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Diano4ka-milaya [45]
3 years ago
7

A car speeds up while the engine delivers constant power. Is the acceleration greater at the beginning of this process or at the

end? Explain.
Physics
1 answer:
dsp733 years ago
4 0

Answer:

The acceleration greater at the beginning of this process

Explanation:

The car when starting to move is necessary an acceleration therefore at the beginning of the movement there is an acceleration. The engine power is at a constant value so that when the car reaches the maximum speed (constant speed) at that power there will be no acceleration.

That is to say, at constant speed = zero acceleration

And of course this final null acceleration will be less than the initial acceleration so that the car starts to move .

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What happen to the bulb when it is in series connection?
coldgirl [10]
If the bulb is in series with something else, then . . .

--  The brightness of the bulb depends on the <em>other</em> device in the circuit. 

--  If the other device is designed to use <em>less power</em> than the bulb, then the
other device gets <em>more power</em> than the bulb gets.

--  If the other device is designed to use <em>more power </em>than the bulb, then the
other device gets <em>less power</em> than the bulb gets.

--  If the other device is removed from the circuit, then the bulb doesn't light at all.

This description of the often-screwy behavior of a series circuit may partly explain
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8 0
3 years ago
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If it were not for these two men, we might not have come to understand microorganisms. These men are named _____.
Likurg_2 [28]

If it were not for these two men, we might not have come to understand microorganisms. These men are named Anton Van Leeuenhook and Robert Hooke.

8 0
3 years ago
ich statement best describes the fundamental difference between spiral and elliptical galaxies? Spiral galaxies are more massive
Ahat [919]

Answer:

The oldest stars in spiral galaxies are younger than the oldest stars in elliptical galaxies.

Explanation:

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3 years ago
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Prof. Marcia Grail, supervillain and superscientist, wishes to spy on her foes (they'll all pay!) from orbit. She wishes to be a
Sloan [31]

Answer:

563.64 m

Explanation:

Given that as per the question

x = 5 cm = 0.05 m

D = 4.2 × 107 m

d = smallest aperture size

As per the situation the solution of the smallest aperture telescope that she can get away with is below :-

We will use Rayleigh's diffraction limit which is

d\frac{x}{D} = 1.22\lambda

The equation will be

d\frac{0.05}{4.2\times 10^7} = 1.22[550\times 10^{-9}]

d = 563.64 m

So, the answer is d = 563.64 m

6 0
3 years ago
When operating at greater than headway speed how far must a pwc stay from a stationary platform or shorline?
g100num [7]
The answer to the question above is 50 FEET. This is also the same distance as the boat. This should be the distance that a PWC stay away from a stationary platform or shoreline or another boat when operating at greater than headway speed. PWC stands for personal water craft such as a <span>water scooter.</span>
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