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konstantin123 [22]
4 years ago
9

Acceleration a has the dimensions of length per time squared, speed v has the dimensions of length per time, and radius r has th

e dimension of length. What are the dimensions of the following combinations of quantitiesa=vr
Physics
1 answer:
vagabundo [1.1K]4 years ago
8 0

Answer:

L^2T^-1

Explanation:

a = vr

The dimension of v is LT^-1

The dimension of r is L

Therefore, the dimension of a = LT^-1 × L = L^2T^-1

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A sinusoidal wave of wavelength 2.00m and amplitude 0.100 m travels on a string with a speed of 1.00 m/s to the right. At t = 0
Shkiper50 [21]
  1. The frequency and angular frequency are 0.500 Hertz and 3.142 rad/s. respectively.
  2. The angular wave number is equal to 3.142 rad/m.
  3. The wave function for this wave is given by: y = Asin(kx - ωt + Φ).
  4. The equation of motion for the left end of the string is given by: y = 0.100sin(3.142x - 3.142t + 0).
  5. The equation of motion for the left end of the string at x = 1.50 m to the right is equal to y = 0.100sin(4.71 - 3.142t + 0).The maximum speed of any point on the string is 0.3142 m/s.

<h3>How to calculate the frequency and angular frequency?</h3>

First of all, we would determine the frequency of this wave by using this formula:

Frequency = wavelength/speed

Frequency = 0.100/2.00

Frequency = 0.500 Hertz.

For the angular frequency, we have:

Angular frequency, ω = 2πf

Angular frequency, ω = 2 × 3.142 × 0.500

Angular frequency, ω = 3.142 rad/s.

<h3>How to determine the angular wave number?</h3>

Angular wave number, k = 2π/∧

Angular wave number, k = (2 × 3.142)/2.00

Angular wave number, k = 3.142 rad/m.

<h3>How to determine the wave function for this wave?</h3>

Mathematically, the wave function for this wave is given by:

y = Asin(kx - ωt + Φ)

For the equation of motion for the left end of the string, we have:

y = 0.100sin(3.142x - 3.142t + 0)

For the equation of motion for the left end of the string at x = 1.50 m to the right, we have:

y = 0.100sin(3.142x - 3.142t + 0)

y = 0.100sin(3.142(1.5) - 3.142t + 0)

y = 0.100sin(4.71 - 3.142t + 0)

<h3>What is the maximum speed of any point on the string?</h3>

Vy = 0.100sin(- 3.142)cos(3.142x - 3.142t)

Vy ≤ 0.3142 m/s (since cosine varies +1 and -1).

Read more on wave function here: brainly.com/question/11181093

#SPJ4

Complete Question:

A sinusoidal wave of wavelength 2.00 m and amplitude 0.100 m travels on a string with a speed of 1.00 m/s to the right.  Initially, the left end of the string is at the origin.  Find:

(a) the frequency and angular frequency,

(b) the angular wave number, and

(c) the wave function for this wave.  

Determine the equation of motion in SI units for

(d) the left end of the string, and

(e) the point on the string at x = 1.50 m to the right of the left end.

(f) What is the maximum speed of any point on the string?

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Should a flat grassland or a hillside have deeper soil? Explain your answer.
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A hillside of course my friend
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17. Two masses, m1 and m2 are separated a distanced. What changes in the variables will result in no change in the
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in my opinion, c is the right answer

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Each piston of an engine makes a sharp sound every other revolution of the engine. How fast is a race car going if its eight-cyl
goldfiish [28.3K]

Answer:

93.75 m/s

Explanation:

Given:

The frequency of the sound = 750 Hz

The number of pistons making the sound = 8

Revolutions made by the engine = 2000 revolutions/ km

Thus,

the frequency of sound by 1 piston = 750 / 8  = 93.75 Hz

also, it is given that for every other revolution sound is made.

thus, for every 2 revolution sound is made

therefore,

Number of revolutions per second = 93.75 Hz × 2 = 187.5 rev/s

Now,

the speed of the car will be calculated as:

= Number of revolutions per second / Revolutions made by the engine

or

The speed of the car = \frac{187.5\ rev/s}{2000\ rev/km}

or

The speed of the car = 0.09375 km/s = 93.75 m/s

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