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4 years ago

Climate change on the Earth is mostly caused by-

Physics

1 answer:

7nadin3 [17]4 years ago

4 0

Answer:

Option A

Burning of fossil fuels

Explanation:

The burning of fossil fuels such as coal, oil and gas releases greenhouse gases which when they accumulate in the atmosphere forms a thick layer which consequently interferes with the normal weather pattern. This is commonly known as climate change. Climate change leads to global warming whose effects include rise in the sea levels, flooding and other extreme phenomena. Therefore, the main cause of climate change on earth is the burning of fossil fuels

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4. Why is this a double replacement reaction?<br> HCl+Fes- FeCl+H2S

My name is Ann [436]

Answer:

the H from the HCl switched places with the Fe from the FeS.

6 0

3 years ago

Suppose two children push horizontally, but in exactly opposite directions, on a third child in a sled. The first child exerts a

anyanavicka [17]

Answer:

Please, read the anser below

Explanation:

1. In order to calculate the acceleration of the children you use the Newton second law for the summation of the implied forces:

$F_2-F_1-F_f=Ma$ (1)

Where is has been used that the motion is in the direction of the applied force by the second child

F2: force of the second child = 92N

F1: force of the first child = 79N

Ff: friction force = 5.5N

M: mass of the third child = 24kg

a: acceleration of the third child = ?

You solve the equation (1) for a, and you replace the values of the other parameters:

$a=\frac{F_2-F_1.F_f}{M}=\frac{96N-79N-5.5N}{24kg}=0.48\frac{m}{s^2}$

The acceleration is 0.48m/s^2

2. The system of interest is the same as before, the acceleration calculated is about the motion of the third child.

3. An image with the diagram forces is attached below.

4. If the friction would be 150N, the acceleration would be zero, because the friction force is higher than the higher force between children, which is 92N.

Then, the acceleration is zero

3 0

3 years ago

So what would the answer for D be?

Mademuasel [1]

For what, exactly? XD

8 0

4 years ago

PY85

aliya0001 [1]

Answer:

460 g

Explanation:

Heat lost by the warm water = heat gained by the cold water

-mCΔT = mCΔT

-m (4.184 J/g/K) (37°C − 85°C) = (1000 g) (4.184 J/g/K) (37°C − 15°C)

-m (37°C − 85°C) = (1000 g) (37°C − 15°C)

-m (-48°C) = (1000 g) (22°C)

m = 458 g

Rounded to two significant figures, you need a mass of 460 g of water.

3 0

3 years ago

If the wavelength is doubled what happens to the period

Temka [501]

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Explanation:

3 0

3 years ago