Science

PhysicsQ&A LibraryA truck moving at 36 m/s passes a police car moving at 45 m/s in the opposite direction. If thefrequency of the siren is 500 Hz relative to the police car, what is the frequency heard by an observerin the truck after the police car passes the truck? (The speed of sound in air is 343 m/s.)a. 361b. 636С. 393d. 396e. 383Question

Asked Apr 25, 2019

467 views

Step 1

The speed of the truck is 36 m/s, the speed of the police car is 45 m/s, the frequency of the siren with respect to the police car is 500 Hz and the speed of the sound is 343 m/s. The truck and the car moves in the opposite direction.

Step 2

Doppler effect is the apparent change in frequency due to the relative motion of the observer.

Let *f'* be the observed frequency, *v* be the actual speed of sound, *v*0 be the velocity of the police car, *v*s be the velocit...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: If a pneumatic cylinder has a volume of 14 cubic inches at 1000 PSIG when the temperature is 85°F an...

A: Pneumatic cylinders are mechanical devices which use the power of compressed gas to produce a force ...

Q: In Figure (a) particles 1 and 2 have charge 38.0 μC each and are held at separation distance d = 4.7...

A: Given,

Q: A rock is tossed straight up with a speed of 26 m/s . When it returns, it falls into a hole 12 mdeep...

A: Write the kinematic relation between initial and final velocity

Q: A 500-kg cannon fires a 4.0-kg projectile with a velocity of 500 m/s relative to the ground. What is...

A: According to the law of conservation of momentum,

Q: In the figure R1 = 5.11 Ω, R2 = 15.3 Ω, and the ideal battery has emf ε = 12.4 V. (a) What is the ma...

A: The circuit diagram is given by:

Q: The current i through a 5.3 H inductor varies with time t as shown by the graph of the figure. The i...

A: Write the expression for the induced emf in a inductor.

Q: the sound in the united center during a Chicago Bulls basketball game in 1998 was seven times as int...

A: The decibel rating today = 89dB.The intensity of sound in 1998 is 7 times as that of today.

Q: Chapter 29, Problem 021 Your answer is partially correct. Try again. The figure below shows two very...

A: From the symmetry of the wires, the net magnetic field at point P is,

Q: A 600.00 N ballast is hung from the end of a wire of cross-sectional area 0.0000010 m^2. The wire st...

A: a)The stress on the wire is,