Answer:
<em>a person who sees laser light passing through a bucket full of water.</em>
Explanation:
According to relativity, the speed of light is the same irrespective of the relative speed between the source, and the observer. The only exception is when light travel from a less dense medium to a denser medium as in air into the bucket full of water. So the speed of light is slowest relative to the observer in the laser that passes through the bucket of water.
B 4.5/3.21 = 1.4
B 3600/2.95 = 1220
D 5.4*1000=1113.4/60=18.6
D 60*1.3=78*60=4,680*134=627,120
B 15.7*1000=15,700/18=872
<span>The area will be the square of the quotient of the amounts for each telescope. Comparing the two microscopes, the 8-meter model is 4 times larger than the 2-meter model. Squaring this value gives a ratio of 16 times the amount of visual area for the larger telescope.</span>
Answer:
It's A v=2pi/T
Explanation:
I took the test and got it correct.
Answer:
A) pbin = 1.535 Kgm/s (+)
B) pbf = 1.696 Kgm/s (-)
C) Δp = 3.3925 Kgm/s
D) Δvr = 10.249 m/s
Explanation:
Given
Mass of the ball: m = 57.5 g = 0.0575 Kg
Initial speed of the ball: vbi = 26.7 m/s
Mass of the racket: M = 331 g = 0.331 Kg
Final speed of the ball: vbf = 29.5 m/s
A) We use the formula
pbin = m*vbi = 0.0575 Kg*26.7 m/s = 1.535 Kgm/s (+)
B) pbf = m*vbf = 0.0575 Kg*29.5 m/s = 1.696 Kgm/s (-)
C) We use the equation
Δp = pbf - pbin = 1.696 Kgm/s - (-1.535 Kgm/s) = 3.3925 Kgm/s
D) Knowing that
Δp = 3.3925 Kgm/s
we can say that
Δp = M*Δvr
⇒ Δvr = Δp / M
⇒ Δvr = 3.3925 Kgm/s / 0.331 Kg
⇒ Δvr = 10.249 m/s
