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hodyreva [135]
3 years ago
11

A compass needle points north when let it move freely. why do scientist think this happened?​

Chemistry
1 answer:
bezimeni [28]3 years ago
4 0

Answer:

because of...

Explanation:

The earth's magnetic field.

(i dont know if that is what youre looking for, but that is what i know.... hope it helps!!!)

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Determine if the equation is endothermic or exothermic examples
Fittoniya [83]
There are a couple of ways todetermine if a reaction is exothermic or endothermic. Endothermic meaning that heat is added to the reaction to make the reactants interact and exothermic meaning heat is released during the reaction between the two reactants.


In endothermic reactions you can find a triangle above the arrow.
6 0
3 years ago
Which is a substance that could be found in air, water, or soil that is harmful to humans or animals? carbon dioxide fossil fuel
quester [9]
Hi!

The substance that could be found in air, water or soil that is harmful to humans or animals is called pollutant.

Pollutants are the only harmful substances that can be found in these three places. Carbon Dioxide (CO₂) is commonly found in the air, fossil fuels are found in soil and water and smog is found in the air. Only pollutant can be found in these three places as there are varied in its chemical structure. Common pollutants include Sulfur Dioxide (SO₂) which can be found in the air, and Lead, which can be found in water or soil.

Have a nice day!
4 0
3 years ago
Sn=0.14 (E) <br>Sn+2 = -0.15(E) <br>Which form of tin is the stronger reducing agent? OS O Sn +2? ​
fomenos

0.14

Explanation:

I just needed to finish setting up my account

3 0
2 years ago
1.0 x 10^2 m what is the frequency of the waves
MAVERICK [17]

Answer:

f = 3 × 10⁶ Hz

Explanation:

Given data:

Wavelength of wave = 1.0 ×10² m

Frequency = ?

Solution:

Formula:

Speed of light = wavelength× frequency

Frequency = speed of light / wavelength

speed of light = 3× 10⁸ m/s

f = 3× 10⁸ m/s / 1.0 ×10² m

f = 3 × 10⁶ s⁻¹

s⁻¹ = Hz

f = 3 × 10⁶ Hz

8 0
3 years ago
PLEASE HELP WILL MARK BRAINLIEST
MAXImum [283]

Answer:

1 is b and 2 is d

Explanation:

because you do not know that the cat had done that you was just thinking it was the cat

4 0
3 years ago
Read 2 more answers
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