'An ambulance with a siren emitting a whine at 1200 Hz is catching up to a cyclist pedalling a bike in the same direction at 2.80 m/s. Before being passed, the cyclist hears a freqency of 1261 Hz. There is a wind of 10.0 m/s helping the cyclist along. The speed of sound in air is 343 m/s...
it doesn't ask for the angular frequency, it asks for the frequency,
its acctually a multiple choice question giving me answers :
1.11 Hz
.501 Hz
1.21 Hz
.996 Hz
.736 Hz
to chose from :(
'A block is attached to a vertical spring whose spring constant is 150 N/m. It is droped from rest with the spring at its natural length, and the block has a speed of 75.0 cm after droping a distance of 8 cm. Calculate the mass of the block.'
Now i know k = 150. v = 0.75 and x = 0.08. I also...