Answer:
Explanation:
= Displacement =
= Time taken =
Velocity is given by
The person is able to run at a speed of in order to complete the race in the given time.
The energy that stars radiate originates as nuclear energy. The core of
a star is a place where the pressure and temperature are so enormous
that hydrogen nuclei are fused into helium nuclei ... the same process
that causes the explosion of a "hydrogen" bomb.
In meters per second, the singer is traveling ...
... 83 km/h × (1 h)/(3600 s) × (1000 m)/(1 km) ≈ 23 1/18 m/s
Then the observed frequency is ...
... f' = 343/(343 -23.056)·700 Hz ≈ 750.4 Hz
Choice-D is the correct description of the longitudinal sound wave.