Estimated total energy output IN ONE SECOND = 5 x 10²⁶ Joules .
Energy = mass · c² ( Albrecht Einshtein)
c = 3 x 10⁸ m/s
c² = 9 x 10¹⁶ m²/s²
5 x 10²⁶ Joules = mass · (9 x 10¹⁶ m²/s²)
mass = (5 x 10²⁶ Joules) / (9 x 10¹⁶ m²/s²)
mass = (5 x 10²⁶) / (9 x 10¹⁶) kg
mass = (0.55... x 10¹⁰) kg
<em>mass = 5.55... x 10⁹ kilograms</em>
Look at that for a second. Then think about it for another second.
It's telling us that at its present rate of energy output, the sun is losing more than 5 and a half Billion kilograms of mass every second. And when we read other things about the sun, they say that the sun is expected to continue doing what it's doing for another 4 or 5 Billion years !
Gives ya some idea of the size and mass of the Sun, doesn't it !
We Know, W = F * s
Here, F = 90 N
s = 35 m
Substitute it into expression,
W = 90 * 35
W = 3150 Joules
So, your final answer is 3150 Joules.
Hope this helps!
The frequency of a beam of light does not change as it passes from a medium to another, only its wavelength and speed are affected. The experimental speed of light in air is:
3 * 10^8 m/s
Therefore, the frequency of this beam of light is:
v = fλ; where v is speed, f is frequency, and λ is the wavelength. The frequency thus is:
3×10⁸ / (670 × 10⁻⁹) = 4.48 × 10¹⁴ Hz
The frequency will remain the same in the solid medium
The speed will then become:
4.48 × 10¹⁴ × 420 × 10⁻⁹ = 1.88 × 10⁸ meters per second
Answer: Yes.
Explanation: Because of the crystalline structure.
