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2 years ago

8

An advertisement for a new fish food claims that lab studies show that fish grew three inches in three weeks while eating the fo

od. Travis wondered if the food was worth the extra cost. To evaluate the claim in the advertisement, Travis should

1 answer:

Varvara68 [4.7K]2 years ago

6 0

Check the data for the control group to see how much the fish grew without the new food.

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A sinusoidal wave travels along a string. The time for a particular point to move from maximum displacement to zero is 0.13 s. W

vitfil [10]

Answer:

Part a)

T = 0.52 s

Part b)

$f = 1.92 Hz$

Part c)

$speed = 3.65 m/s$

Explanation:

As we know that the particle move from its maximum displacement to its mean position in t = 0.13 s

so total time period of the particle is given as

$T = 4\times 0.13 = 0.52 s$

now we have

Part a)

T = time to complete one oscillation

so here it will move to and fro for one complete oscillation

so T = 0.52 s

Part b)

As we know that frequency and time period related to each other as

$f = \frac{1}{T}$

$f = \frac{1}{0.52}$

$f = 1.92 Hz$

Part c)

As we know that

wavelength = 1.9 m

frequency = 1.92 Hz

so wave speed is given as

$speed = wavelength \times frequency$

$speed = 1.92 \times 1.9$

$speed = 3.65 m/s$

4 0

2 years ago

If you increase the frequency of a sound wave four times what will happen to its speed

Anika [276]

Answer: The correct answer is "the speed of the wave becomes four times".

Explanation:

The relation between the speed, frequency and the wavelength is as follows:

v=f\lambda

Here, v is the speed of the wave, f is the frequency and \lambda is the wavelength.

The speed of the sound wave is directly proportional to the frequency.

In the given problem, if the speed of the sound wave is increased four times then the speed of the sound becomes four times.

Therefore, the speed of the sound wave becomes four times.

8 0

2 years ago

Read 2 more answers

When a vapor condenses to a liquid, an amount of thermal energy (Q

mina [271]

Answer:

true

Explanation:

I did this unit for science

6 0

1 year ago

A cell phone is released from the top with the speed of 10ms what is the speed 3s after?

sergeinik [125]

Answer:

30ms

Explanation:

you need to multiple the 10ms by 3s which gives you 30ms

6 0

2 years ago

Sound can travel through a medium, but it does not require a medium.<br> a. True.<br> b. False

attashe74 [19]

That's false. No medium = no sound.

7 0

2 years ago