Answer:
168 Hz
Explanation:
The Doppler equation describes how sound frequency depends on relative velocities:
fr = fs (c + vr) / (c + vs),
where fr is the frequency heard by the receiver,
fs is the frequency emitted at the source,
c is the speed of sound,
vr is the velocity of the receiver,
and vs is the velocity of the source.
Note: vr is positive if the receiver is moving towards the source, negative if away.
Conversely, vs is positive if the receiver is moving away from the source, and negative if towards.
Given:
fs = 164 Hz
c = 343 m/s
vr = -15 m/s
vs = -23 m/s
fr = fs (c + vr) / (c + vs)
fr = 164 Hz (343 m/s − 15 m/s) / (343 m/s − 23 m/s)
fr = 168 Hz
Length is not a vector because you only need to state a unit (etc. meters, centimetres, or feet) and not a direction
Bandwagon advertising is basically persuading people to join something or buy something because, "everyone else is."
For example: "Vote for Charlie to be the class president! Everyone else is!"
The relationship between resistance and current in a circuit is that if either resistance or current increase, then voltage increases; or vice versa for that matter. Another part in their relationship, is that resistance multiplied by current equals voltage so in order to calculate voltage, you must have resistance and current. I hope this helps!
Kinetic energy = 1/2 mv^2
1/2 x 50 x 2.6^2
= 169J
