Instantaneous speed is the motion rate of object at a particular time period or moment. If we take an example of a cheetah who is running with speed of 80 miles per hour then it is his instantaneous speed because it is shown as in per hour speed
Speed is the rate something is moving, while velocity is the rate something is going in a given direction.
Ohm for resistance
Volt for potential difference
ampere for current
watt for power
coulomb for charge
kilowatt hour is for energy !
Answer: the frequency observed will be 1269.45hz
Explanation: according to the doppler effect,
Apparent frequency f' = (c/(c+u))*f
f = real freq of sound of moving sound source
c = speed of sound in air
u = speed of moving sound source
f' = (343/(343+33.6))*1395
f' = 1269.45hz
