Answer:
We can easily find out the beginning point of the line by using dot representation.
Explanation: When it comes to position vector, it expresses the exact position of certain object from the starting point of the coordinate system. The vector is a straight line that has a certain end which is fixed to its body.
Answer:
2.7 J
Explanation:
The energy of one photon is given by

where
h is the Planck constant
f is the frequency
For the photons in this problem,

So the energy of one photon is

The number of photons contained in 1.0 mol is
(Avogadro number)
So the total energy of
photons contained in 1.0 mol is

Answer:
I cant fit the entire picture but this should help
Answer:
b
Explanation:
there is no net force on the basketball