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Bogdan [553]
3 years ago
12

What is motion?What are 3 formulas of motion?

Physics
1 answer:
zepelin [54]3 years ago
5 0

Answer:

3 formula are

v = u + at

v² = u² + 2as

s = ut + ½at²

what is motion

the action or process of moving or being moved.

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Which statement best defines work? A. Work is the time it takes to move an object once acted upon by a force. B. Work occurs whe
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a. work is the time it takes to move an object once acted upon by a force


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2 years ago
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a charge of 30. coulombs passes through a 24-ohm resistor in 6.0 seconds. what is the current through the resistor? (1) 1.3 a (3
DochEvi [55]
As I = Q/t (charge/time) the answer is 5a.

30/6 = 5
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3 years ago
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A car is traveling at 70 km/h. It then uniformly decelerates to a complete stop in 12 s. Find its acceleration ( in m/s2 ).
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Answer:

Acceleration will be -1.620m/sec^2

Explanation:

We have given initial speed of the car is 70 km/hr

We know that 1 km = 1000 m

And 1 hour = 3600 sec

So 70km/hr=70\times \frac{1000m}{3600sec}=19.444m/sec

It is given that car stops in 12 sec

So final speed of the car v = 0 m/sec

Time t = 12 sec

From first equation of motion v = u+at

So 0=19.444+a\times 12

a=\frac{-19.444}{12}=-1.620m/sec^2 ( negative sign indicates that speed of the car will constantly decrease )

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3 years ago
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The scientist who found a way to measure the distance between the sun and Venus which
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Answer:

Astronomer Edmond Halley

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The astronomical unit using the transit of venus

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8 0
2 years ago
Which of the following wavelengths will produce standing waves on a string that is 3.5 m long?
denpristay [2]

In a string of length L, the wavelength of the n-th harmonic of the standing wave produced in the string is given by:

\lambda=\frac{2}{n} L


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The wavelength of the 2nd harmonic is:

\lambda=\frac{2}{2} \cdot 3.5 m=3.5 m


The wavelength of the 4th harmonic is:

\lambda=\frac{2}{4} \cdot 3.5 m=1.75 m


It is not possible to find any integer n such that \lambda=5 m, therefore the correct options are A, B and D.

3 0
2 years ago
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