Answer:
B
Explanation:
While answer C may sound correct, Answer B is makes more sense. We know you cant use High-beam lights when u cant see ongoing traffic because it could affect the other driver coming across from you. Its good to use it when legal and safe, but in that term I still don't believe there's no reason for HIGH-beamed. That's this leaves B, when you are on u lighted streets.
Answer:
The angle of elevation of the Sun = 41.8°
Explanation:
Let the angle of elevation of the sun be θ
Using trigonometric relations,
Tan θ = opp/adj
opp = the height of the Washington Tower = 555 ft
adj = the length of the shadow = 620 ft
Tan θ = (555/620) = 0.8952
θ = Tan⁻¹ (0.8952) = 41.8°
Hence, the angle of elevation of the Sun = 41.8°
Answer. Second Option: .85p_o=p_o e^-.00012h
Solution:
P(h)=Po e^(-0.00012h)
Air pressure: P(h)
Height above the surface of the Earth (in meters): h
Air pressure at the sea level: Po
Height at which air pressure is 85% of the air pressure at sea level:
h=?, P(h)=85% Po
P(h)=(85/100) Po
P(h)=0.85 Po
Replacing P(h) by 0.85 Po in the formula above:
P(h)=Po e^(-0.00012h)
0.85 Po = Po e^(-0.00012h)
Explanation:
We can conclude that De Broglie's hypothesis is true. In this hypothesis the concept of matter wave was introduced, establishing that electrons have wave-like properties. Thus, all matter exhibits properties of both particles and waves, that behave in one way or another depending on the specific experiment.
