Answer:
Explanation:
The magnitude of the electrostatic force between two charges is given by Coulomb's law:
where:
is the Coulomb's constant
are the two charges
r is the separation between the two charges
In this problem, at the beginning we have:
is the first charge
is the second charge
r is their initial separation
So the initial force is
Later, we have:
qA is doubled and r is doubled
This means that:
is the new charge
is the new separation
So the new force is:
The gravitational field gx at the surface of planet x (M/m)(r/R)² times the gravitational field gy at the surface of planet y.
<h3>What is gravitational field?</h3>A gravitational field, as defined by physics, is the influence a massive body has on the area surrounding it, exerting a force on another huge body. In other words, a gravitational field, which is measured in newtons per kilograms (N/kg), aids in the explanation of gravitational field.
Now, Let planet x has mass M and radius R: then gravitational field at the surface of planet: gₓ = GM/R².
Let planet y has mass m and radius r: then gravitational field at the surface of planet: = Gm/r².
Hence, gₓ/ = (M/m)(r/R)².
So, the gravitational field gx at the surface of planet x (M/m)(r/R)² times the gravitational field gy at the surface of planet y.
Learn more about gravitational field here:
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Answer:
1.31 m
Explanation:
The relationship between frequency and wavelength of a sound wave is
where
c is the speed of the wave
f is the frequency
is the wavelenfth
In this problem, we have
c = 343.06 m/s
f = 261.63 Hz
So we can solve the formula for the wavelength: