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PolarNik [594]
2 years ago
12

A red card is illuminated by red light. Part A What color will the card appear? What color will the card appear? a. Red b. Black

c. White d. Green
Physics
1 answer:
Wewaii [24]2 years ago
4 0
Red light reflects off the card into your eyes and you see the red card as red. The light will just make the card brighter. So A
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Why do bones weaken as a person gets older
Sonbull [250]

Answer:

The bones aren't as strong as a younger person, because an older person, ages due to time and it also depend on what they do in their past.

Does this help? ^-^"

6 0
2 years ago
Glass absorbs ultraviolet (UV) rays from the Sun. Would a fraction of the incident UV light be reflected from the air/glass boun
fiasKO [112]

Answer:

Yes

Explanation:

Any transparent surface in practical is neither a perfect absorber of electromagnetic waves neither a perfect reflector. Generally all the transparent surfaces reflect some amount of irradiation and the other parts are absorbed and transmitted.

<u>That is given by as relation:</u>

\alpha+\rho+\tau=1

where:

\alpha= absorptivity which is defined as the ratio of the absorbed radiation to the total irradiation

\rho= reflectivity is defined as the ratio of reflected radiation to the total irradiation

\tau= transmittivity is defined as the ratio of total transmitted radiation to the total irradiation

6 0
3 years ago
Assume a nation's nominal GDP is $5 trillion with an inflation rate of 5%. find its real GDP. PLEASE HELPPPPPPPPPPPPPPPPPPPPP
erastova [34]

Answer:

I don't know

Explanation:

But if you need help or reference America's GDP is 19.8 trillion dollars it spends over 2 to 3 percent of its budget on the military and the military's budget is 250 billion dollars

PS: sorry if the reference didn't help and if this doesn't help write dow the problem and download PHOTO MATH take a picture and buala and if you need to show your work just click on the button that says brake down problem and it'll show you and teach you the steps

7 0
3 years ago
Which process requires the addition of energy to water?
Taya2010 [7]

Water must absorb energy in order to melt, evaporate, or get warmer.

3 0
2 years ago
A container with rigid walls is filled with 4.0 mol of air with Cv=2.5R Then the temperature is increased from 17 degrees C to 3
galina1969 [7]

Explanation:

Internal energy = heat + work

U = Q + W

Since there's no change in volume (rigid walls), W = 0.

U = Q

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U = 28,000 J

3 0
3 years ago
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