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Stells [14]
3 years ago
10

What do the different colors in a line spectrum represent? why are the spectra for each element unique?

Physics
1 answer:
Lana71 [14]3 years ago
8 0
They typically represents different wavelengths of element due to its energy emission in the form of visible light. When an electron of that particular element move from a higher energy level down to a lower energy level, it gives off energy in the form of photon emission. Atom of a certain element has a unique electron arrangement thus it can considered that particular element's spectrum is unique.
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What is the mass of a cannonball if a force of 2,500 N gives the cannonball an acceleration of 200m/s2?
pentagon [3]
Newton's 2nd law of motion:

                         Force = (mass) x (acceleration)

Divide each side
by 'acceleration':      Mass  =  (force) / (acceleration)

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8 0
4 years ago
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A car jumps off a ramp with a Kinetic energy of 5,000 joules. This same car has a gravitational potential energy of 4,685 joules
Sedaia [141]

Answer:

14,653 J.

Explanation:

We know that,

Total mechanical energy is equal to the sum of all the potential and kinetic energies.

Given,

Kinetic energy when a car jumps off a ramp= 5000 J

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Potential energy when the car lands= 4968 J

TME = 5000 + 4685 + 4968

        = 14,653 J

Hence, the car's total mechanical engery is equal to 14,653 J.

3 0
3 years ago
The velocity of a car changes from 5 m/s to 20 m/s in 30 sec the acceleration?​
stepan [7]

Answer:

0.5m/s2

..............

4 0
3 years ago
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PLEASE ANSWER ASAP BEFORE MY TEACHER AND MY MOM KILLES ME PLEASE ASAP
alisha [4.7K]

Answer:

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The red that you see at the bottom is neither liquid nor is it a part of the experiment.

It is simply the <u>color of the bottom of the container</u> that the experiment was conducted in.

4 0
3 years ago
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