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3 years ago

What is meant by saying that a wave has a low frequency?

Physics

2 answers:

zaharov [31]3 years ago

6 0

agasfer [191]3 years ago

5 0

The answer is B, meaning the wave length is very long not just the wave in height or anything like that

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Will pushing on a car always change the cars mechanical energy?what must happen for the cars kinetic energy to increase?

riadik2000 [5.3K]

1) Pushing on a car will not always change the car's mechanical energy, but it does change yours since your physically using most of your energy to push the car.

2) In order for a cars kinetic energy to increase, the car has to be in motion when it is going down a hill, because when you go down hills and objects like that; you tend to increase in kinetic energy.

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3 years ago

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If a force of 5 n to left and 9 n to right act on a object what is the net force

emmainna [20.7K]

4 n to the right is the net force

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3 years ago

FOR FLVS STUDENTS ONLY///NO BIT LINKS, SCAM LINKS, OR GIBBERSH

Marysya12 [62]

Answer:

whats thw question tho

Explanation:

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3 years ago

If an object has two forces that are equal in magnitude, but acting on it in opposite directions, what are some possible things

Oksi-84 [34.3K]

Answer: The body will be in a position of rest

Explanation:

Since both forces are equal and acting in opposite direction on the body. It will make the body to be in a state of rest or equilibrium because the sum of the forces acting in the body will be zero.

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3 years ago

4. A family leaves from New York City and is flying to Los Angles which is 2800mi away. It takes

Blizzard [7]

The average speed of the whole travel is equal to <u>400 mph</u>.

Why?

From the statement, we know that whole travel is divided into three parts. For the first part (traveling from New York to Chicago), we have that it was 3.25 hours and the covered distance was half of the total distance (1400mi). For the second part, we have that it was 1 hour (layover time), and the covered no distance. For the third part (traveling from Chicago to Los Angeles), we have that it was 2.75 hours, and it took the other half of the total distance (1400mi).

We can calculate the average speed of the whol travel using the following formula:

$AverageSpeed=\frac{distance_{1}+distance_{2}+distance_{3}}{time_{1}+time{2}+time_{3}}$

Now, substituting and calculating, we have:

$AverageSpeed=\frac{1400mi+0mi+1400mi}{3.25h+1h+2.75h}$

$AverageSpeed=\frac{2800mi}{7h}=400mph$

Hence, we have the average speed of the whole travel is equal to 400 mph.

Have a nice day!

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4 years ago