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Vaselesa [24]
3 years ago
5

Which factors affect absorption and reflection of thermal energy? Check all that apply.

Physics
2 answers:
BigorU [14]3 years ago
7 0

Answer:

Correct answer is A and C

Explanation:

Absoption of thermal energy is process of transferring energy from one source to other source. Absoption depends on the wavelength of the radiation it means it depends on color and texture of the material.

Reflection:

Reflection is a phenomena in which radiation is incident from one medium to the surface of other medium and it come back to the same medium without entering in other medium. It  depends on the wavelength of the radiation it means it depends on color and texture of the material

For example:

If you wore dark color cloths then you will feel hot because dark color absorb more heat similarly if you wore light cloth then you will not feel hot because light color reflects more radiation.

V125BC [204]3 years ago
4 0
A and C, The Color and Texture of the material. 
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Katarina [22]
One of the useful forns of the formula for electrical power is: Power = (voltage squared) / (resistance). Knowing that power is proportional to (voltage squared), we can see that if the voltage is reduced to 1/2, the power is reduced to 1/4 of its original value. The 220volt/60watt appliance, when operated on 110 volts, dissipates 60/4 = 15 watts.
3 0
3 years ago
If the mass of the object is doubled and the speed is halved then kinetic energy will change by a factor of:
madam [21]

Answer:

kinetic energy will change by a factor of 1/2

Option C) 1/2 is the correct answer

Explanation:

Given the data in the question;

we know that;

Kinetic energy = 1/2.mv²

given that mass of the object is doubled; m1 = 2m

speed is halved; v1 = V/2

Now, New kinetic energy will be; 1/2.m1v1²

we substitute

Kinetic Energy = 1/2 × 2m × (v/2)²

Kinetic Energy = 1/2 × 2m × (v²/4)

Kinetic Energy = 1/2 × m × (v²/2)

Kinetic Energy = 1/2 [ 1/2mv² ]

Kinetic Energy = 1/2 [ KE ]

Therefore; kinetic energy will change by a factor of 1/2

Option C) 1/2 is the correct answer

3 0
2 years ago
Plz answer the question
Vikentia [17]

Answer:

Ray A = Incidence ray

Ray B = Reflected ray

Explanation:

From the law of reflection,

Normal: This is the line that makes an angle of 90° with the reflecting surface.

Ray A is the incidence ray: This is the ray that srikes the surface of a reflecting surface. The angle formed between the normal and the incidence ray is called the incidence angle

Ray B is the reflected ray: This is the ray leaves the surface of a reflecting surface. The angle formed between the reflected ray and the normal is called reflected angle

3 0
3 years ago
Which of the following is a way earth’s water (hydrosphere) is directly affected by pollution?
ASHA 777 [7]

The toxic runoff from the farms will directly enters the water bodies of the earth through the drainage system.

The emissions from the cars will go into atmosphere and will react with water and then it will enter the earth's water. So, it is not directly affecting the earth's water.

The dumping trash on roadsides do not enter the earth's water. It can enter the earth's water through rains.

The production of oxygen by trees is not pollution.

Hence, option (A) is correct.

6 0
3 years ago
Some life forms move so slowly that their movement can not be detected by normal observation the best way to determine any movem
yaroslaw [1]

because the form can be watched over a long time for deviations from the mark.

like fingernails, the grow slowly too. after a time, they get clipped

6 0
3 years ago
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