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Marina CMI [18]
3 years ago
5

An image of a car with height of 14 cm occurred in the mirror which is located at a T-

Physics
1 answer:
fomenos3 years ago
7 0

Hello dear

When a concave mirror is used as rear view mirror then vehicles or any object behind the vehicle in which concave mirror is used

looks bigger than its actual size ,

2. it also looks more closer than actual

3. and it also do not give wider view of coverage .

Thus , it might lead to accidents of vehicles

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By newton third law of motion, we know that if a rocket ship pushes down on the ground, the ground will push back up on the rock
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We don't know that at all. The 3rd law says that the REaction is opposite and EQUAL to the action.  We don't know where that "twice as much" comes from.

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A 1,000 kg car has 50,000 joules of kinetic energy. What is it’s speed
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How does a simple machine facilitate our work​
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3 years ago
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What is the energy of a mole of photons that have a wavelength of 413 nm? (h = 6.626 × 10⁻³⁴ J • s and c = 3.00 × 10⁸ m/s)
Triss [41]

Answer:

Energy of one mole of photon will be 2.89\times 10^5J    

Explanation:

We have given wavelength of photon \lambda =413nm=413\times 10^{-9}m

Velocity of light is given c=3\times 10^8m/sec

Plank's constant h=6.626\times 10^{-34}Js

Energy of the photon is given by E=\frac{hc}{\lambda }=\frac{6.626\times 10^{-34}\times 3\times 10^8}{413\times 10^{-9}}=0.048\times 10^{-17}J

We have to find the energy of one mole of photon

One mole of photon is equal to 6.023\times 10^{23}photon

So energy of one mole of photon will be equal to 6.023\times 10^{23}\times 0.048\times 10^{-17}=2.89\times 10^5J

So energy of one mole of photon will be 2.89\times 10^5J

6 0
3 years ago
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