PHYSICS MIDDLE SCHOOL

Which of these activities increases the amount of carbon in the atmosphere?

Answers

Answer 1
Answer:

What are the choices

Answer 2
Answer:

Answer: Burning of fossil fuels.

Explanation:

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WHAT IS THE IMPORTANCE OF THE TROPIC OF CANCER AND TROPIC OF CAPRICORN

Answers

The tropic of cancer and tropic of capricorn has inportance in geographical studies. They help to divide the oceans. They help to classify different countries ( as lying in and around of either of the zones). On classifying, we can also predict weather or atmospheric pressure over the country ( with respect to tropic of cancer or tropic of capricorn). Thus, it has important role in geography. 
they help the divide the world and describe the difference in weather patterns

if you use the compound pulley, you will need to pull twice the distance but with less force. the force you need is equal to one half the weight of the box plus 25 N. what is the force needed?

Answers

Answer:

F= 25/2 = 12.5N

Explanation:

When you use a compound pulley the force required depends on the mechanical advantage of the compound pulley. This is known as rate of loss of distance or the ratio of the force to the load.

M.A = Effort distance /Load distance. OR M.A = Load/Effort

Help with just the ones that are not filled in pls

Answers

For question 5: the solute is the stain and the solvent is the alcohol

6. Sugar is the solute and tea is the solvent

7. The tea leaves in the tea bag is the solute and the water is the solvent

General rule is that the solute is the one that needs to be dissolved and the solvent is the one that dissolves the solute. Hope its clear

Atoms from which two elements would form ionic bonds

Answers

Answer:

Explanation:

Ionic bonds are formed by transfer of electrons between metal and non metals. Electronic configuration of calcium: Calcium atom will lose two electron to gain noble gas configuration and form calcium cation with +2 charge.

hope this helps

How wide is the moon

Answers


The moon is very nearly a sphere (ball shape).  We usually talk
about the "diameter" of a sphere, not its width. 

The moon's diameter is about  2,159 miles or 3,475 kilometers. 
That's about  27% (a little over a quarter) of the Earth's diameter.
14.6 million square miles (38 square kilometers

Is cycles per second a measurement of how fast the sound travels to the ear

Answers

No. It's just the number of waves that flow into your ear ... or past any other point ... in one second. The shorter each wave is, the more of them fly by every second.
Cps (cycles per second) is the measure of how frequently an alternating current changes direction. This term has been replaced by the term hertz (Hz).
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