Answer:
4.57 degree
Explanation:
As the dolphin is under water, so the angle is angle of refraction which is equal to 48.4 degree.
refractive index of water, n = 1.333
Let the angle of incidence which is the angle between the incident ray and the normal is i.
By use of Snell's law



i = 85.43 degree
Angle made with the horizon = 90 - 85.43 = 4.57 degree
I believe it is Acoustics, the real name for it would be like Reverberation. But go with Acoustics. :)
Answer:
A
Explanation:



hope it helped a lot
pls mark brainliest with due respect .
<span>Since the torque involves the product of force times lever arm, a small force can exert a greater torque than a larger force if the small force has a large enough lever arm.
With a large force exerts a small torque is a gate, hinged in its vertical line (axis). When pushed from a point near to the hinge, a very large amount is needed to open the gate.
</span><span>
</span>
Wouldn't everything fall?