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taurus [48]
3 years ago
11

What colour would a bunch of green grapes be in red light? Why?

Physics
1 answer:
Temka [501]3 years ago
7 0

Answer:

they'll be black, because green absorbs red.

Explanation:

any color which absorbs red will appear "black", i.e. green, blue, black

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a train travels 99 kilometers in 3 hours, and then 80 kilometers in 5 hours. What is it’s average speed?
Karolina [17]

Average speed = (total distance covered) / (time to cover the distance)

Total distance covered = (99km + 80km) = 179 km

Time to cover the distance = 8 hours

Average speed = (179km / 8hours)

Average speed = 22.375 km/hour

6 0
4 years ago
An asteroid that has an orbital period of 3 years will have an orbital with a semi-major axis of about _____ years.
Airida [17]

Answer:

An asteroid that has an orbital period of 3 years will have an orbital with a semi-major axis of about  2 years.

Explanation:

Given;

orbital period of 3 years, P = 3 years

To calculate the years of an orbital with a semi-major axis, we apply Kepler's third law.

Kepler's third law;

P² = a³

where;

P is the orbital period

a is the orbital semi-major axis

(3)² = a³

9 = a³

a = a = \sqrt[3]{9} \\\\a = 2.08 \ years

Therefore, An asteroid that has an orbital period of 3 years will have an orbital with a semi-major axis of about  2 years.

5 0
3 years ago
A polar bear walks 27 km south then 17 km east. What is the polar bears final displacement?
Brilliant_brown [7]
It would be 44km to the east
6 0
3 years ago
4. Two kids are roller skating. Amy, with a mass of 55 kg, is traveling forward at 3 m/s. Jenny, who has a mass of 40 kg, is tra
IrinaK [193]
55*3-40*5=x*95
165-200=95x
x=7/19 ms-1
3 0
3 years ago
Read 2 more answers
According to the Law of Conservation of Matter (also sometimes called the Law of Conservation of Mass), if there are 3 atoms of
pychu [463]

Answer:

The answer is D.

Explanation:

The Law of Conservation of mass states that matter is not created nor destroyed in a chemical reaction.

7 0
3 years ago
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