Answer:

Explanation:
Mass of the Sun = 
Amount of Hydrogen = 75% of Mass of Sun,
thus mass of Hydrogen (m) in the Sun is,

m = 
Speed of Light (c) = 
Thus, energy(E) produced if whole of hydrogen is converted into energy,
E = mc²



Answer:

Explanation:
First we need to find the capacitance of the capacitor.
The capacitance is given by:

Where
is the air permittivity, which is approximately 8.85 * 10^(-12)
The radius is 12/2 = 6 mm = 0.006 m, so the area of the capacitor is:

So the capacitance is:


The time constant of a rc-circuit is given by:

So we have that:

Density = Mass / Volume
Mass = Density * Volume
Mass = 30 g/cm³ * 10 cm³ = 300 g
Mass = 300 g
As Figure A suggests, Social Security is the single largest mandatory spending item, taking up 38% or nearly $1,050 billion of the $2,736 billion total. The next largest expenditures are Medicare and Income Security, with the remaining amount going to Medicaid, Veterans Benefits, and other programs.
Answer:

Explanation:
The distance traveled by the speeding car will be
, where
.
The distance traveled by the police car will be given by the formula:
, where
and
since it departs from rest, thus having
.
The police car will reach the speeding car when those distances are the same, or
, so we will have:

Which means:

This is the expression asked, but we can use our values:
