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3 years ago

As the frequency of a wave increases...

Physics

1 answer:

expeople1 [14]3 years ago

8 0

I think its b because more wave crests pass each second when frequency increases meaning the wavelength shortens?

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Mr. Tolman believes that our universe is expanding, but with all of the gravitational force from the celestial bodies of space,

sattari [20]

The correct answer is A I believe but I may not be correct. Either A or B

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3 years ago

April and Alex are saving money to buy new phones. Each friend starts with some money and saves a specific amount each week.

qwelly [4]

First thing to note is that we are on week 0, when they start saving:

The equation for Alex is:

y=20x + 125

Know that we are on week 0, and x is our weeks, that makes our equation:

y=20(0) + 125

Which means it's really:

y=125

That means that the first one is E. 125

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5 0

4 years ago

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Please help me on question 3a and 3b.<br><br>Thanks!

Sonbull [250]

(a) The frequency of water wave is 2 Hz.

(b) The wave speed of the water wave is 3.6 m/s.

<u>Explanation:</u>

(a) It is known that completion of one complete wave in 1 second is defined as frequency of 1 HZ. So here there are 120 waves crossing the boat in 1 minute. So the frequency of the water wave will be

$Frequency =\frac{\text { Number of waves }}{\text { Time in seconds }}$

As the time is 1 minute which is equal to 60 seconds and the number of waves is given as 120 then the frequency of the water wave is

$\text { Frequency }=\frac{120}{60}=2 \mathrm{Hz}$

So the frequency of water wave is 2 Hz.

(b) Then if the wavelength of the water wave is 1.8 m with a frequency of 2 Hz, then speed of the wave can be determined as the product of wavelength with frequency.

So Speed = Frequency × Wavelength

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7 0

3 years ago

1. A vector is given by its components, Ax = 2.5 and A, = 7.5. What angle

Allushta [10]

Answer:

A) 72° or 71.56°

Explanation:

We have two components on the X-axis and y-axis respectively. So we can use the tangent of the angle to be able to find the angle with respect to the horizontal component.

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Ay = 7.5

tan(α) = 7.5/2.5

$\alpha = tan^{-1} (3)\\$

α = 71.56°

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3 years ago

Which statement best describes the relationship between forces?

kogti [31]

I believe the answer would be A. because a magnet has both a south and a north pole, and electrical charges are formed by positive and negative forces. Hope I helped!

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3 years ago

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