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:
100N divide 2 by 200 it is 100
Answer:
answer d
Explanation:
It would be asnwer d because you need. to multiople both numbers 3.20x10*7 and 6.34x10^25 then multiple.
If energy could<span> be created or </span>destroyed<span>, all of our ideas of how the world works ... Historically, of course </span>not<span> all the forms of energy were known to begin with. ... too messy or complicated to make sense, we </span>would have<span> had to give up the law. ... </span>can<span> be converted into rest </span>mass<span> and back again (particle physicists </span>do<span> this </span><span>every )</span>
Answer:
Heat needed = 71.19 J
Explanation:
Here heat required can be calculated by the formula
H = mL
M is the mass of water and L is the latent heat of vaporization.
Mass of water, m = 31.5 g = 0.0315 kg
Latent heat of vaporization of water = 2260 kJ/kg
Substituting
H = mL = 0.0315 x 2260 = 71.19 kJ
Heat needed = 71.19 J
