Answer:
147.456077993 Hz
Explanation:
= Frequency of the sonar = 22 kHz
= Velocity of the whale = 4.95 m/s
v = Speed of sound in water = 1482 m/s
The difference in frequency is given by
The difference in frequency is 147.456077993 Hz
Explanation:
The momentum of an object is given in terms of its mass and its velocity. The law of conservation of momentum says that the net momentum of a system remains conserved for an isolated system.
Momentum is given by :
p = m × v
If p is conserved, velocity is inversely proportional to the mass of an object. When mass changes, velocity also changes but inversely.
It depends on the size, material, shape, etc.
Answer: 258.3 s
Explanation:
The speed 
is given by the following equation:
Where:
is the speed of light in vacuum
is the double of the distance between Earth and Moon, since the beam of light travels from Earth to the Moon and back to Earth again.
is the time it takes to the beam of light to travel the mentioned distance
Isolating and solving with the given information:
Finally:
