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HACTEHA [7]
2 years ago
15

A rocket accelerates from 1,000m/s to 5,000m/s in 2 seconds. what is its acceleration ?

Physics
1 answer:
Natali5045456 [20]2 years ago
4 0

Answer:

a=v-u/t

a=5000-1000/2

a=4000/2

a=200

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A wave has 25 wavelengths in 5 secs. The frequency of the wave is _.
kati45 [8]
Heyyyy I wish I could help but I don’t know
7 0
3 years ago
Forces that are equal in size but opposite in direction are ____.
Alchen [17]

Answer: The correct answer is balanced force.

Explanation:

Balanced forces are balanced when the forces are acting equal in magnitude but opposite in direction. The balanced forces will not cause change in the speed of the object.

Unbalanced forces are unbalanced when the forces acting on the object are not equal in magnitude. The combined force is the difference between the forces. It will cause the change in the speed of the body.

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8 0
3 years ago
The power output of a tuba is 0.35 W. At what distance is the sound
STALIN [3.7K]

The distance of the sound from the tuba is 4.82 m.

<h3>Area of the tube</h3>

The area of the tuba is calculated as follows;

I = P/A

where;

  • I is intensity of sound
  • P is power
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A = P/I

A = 0.35 / (1.2 x 10⁻³)

A = 291.67 m²

<h3>Distance of the sound</h3>

Area = 4πr²

r = \sqrt{\frac{A}{4\pi} } \\\\r = \sqrt{\frac{291.67}{4\pi} } \\\\r = 4.82 \ m

Thus, the distance of the sound from the tuba is 4.82 m.

Learn more about intensity of sound here: brainly.com/question/4431819

8 0
3 years ago
Which of the following values represents an index of refraction of an actual material?
serg [7]

Sadly, we're forced to answer the question without the benefit of the
list of choices, which, for some reason, you decided not to let us see.

Index of refraction of a substance =

               (speed of light in vacuum) / (speed of light in the substance).

Any number greater than  ' 1 ' can be an index of refraction.  A number
less than ' 1 ' can't be . . . that would be saying that the speed of light
in this substance is greater than the speed of light in vacuum.

3 0
4 years ago
Which vector has a y-component with a length of 3?<br> A. C<br> B. d<br> C. a<br> D. b
goldenfox [79]

Answer:

Option C : a

Explanation:

4 0
3 years ago
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