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3 years ago

Why the sun emits most of its energy in the form of visible light?

Physics

1 answer:

I am Lyosha [343]3 years ago

8 0

Human eye could perceive this visible light and used it to look at the objects.

<u>Explanation: </u>

There are 3 forms of radiation emitted by the sun. They are Infrared radiation, Ultra Violet radiation as well as visible radiation.

Visible light is the type of light can perceive by the human eye and utilizes to see the objects.

Since the sun is hotter (5800 K) than the earth, it emits mostly the radiation energy in the form of this visible light.

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Is kane brown a true country singer?<br> A.yes<br> B.no

Kryger [21]

Answer: hes not a country singer if thats what your asking

Explanation:

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3 years ago

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A 100 Ω resistive heater in a tank of water (1kg) increases its temperature from 10°C to 20°C over a period of 1 hour. During th

Nookie1986 [14]

Answer:48.52 kJ

Explanation:

Given

Resistance $=100 \Omega$

temperature increases from $10^{\circ}C to 20^{\circ}C$

Voltage=50 V

Heat given(H) $=\frac{V^2t}{R}$

Where V=voltage applied

t=time

R=Resistance

$H=\frac{50^2\times 60\times 60}{100}=90 kJ$

Heat absorbed by water is

$Q=mc(\Delta T)$

where

m=mass of water

c=specific heat of water

$\Delta T$ =change in temperature

$Q=1000\times 4.184\times (20-10)=41.48 kJ$

Therefore 90-41.48=48.52 kJ is not absorbed by water and leaves the system into the surroundings.

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3 years ago

Which energy resources are found above the Earth's surface

never [62]

Answer: the sun

Explanation:

The sun's radiant energy reaches the earth's surface either directly through radiation, indirectly through convection, or it can move "across" or "through" objects or materials on the surface via conduction. Let's look more closely at each case. We've probably experienced the feeling of "warmth" of the sun on our skin on a sunny day. Light energy from the sun is reaching us across space and down through the atmosphere through radiation. A dark colored vehicle in the sun quickly becomes warm (or hot!) to the touch because of radiation. The light energy from the sun heats the air in the earth's atmosphere, and this drives convection and transfers thermal energy around. It is possible that we've felt a "hot breeze" on our skin on sunny days. The thermal energy in the air will be carried to objects in its path, and it will warm them.

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3 years ago

Look at the diagram. Emily needs to complete the circuit. What two points should be connected to complete the circuit and make t

pogonyaev

Answer:

The points 2 and 4 should be connected.

Explanation:

To complete the circuit, we need to connect the two points which when connected, encompass the battery and the bulb in the circuit. The points 2 and 4 do the job, since they connect the terminal of the battery and the terminal of the bulb, and thus complete the circuit.

Therefore, the choice C is correct.