B) scattering of light by air molecules
Air molecules have a significance size that enables the to scatter blue part of white liight from sun.
This produces the illusion that sky is blue
Answer:
Correct answer: m = 1,160 kg
Explanation:
Given:
P = 104 hp = 77.48 kW = 77.48 · 10³ W
V₁ = 21 m/s Initial speed (velocity)
V₂ = 29 m/s Final speed (velocity)
t = 3 seconds The time interval during which the work was performed
m = ?
The formula for calculating power is:
P = A / Δt
Since work is a measure of energy change in this case kinetic:
P = ΔEk / Δt = (Ek₂ - Ek₁) / Δt = (m V₂²/ 2 - m V₁²/ 2) / Δt
P = m · (V₂² - V₁²) / 2 · Δt ⇒ m = (2 · P · Δt) / (V₂² - V₁²)
m = (2 · 77.48 · 10³ · 3) / (29² - 21²) = 464.88 · 10³ / (841 - 441)
m = 464.88 · 10³ / 400 = 1.16 · 10³ = 1,160 kg
m = 1,160 kg
God is with you!!!
It could be the third and the first one.
The appropriate response is the negative charge owing fascination of positive charge of the plastic street. Particles are comprised of protons, neutrons, and electrons. Neutrons are unbiased and don't have any charge whatsoever. Protons convey a positive charge, and electrons convey the negative charge. At the point when a question has a positive charge, it has a bigger number of protons than electrons.