Potential energy is the energy possessed by a body by virtue of its position or configuration . And energy is the capacity of doing work since power is work divided by time therefore change in potential energy divided by time is equal to the power of the object.
Answer:
767.2 nm
Explanation:
The optical path for the reflection for the inner surface is:
For maximum wavelength, this distance has to be traveled doubled (The ray is normally incident). So,
Given that:
Thickness = 140 nm
So, wavelength is:
<u>Wavelength is 767.2 nm</u>
Answer:
B) 4/5
Explanation:
The magnitude of the electric force between the two spheres is given by
where
k is the Coulombs' constant
q1 and q2 are the charges on the two spheres
r is the distance between the two spheres
Initially, we have
So the force is
Later, the two spheres are brought together so they are in contact: this means that the total charge will redistribute equally on the two spheres (because they are identical).
The total charge is
So each sphere will have a charge of
So, the new force will be
And so the ratio of the two forces is
Answer:
Autobus porusza się ze stałą prędkością 54 km/h Oblicz w jakim czasie przebędzie drogę 450 m
Draw something similar to which has more mass in density. For example, a bowling ball and a volley ball. Both substances are similar in size but the bowling ball feels heavier than the volleyball. Label volleyball for less density and bowling ball with more density.