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jeka94
3 years ago
5

A boat can travel 2.30 m/s in still water. If the boat points its prow directly across a stream whose current is 1.80 m/s , what

is the magnitude of the velocity of the boat relative to the shore?
Physics
1 answer:
Alinara [238K]3 years ago
5 0

Answer:

A boat can travel 2.30 m/s in still water. (a) If the boat points its prow directly across a stream whose current is. ... (a) What is the velocity (magnitude and direction) of the boat relative to the shore? ... The boat's velocity with respect to the shore, , is the sum of its velocity with respect to the water

Explanation:

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There's a very subtle thing going on here, one that could blow your mind.

Wherever we look in the universe, no matter what direction we look,
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The only way we know of right now that can cause light waves to get
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the observer. The lengthening of the waves on account of that motion
is called the Doppler effect.  (The answer to the question is choice-c.)

But that may not be the only way that light waves can get stretched.  It's
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From that, we say the whole universe is expanding, and that right there is
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Now:  If ... say tomorrow ... a competent Physicist discovers another way
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Now that our mind has been blown, come back down to Earth with me,
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It's true that when we look at distant galaxies, we do see their light
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And then we use the Doppler effect to calculate how fast that galaxy
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every day.                                   I mean every night.

So here's the question for you to think about ... maybe even READ about:

When the light from a distant galaxy pours into our telescope, and we
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6 0
3 years ago
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During convection, heat warms up a fluid, making the fluid less dense so it begins to RISE. As the warm fluid moves, it begins t
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Answer:

True

Explanation:

Convection is a form of heat transfer that is predominantly common in fluids especially liquid and gas.

It occurs by the movement of a part of substance from one place to another based on density and temperature differences.

A typical convection cell is made up of a liquid that is heated. The liquid part close to the heat source becomes warmer and rises due to its low density. The part away from the heat source is more dense and begins to sink.

This analogy is commonly demonstrated in a boiling pot of water.

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A fast moving super hero in a comic book runs around
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That would be The Flash. 
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A small ball of charge Q and mass m has a velocity v at infinity. It collides head-on with a ball of the same charge and mass wh
Hatshy [7]

Answer:

Explanation:

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Answer:

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