A laser beam is reflected by a plane mirror. It is observed that the angle between the incident and reflected beams is 22 degrees. If the mirror is now rotated so that the angle of incidence increases by 4.0 degrees, what is the new angle between the incident and reflected beams?
Express answer in whole number.
0=___degrees

30°

Explanation:

The law of reflection tells us that when a ray of light hits and then gets reflects off a surface, the angle of incidence is equal to the angle of reflection.

Mathematically, from the law of reflection,

θ(i) = θ(r)

Also,

θ(i) + θ(r) = 2θ(i)since θ(i) = θ(r)

θ(i) + θ(r) = 22 + 2(4)

θ(i) + θ(r) = 22 + 8

θ(i) + θ(r) = 30°

Therefore, the new angle between the incident and reflected beams will then be 30°

gravity

explanation:

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer