Find the gravitational force that Earth (mass = 5.97 × 10²⁴ kg) exerts on the moon (mass = 7.35 × 10²² kg) when the distance bet
1 answer:
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In this case, you need the formula below where:
F = force
k = coulombs constant 8.99 x10^{9} N.m^{2} . C^{-2}
q1 = electric charge 1
q2 = electric charge 2
r = the distance between the charges
pls note: make sure your units are correct (in meters etc, not fm (<em>femto-meters</em>)).
Curiously, this question doesn't tell you what atom you are next to the nucleus of. Different numbers of protons in the nucleus of the atom will make for vastly different forces in your answer...
F = force
k = coulombs constant 8.99 x10^{9} N.m^{2} . C^{-2}
q1 = electric charge 1
q2 = electric charge 2
r = the distance between the charges
pls note: make sure your units are correct (in meters etc, not fm (<em>femto-meters</em>)).
Curiously, this question doesn't tell you what atom you are next to the nucleus of. Different numbers of protons in the nucleus of the atom will make for vastly different forces in your answer...
Answer:
9) HIGHER AND LOWER INTESITY, 10) speed of sound must decrease.
11) guitar the strings, flute, 12) In the mountains, 13) sound of a low frequency horn (sub-wofeer)
Explanation:
In this exercise we are asked to complete the sentences.
9) the intensity of the sound is the square of the amplitude, the missing words are
HIGHER INTESITY
LOWER INTENSITY
10) the speed of sound is
v =
and it is also related to temperature
v =
We must be careful since the compressibility modulus (B) changes significantly between the solid, liquid and gaseous states, if we are in the same medium, the speed of sound decreases with increasing density. For a higher density the speed of sound decreases
Also the speed of sound increases with temperature, but its effect is less,
Therefore, by having these two effects in the opposite direction, the change in density is more important, so the speed of sound must decrease.
.
11) when you listen to a guitar the strings resonate with the instrument body
on the flute has a resonance between the blown air and the flute tube
12) When you are in front of a tall object, the sound is reflected and the echo is heard.
In the mountains, in the squares where there is a large object that reflects in sound
13) when we hear the sound of a low frequency horn (sub-wofeer) we feel the vibration of the air, this is an effect of the pressure energy of the sound on our chest
Answer:
is the density of the oil
Explanation:
Given:
- height of oil column,
- oil column height that is more than the water column height in the other arm,
<u>Now from the given it is clear that the height of water column is:</u>
Now according to the pressure balance condition of fluid columns:
Pressure due to water column = Pressure due to oil column
is the density of the oil
Answer:
As Per Provided Information
Velocity of wave v is 10m/s
These ocean wave passes a stationary point every 5 s ( It's time period)
First we calculate the frequency of ocean wave .
<u>Using</u><u> Formulae</u>
here
v is the velocity of wave .
Now calculating the wavelength of the wave .
<u>Using </u><u>Formulae </u>
Substituting the value and we obtain
<u>Therefore</u><u>,</u>
- <u>Wavelength </u><u>of </u><u>the </u><u>wave </u><u>is </u><u>100 </u><u>metres</u><u>.</u>