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dexar [7]
3 years ago
7

A visible light emits light with a wavelength of 4.00x10^-7m.

Physics
1 answer:
velikii [3]3 years ago
8 0

answer

a) 7.50x10^4Hz

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Billiard ball A (0.35 kg) is struck such that it moves at 10 m/s toward a second identical ball (Ball B) initially at rest. Afte
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Answer:

Explanation:

We shall apply law of conservation of momentum during the collision of ball A and B .

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Which of these is an experiment generally regarded as being first carried out by James Joule?
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Describe a situation where you can be traveling at a low speed but have an extremely high velocity
Reil [10]

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Cruising at 35,000 feet in an airliner, straight toward the east,

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A 50 kg astronaut floating in space throws her 2 kg wrench to the left at 10
Hoochie [10]

The astronaut will move at 0.4 m/s in the opposite direction to the wrench

Explanation:

We can solve this problem by using the law of conservation of momentum. In fact, the total momentum of the astronaut-wrench system must be conserved before and after the launch.

Before the launch, the total momentum is zero, since the astronaut is at rest:

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After the launch, the total momentum is:

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Since momentum is conserved, we can write (1) = (2), and so we can solve for V:

0=mv+MV\\V=-\frac{mv}{M}=-\frac{(2)(10)}{50}=-0.4 m/s

And the negative sign means that the astronaut will move in the opposite direction to the wrench.

Learn more about conservation of momentum:

brainly.com/question/7973509

brainly.com/question/6573742

brainly.com/question/2370982

brainly.com/question/9484203

#LearnwithBrainly

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