Sound at air in STP travels at 343 m/s.
We also know the formula v=f lambda where v is the velocity, f is the frequency and lambda is the wavelength.
Substituting in values to this, we get:
343 = 256 * lambda
lambda = 343/256
=1.34 3sf
Aaand upon doing this, I realise your textbook wants you to assume the speed of sound to be 330m/s, right then, well changing the value to 330, we get 1.29m
I guess technically it does.
But the only reason I know of that it should is the relativistic increase
of mass with speed ... that's why we never notice the increase at
everyday speeds.
The effect gets larger at higher speeds. For example, if the car is
cruising through the neighborhood at 6.71 million miles per hour
(1% the speed of light), then its mass, and therefore its weight,
is 0.005% more than when it's sitting still at a red light.
Now, if the driver were to put the pedal to the metal and open 'er up
to 10% the speed of light, then the car's mass (and the driver's mass
too) would increase to a whopping 0.5% more than its 'rest mass'.
So you would definitely have to say that the vehicle does get heavier
as it speeds up.
Answer:
The longitude measures the distance east and west from the Prime Meridian.
Explanation:
Answer: Got it!
Explanation: The water in a river flows uniformly at a constant speed of 2.50m/s between two parallel banks 80.0m apart. You are to deliver a package directly across the river, but you can only swim at 1.5m/s.
Answer:
10.31 m
Explanation:
To find the result you have to use the formula: h = p / eg.
Where: e = 1000Kg/m^3 g=9.8m/s^2 p= 1.01 * 10^5 Pa
The calculation will be:
h= 1.01 * 10^5 / (1000kg/m^2) * (9.8m/s^2)
h= 10.31 m