The frequency of bird chirping hear by hiran will be 1.77 kHz.
<u>Explanation:</u>
As per Doppler effect, the observer will feel a decrease in the frequency of the receiving signal if the source is moving away from the observer. So the shifted frequency is obtained using the below equation:

Here , c is the speed of sound, Vs is the velocity of source with which it is moving away. f is the original frequency of source and f' is the frequency shift heard by the observer.
As here, f = 1800 Hz, Vs= 6 m/s and c = 343 m/s, then

So, the frequency of bird chirping hear by hiran will be 1.77 kHz.
Properly input current above 40 voltage or 100 for example elecrical fan machine is used to perform a task, work output is always more than work
You may jump higher because the more the mass of the planet, the more gravitational force. There is less mass(and gravity) on Callisto so you wouldn’t be weighed down as much and can jump higher. Whereas on Jupiter there is more weight holding you down.
Answer:
B.) A disturbance that carries energy
Explanation:
The complete statement that describes a wave would be :
A wave is a disturbance that carries energy from one place to another
Other listed options are incorrect because:
Incorrect : A.) A collision of particles ---------> Conduction
Incorrect : C.) A movement of fluids ----------> Convection
Incorrect : D.) A group of electrically charged molecules ----------> Radiation
[ Correct on Edgenuity ]
Hope this helps you have a better understanding ! :D
Have a wonderful day !
Basically, when someone is resting in an accelerated vehicle without restraint from a seatbelt, the force of stopping the vehicle will be when inertia occurs, and that force of the vehicle coming to a stop will affect the passenger (without a seatbelt/restraint from another force or object) greatly by throwing them.
For example;
If I were to be riding in a vehicle (without a seatbelt) that's accelerating at 40 m/s^2 and it suddenly gets slammed on the breaks, I will be thrown forward from inside the vehicle.
I hope this helps!