I believe your answer is d).
Hope you find this helpful! :)
Answer:
u= 35.30 s
Explanation:
given,
horizontal distance covered by the ball = 105 m
vertical distance to clear by the ball = 4 m
angle at which the ball was hit = 31°
Let the initial velocity is u m/s and the ball take t sec to reach the fence.
ut = 122.5
Using
t = 3.47 s
now,
u= 35.30 s
Speed of the ball when it leaves the bat u= 35.30 s
<h3>Answer: 22.48°</h3><h3 /><h3>Explanation:</h3>
refractive index = sin i / sin e
where i is the angle of incidence
e is the angle of refraction
1.5 = sin 35 / sin e
1.5 = 0.5736/sin e
sin e = 0.5736/ 1.5
sin e = 0.3824
e = 22.48°
<h3 />
Higher pitched sounds produce waves which are closer together than for lower pitched sounds. A smaller triangle or cymbal will make a relatively higher pitch note