. The speedometer readings of a car are shown below. Find the acceleration of the car and its displacement. Time
9:25 am
9:45 am
Speedometer
36 km/h
72 km/h

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Ответ:

kawaii266

11.01.2021

Physics

wavelength = 0.8989 m

Explanation:

Given data:

weight of wire is 8.25 g

length of wire is 65 cm

speed of sound in room is 344 m/s

time of returning of pulse is 7.84 ms

There are three time period

Time period $= \frac{7.84\times 10^{-3}}{3} = 2.6133\times 10^{-3} s$

$frequency = \frac{1}{T}$

$=\frac{ 1}{2.6133\times 10^{-3})} = 382.6579 Hz$

velocity = wavelength × frequency

wavelength $= \frac{velocity}{frequency}$

$= \frac{344}{382.6579}$

wavelength = 0.8989 m

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. The speedometer readings of a car are shown below. Find the acceleration of the car and its displacement. Time 9:25 am 9:45 am Speedometer 36 km/h 72 km/h