The correct response is D. This is because light is reflected of the building onto the water that is hitting the building.
Answer:

Explanation:
The energy of the emitted photon is inversely proportional to its wavelength, according to the equation:

where
is the Planck's constant
is the speed of light
is the wavelength
This means that the biggest energy is released when the wavelength is the shortest. For a photon of visible light, the shortest wavelength is

So, substituting into the equation, we find the corresponding energy:

Answer:
1.65 m
Explanation:
The motion of the ball is a projectile motion, so it is a parabolic motion with two independent motions:
- on the x-axis, a uniform motion with constant speed 
- on the y-axis, a uniformly accelerated motion with constant acceleration
downward.
First of all, we need to find the time t at which the ball has travelled halfway to the chatcher, i.e. at a distance of
. This can be found by using the relationship between distance, time and velocity along the horizontal direction:

So now we can move to the vertical motion, and we can calculate the distance covered vertically by the ball while falling for t=0.58 s, by using:
