You are looking to find gravitational energy, the formula for that is (height)(weight)(acceleration due to gravity). In your case I️t will be (3)(2)(9.8)= 58.8 Joules
Hello, it is the wave period.
One wavelength is considered to be two successive crests, which makes the time taken by a wave to travel this distance the wave period.
Hope it helps!
The force of gravity gets stronger.
He had their masses and reactivity. I hope this helps.
Answer:
The frequency the motorcyclist hears is 601.60 Hz
Explanation:
The Doppler effect is a physical phenomenon where an apparent change in wave frequency is presented by a sound source with respect to its observer.
The following expression is considered the general case of the Doppler effect:
Where:
f ’, f: Frequency perceived by the receiver and frequency emitted by the emitter respectively. Its unit of measurement in the International System (S.I.) is hertz (Hz), which is the inverse unit of the second (1 Hz = 1 s-1)
v: propagation speed of the wave in the medium. It is constant and depends on the characteristics of the medium. In this case, the speed of sound in air is considered to be 34o m / s
vR, vE: Receiver and emitter speed respectively. Your unit of measure in the S.I. is the m / s
±, ∓:
The + sign is used:
- In the numerator if the receiver approaches the sender
.
- In the denominator if the emitter moves away from the receiver
.
The sign - is used:
- In the numerator if the receiver moves away from the sender
.
- In the denominator if the emitter approaches the receiver.
In this case:
- f: 523 Hz:
- v= 340 m/s
- vR= 13.6 m/s
- vE= 32.6 m/s
-
The emitter approaches the receiver, so the + sign is used in the numerator and the - sign is used in the denominator.
Replacing:
Solving:
f' = 601.60 Hz
<u><em>
The frequency the motorcyclist hears is 601.60 Hz</em></u>