The bending occurs because light travels more slowly in a denser medium.
It would be the 2nd one because the higher the farther away from the equator. <span />
Answer:
a=7.384 m/s^2
Explanation:
let T be the tension in the string, m= mass
and a= acceleration
from the FBD in the attachment we can write
Tcos37°= mg
Tsin37° =ma
dividing both the equations we get
tan37° =a/g
therefore a=g×tan37°
a= 9.81×0.7535 = 7.384 m/s^2
the magnitude of the acceleration a of the train = 7.384 m/s^2
Answer:
The block is moving 0.564 m/s after the bullet emerges it.
Explanation:
<u>Step 1:</u> Data given
Mass of the bullet m = 4.86 grams = 0.00486 kg
Initial speed of the bullet u = 306 m/s
Mass of the wooden block m' = 1.37 kg
Final speed of the bullet v = 147 m/s
Initial speed of the block u'= 0 m/s
Final speed of the block = v'
<u>Step 2:</u> conservation law of momentum
mu + m'u' = mv + m'v'
0.00486*306 + 1.37 * 0 = 0.00486*147 + 1.37*v'
1.48716 = 0.71442 + 1.37 v'
0.77274 = 1.37 v'
v' = 0.564 m/s
The block is moving 0.564 m/s after the bullet emerges it.