Answer:
Pi(3.14) radians or 180º degrees
Explanation:
First of all, we need to obtain the wavelength of a wave traveling to the speed of sound and 420 Hz of frequency.
The formula is:
where l = wavelength in meters
With current values:
l = 336 [m/s]/420[1/s] = 0.8 meters
Since a complete cycle (360º or 2pi radians) needs 0.8 meters to complete, 0.4 meters or 40 cm is just half of it, making a 180º degree phase or 3.14 radians.
I’ve had a question like this and i put c
Answer:
I hypothesis that the motion involving the balls in the experiment were moving to create data.
Explanation:
I hope this helps!
Answer:
Maximum starting velocity that the car can possess if the stuntman is to be successful = 50 m/s
Explanation:
We have equation of motion ,
, s is the displacement, u is the initial velocity, a is the acceleration and t is the time.
In this case, displacement = 100 meter, acceleration = -8
, time = 10 seconds, we need to find initial velocity.
Substituting
So, Maximum starting velocity that the car can possess if the stuntman is to be successful = 50 m/s
