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Darya [45]
3 years ago
14

How does the sun keep the earths surface warm

Physics
1 answer:
Elan Coil [88]3 years ago
5 0

Answer:

The sun heats the earth through radiation. Since there is no medium  in space, radiation is the primary way that heat travels in space. This heat transfer is called conduction

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The brief wave of positive electrical charge that sweeps down the axon is _____.
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A load of 500 N is placed 8 N from the pivot what is the turning moment of the load
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4 years ago
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andriy [413]

Answer:

c

Explanation:

3 0
3 years ago
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If a series circuit contains a 12-V battery, a 6-ohm resistor, and a 4-ohm resistor, what is the current in the circuit?
Shalnov [3]

In a series circuit the total current is the same throughout resistors and so:

I_{total}=I_1=I_2

The voltage is distributed throughout the resistors and so:

V_{total}=V_1+V_2

and the total resistance can be calculated by adding up the resistors resistance:

R_{total}=R_1+R_2

First thing is to calculate the total resistance and so:

R_{total}=6\Omega + 4\Omega = 10\Omega

And by Omh's law V=IR we have:

V_{total}=I_{total}R_{total}\\\\I_{total}=\frac{V_{total}}{R_{total}}= \frac{12V}{10\Omega} =1.2A

And so the total current of the circuit is 1.2 amps i.e. 1.2 A.


6 0
3 years ago
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In a uranium fission reaction, uranium splits into two smaller atoms and energy. Where did the energy come from?
postnew [5]

Answer: C. Some of uranium's mass is converted into energy, so the smaller atoms have less mass.

Explanation:

From Einstein's mass-energy relation:

E = mc²

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When Uranium atoms under go nuclear fission, smaller atoms are formed and huge amount of energy is released. This energy comes from the mass difference of the uranium nuclei and new nuclei formed. This mass converted into energy according to Einstein's equation.

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3 years ago
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