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3 years ago

Over the course of 30 seconds, 3 waves hit the shore. What is the period of the waves?

Physics

1 answer:

laila [671]3 years ago

5 0

Answer:

3 per 10 seconds.

Explanation:

If it's 30 seconds and 3 waves hit throughout that time period, dividing should get you your answer..

30/3 = 10.

Hope this helped!

Source(s) used: N/A

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Thought Experiment: A monkey escapes from a zoo and climbs a tree. After failing to entice the monkey down, a zookeeper fires a

Andreyy89

Explanation:

When bullet is shot towards the monkey then let say the distance of monkey from the bullet is "d"

so we can find the time to reach the bullet to the monkey

$t = \frac{d}{vcos\theta}$

Now similarly we can find the vertical displacement of the bullet in the same time

$\Delta y = vsin\theta t - \frac{1}{2}gt^2$

$\Delta y = v sin\theta (\frac{d}{vcos\theta}) - \frac{1}{2}gt^2$

so it is given as

$\Delta y = d tan\theta - \frac{1}{2}gt^2$

here if the monkey is initially at height H above the ground at given angle then we can say

$H = dtan\theta$

so we can say that

$\Delta y = H - \frac{1}{2}gt^2$

So if at the same time monkey will fall down then the height of monkey from ground after time "t" is given as

$\Delta y = H - \frac{1}{2}gt^2$

so here bullet will hit the monkey as both monkey and bullet are at same position.

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3 years ago

What word means the same thing as force of gravity?

RideAnS [48]

Answer:

B. Weight

Explanation:

Weight is the force of gravity exerted on a body

It's the force exerted on a body by the influence of the earth's gravitational force

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2 years ago

Tim adds salt as he starts to heat a pot of water to cook pasta. When the water is boiling, he notices the salt has dissolved

katen-ka-za [31]

Answer:

The salt is dissolved by the water and heat. If the pot isn't boiling, the salt wouldn't dissolve, it would stay undissolved.

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4 years ago

The emf of a battery is equal to its terminal potential difference: A) under all conditions B) only when the battery is being ch

velikii [3]

Answer:

option (C)

Explanation:

EMF stand for electro motive force. the emf of a battery is the potential between the two electrodes when it is not use in the circuit.

The terminal potential difference is the potential difference between the electrodes of a cell when it is in use.

EMF is only when the current is very large in the battery.

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3 years ago

Read 2 more answers

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Radda [10]

Answer:

Explanation:

The mass of an electron is small compared to the neutron and proton, so it's negligible. It's like adding zero to a number.

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3 years ago