed.
So, the car which will take longer time must have the smallest speed. Among all the options Car C has the smallest speed. So, it would be your answer.

In short, Your Answer would be Option C) Car C will take longer time than any other.

Hope this helps!

6 0

3 years ago

Read 2 more answers

Two advantages of solar energy over energy from Fossil fuels​

Two advantages of solar energy over energy from Fossil fuels