Answer:
0.139 rad
Explanation:
We use Snell's law , where if is the <em>refractive index</em> of the medium containing the <em>incident ray</em>, would be the <em>incident angle</em>, and if is the <em>refractive index</em> of the medium containing the <em>refracted ray</em>, would be the <em>refraction angle</em>, which we want, so we do:
And finally:
We then insert our values:
Explanation:
We can solve the problem, either using graph or equation, as per our liking :
u = 12 m/s
v = - 8 m/s
t = 5 sec
(1) v = u + at
-8 = 12 + 5a
<u>a = - 4 m/s^2 </u>
<u>(</u><u>2</u><u>)</u> S = ut + 1/2 * a * t^2
S = 12 * 5 - 2 * 25
<u>S (Distance travelled) = 10 m</u>
Answer:
they both are electromagnetic waves
32t + 148 = 0148 = 32t4.625 = tt ≈ 4.63h = -16 • (4.625)^2 + 148 • 4.625 + 30 = 372.25
ANSWER: is D. 4.63 sec; 372.25 ft
2.) 2x - 4 = 0 and 2x - 1 = 0x = {4/2, ½}x = {2,½} ANSWER: is B 2, 1 over 2
(18 gallon/tank) x (23 mile/gallon) = <em>414 mile/tank</em>