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Papessa [141]
3 years ago
15

If a light source (such as a light bulb) appears white, then it must _________ all colors of light.

Physics
1 answer:
pishuonlain [190]3 years ago
5 0
Emit means put out so, emit
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A 1200 kg car accelerates from 13m/s to 17m/s. find the change in momentum of the car?
lisabon 2012 [21]

Answer:

4800

Explanation:

The change in velocity of the car is 17-13=4m/s. Since the change in momentum is the mass multiplied by the change in velocity, the answer is 4*1200=4800. Hope this helps!

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A

Explanation:

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A car moves at 45 kilometers per hour.
AnnyKZ [126]

Answer:

4

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7 0
2 years ago
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(20 points) Pressure is a measure of force per unit area or P=F/A. A student is checking the amount of pressure their car exerts
Gala2k [10]

Answer:

35.2 ps

Explanation:

Hello!

A US short ton is equal to 2 000 pounds, therefore:

2.25 tons = 4500 pounds

Now lets convert the area of each tire footprint:

1 cm = 0.393701 in

12.5 cm = 4.92126 in

16.5 cm = 6.49607 in

Therefore, the area of the footprint is:   31.9688 in^2

Then, the pressure exerted by the car is given by the weigth devided by the total area, that is 4 times the area of the footprint :

4500 /(4 * 31.9688)  psi = 35.1906 psi

Rounding to the first tenth

35.2 psi

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2 years ago
How many neutrons does element X have if it’s atomic number is 27 and it’s mass number is 89 ?
Elan Coil [88]
<span>element X has 62 neutrons The atomic number of an atom is the number of protons that atom has. And the mass number of an atom is the sum of the number of protons and neutrons an atom has. So to determine the number of neutrons, simply subtract the atomic number from the mass number. So 89 - 27 = 62 So element X has 62 neutrons.</span>
5 0
3 years ago
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