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maw [93]
3 years ago
14

How does the stratosphere protect us?

Physics
1 answer:
Rudik [331]3 years ago
4 0
<span>It acts as a sunscreen to </span>protect us<span> against UV radiation. </span>
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How is energy measured?​
stepladder [879]

Because a Btu is so small, energy is usually measured in millions of Btus. 1 Btu = the amount of energy required to increase the temperature of one pound of water (which is equivalent to one pint) by one degree Fahrenheit. This is roughly the heat produced from burning one match.

<em>https://www.ucsusa.org/clean_energy/our-energy-choices/how-is-energy-measured.html</em>

5 0
3 years ago
A 30.0-kg child sits on one end of a long uniform beam having a mass of 20.0 kg, and a 40.0-kg child sits on the other end. The
qaws [65]

let the length of the beam be "L"

from the diagram

AD = length of beam = L

AC = CD = AD/2 = L/2

BC = AC - AB = (L/2) - 1.10

BD = AD - AB = L - 1.10

m = mass of beam = 20 kg

m₁ = mass of child on left end = 30 kg

m₂ = mass of child on right end = 40 kg

using equilibrium of torque about B

(m₁ g) (AB) = (mg) (BC) + (m₂ g) (BD)

30 (1.10) = (20) ((L/2) - 1.10) + (40) (L - 1.10)

L = 1.98 m

4 0
3 years ago
The weight of an object is the force generated by Earth's gravity accelerating the object's _________. distance mass time destin
julsineya [31]
The weight of an object is the force of gravity between Earth's
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The forces of gravity always come in equal, opposite pairs. 
The Earth's weight on the object is the same as the object's
weight on the Earth, and when the object falls to Earth, Earth
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4 0
3 years ago
What two factors are a part of thermohaline circulation
Margarita [4]

Answer:

These deep-ocean currents are driven by differences in the water's density, which is controlled by temperature (thermo) and salinity (haline). This process is known as thermohaline circulation.

Explanation:

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3 years ago
In which situation will the lowest resistance occur?
insens350 [35]

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thick wire and cold temperatures

8 0
3 years ago
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