What is the speed of the sound wave if the frequency is 70 hertz and the wavelength is 0.4 meters

Compare the densities of two objects that have the same volume, but one feels heavier than the other.

motikmotik

We know, density = Mass / Volume
It represents density is directly proportional to mass and indirectly proportional to volume. So, at a constant volume, object with larger density will appear more heavier than that of object with smaller density.

In short, Heavier object will have the higher density than the other.

Hope this helps!

8 0

4 years ago

How many hydrogen atoms are found in two molecules of hydroxylamine, 2NH2OH?

Bogdan [553]

It would be six because in every one molecule, there are three atoms of hydrogen, so just double that and you have six.

6 0

4 years ago

Read 2 more answers

What is kinetic energy

Goshia [24]

<span>Kinetic energy is energy that a body possesses by virtue of being in motion.

Think of a windmill...

Windmills use the winds energy in order to spin and in doing so creates energy for other things to be powered.

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6 0

3 years ago

You place a large pebble in a slingshot, pull the elastic band back to your chin, and release it, launching the pebble horizonta

sladkih [1.3K]

Answer:

The larger pebble has 25 times more mass.

Explanation:

To solve the exercise it is necessary to apply the work and energy conservation equations.

For the case described, the work done must be preserved and must be the same, that is,

$W = 0$

By definition work linked to the conservation of kinetic energy would be given by

$\Delta KE = W = 0$

$\Delta KE = 0$

$KE_{larger}-KE_{smaller} = 0$

$KE_{larger}=KE_{smaller}$

$\frac{1}{2}m_lv_l^2 = \frac{1}{2}m_sv_s^2$

$m_lv_l^2 = m_sv_s^2$

The ratio between the mass and the velocity would be,

$\frac{m_l}{m_s}=\frac{v_s^2}{v_l^2}$

$\frac{m_l}{m_s} = \frac{500^2}{100^2}$

$\frac{m_l}{m_s} = 25$

Therefore the answer is: The larger pebble has 25 times more mass.

4 0

3 years ago

As the wavelength of an electromagnetic wave ___ the frequency of the wave ________.

adoni [48]

Answer:

As the wavelength of an electromagnetic wave _decrease__ the frequency of the wave _increase_______.

Explanation:

What is the relationship between frequency and wavelength?

Wavelength and frequency of light are closely related. The higher the frequency, the shorter the wavelength. Because all light waves move through a vacuum at the same speed, the number of wave crests passing by a given point in one second depends on the wavelength.

That number, also known as the frequency, will be larger for a short-wavelength wave than for a long-wavelength wave. The equation that relates wavelength and frequency is:

V= fλ

where v= velocity

f= frequency

λ = wavelength

⇒ f = v/λ

also f ∝ 1/λ

For electromagnetic radiation, the speed is equal to the speed of light, c, and the equation becomes:

C= fλ

where c= Speed of light

f= frequency

λ = wavelength

⇒ f = v/λ

also f ∝ 1/λ

8 0

4 years ago