What is the frequency of the train whistles

Assignment Help Physics
Reference no: EM131443518

1. Jane waits on a railroad platform while two trains approach from the same direction at equal speeds of 11.90 m/s. Both trains are blowing their whistles (which have the same frequency), and one train is some distance behind the other. After the first train passes Jane but before the second train passes her, she hears beats of frequency 6.50 Hz. What is the frequency of the train whistles?

2. Two point sources are in phase and emit a 406 Hz tone. What is the phase difference at a point that is 2.0 m from one source and 9.0 m from the other? (Take the air temperature to be 20°C.) in rad?

Reference no: EM131443518

Questions Cloud

Optional or discretionary benefits : All employee benefits that are not required by law are called optional or discretionary benefits. What are the broad categories of optional or discretionary benefits that employers may provide? Why do employers provide optional or discretionary b..
Describe the levels of data measurement : Define statistics with citation and reference. Contrast quantitative data and qualitative data - Evaluate tables and charts used to represent quantitative and qualitative data.
Explain how theoretical perspectives regard children : Explain how theoretical perspectives regard children and adults as active contributors to their own development. Cite evidence that both nature and nurture contribute to the development of individuals with mental disorders
Discuss piagets ideas about cognitive change : Discuss Piaget's ideas about cognitive change. Use the following concepts in your answer: scheme, adaptation, assimilation, accommodation, equilibrium, disequilibrium, and organization
What is the frequency of the train whistles : After the first train passes Jane but before the second train passes her, she hears beats of frequency 6.50 Hz. What is the frequency of the train whistles?
Electric field at the origin be zero : A +13 nC charge is located at (x,y)=(0cm,12cm) and a -4.0 nC charge is located at (x,y)=(6.0cm,0cm). Where would a -15nC charge need to be located in order that the electric field at the origin be zero?
What the strengths and weaknesses of the statistical test : What are the strengths and weaknesses of the statistical test that was used? What are the characteristics of the sample or the data collection method that should be taken into consideration when interpreting these results that you would mention bri..
What is the mass of the clay : A potter's wheel with rotational inertia 6.92kg⋅m2 is rotating freely at 19.3 rpm. The potter drops a lump of clay onto the wheel, where it sticks 48.0 cm from the rotation axis. With the clay on the wheel, the wheel's rotation rate is 17.4 rpm. ..
Describe schizophrenia by presenting the positive symptoms : Describe schizophrenia by presenting the positive and negative symptoms. Be sure to include and define the following terms: hallucination, delusion, social withdrawal, and flat affect in the proper context

Reviews

Write a Review

Physics Questions & Answers

  How much work did he do to life the car

The strongest person in the world lifted th read end of his car a mass of 615 kg a verticle distance of .24 meters. How much work did he do to life the car

  Describe possible algebraic signs and magnitude of charges

An unstrained horizontal spring has a length of 0.36 m and a spring constant of 290 N/m. Two small charged objects are attached to this spring, one at each end. The charges on the objects have equal magnitudes. Because of these charges, the spring st..

  Find the freezing point of water

The Ed-Scale defines the perfect temperature of a martini to be 8.0 degrees E and boling point of antifreese to bee 100 degrees E. Use this equation to find the freezing point of water in Eds

  Find the average velocity of car

A car makes a round trip for 100m in 10 seconds. What is the average velocity?

  Maximum voltage produced by the generator

An inductor (L = 400 mH), a capacitor (C = 5.30 μF), a resistor(R = 500 Ω) are connected in series. A 50.0 Hz AC generator connected in series to these elements producesa maximum current of 300 mA in the circuit.

  Compute the self-inductance of this solenoid

A technician wraps wire around a tube of length 33 cm having a diameter of 7.9 cm. compute the self-inductance of this solenoid

  Find th total horizontal distance traveled for the vault

from the top of a pole 4.8m about the ground, he was able to leave the pole with a speed of 4.82m/s at an angle of 7 degrees from vertical, find th total horizontal distance traveled for the vault

  Determine what is this scalars

It is possible to turn right handed unit co-ordinate system into a left handed unit system by multiplying all three unit vectors by one scalar determine what is this scalars

  Is the force attractive or repulsive

A 7.50-nC charge is located 1.80m from a 4.20-nC charge, find the magnitude of the electrostatic force that one particle exerts on the other

  Evaluate the heat absorbed during this expansion

An ideal gas expands isothermally, performing 4.1 x 103J of work in the process. Calculate the heat absorbed during this expansion

  What is the magnitude of contact force between the blocks

A 5 kg and a 3 kg box rest side by side on a smooth, level floor. What is the magnitude of the contact force between the blocks

  Compute how much work does the archer do in pulling the bow

An archer pulls her bowstring back 0.360 meter by exerting a force that increases uniformly from zero to 224 Newton. Compute how much work does the archer do in pulling the bow

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd