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3 years ago

If a sound wave is produced with a wavelength of 1.04m what is the waves frequency

Physics

1 answer:

dmitriy555 [2]3 years ago

5 0

You should just ask the wave

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A 0.25-kg ball sits on the roof of a building that is 10 meters tall. Find the GPE. (Gravity = 9.8 on Earth)

Tasya [4]

Gravitational potential energy = mgh or mass times acceleration due to gravity times the height

Here the mass is 0.25kg, the height is 10m, and gravity is 9.8m/s^2 so...

GPE = (0.25)(10)(9.8)

GPE = 24.5 J

7 0

4 years ago

A periodic wave has a wavelength of 0,50 m and a speed of 20 m/s, What is the wave frequency?

faltersainse [42]

Answer:

u=speed, w=wavelenght, f=frequency

It's known that u=w*f => f=u/w

u=20m/s ==> f=20/0,5 => f=40 Hz

w=0,50m

Explanation:

6 0

2 years ago

It is correct to say that impulse is equal toA) momentum.B) the change in momentum.C) the force multiplied by the distance the f

Elena-2011 [213]

Answer:

B) the change in momentum.

Explanation:

The impulse is defined as the product between the force applied on an object (F) and the duration of the collision ( $\Delta t$ ):

$J=F \Delta t$ (1)

We can rewrite the force by using Newton's second law, as the product between mass (m) and acceleration (a):

$F=ma$

So, (1) becomes

$J=ma \Delta t$

Now we can also rewrite the acceleration as ratio between the change in velocity and change in time: $a=\frac{\Delta v}{\Delta t}$ . If we substitute into the previous equation, we find

$J=m\frac{\Delta v}{\Delta t}\Delta t=m\Delta v$

And the quantity $m\Delta v$ is equivalent to the change in momentum, $\Delta p$ .

6 0

3 years ago

2. A net force is _____.

Art [367]

The answer would be "the vector sum of forces acting on a particle or body."

Hope that helped ^^

8 0

3 years ago

A sleeping 68 kg man has a metabolic power of 79 w .

Lesechka [4]

3 0

4 years ago