A wave strikes a barrier at 40 degrees with respect to the normal,and then reflects off the barrier at _______ degrees.

Q: The motion detector used in a physics lab sends and receives 39 kHz ultrasonic pulses. A pulse goes…

A: Given data: Frequency, n = 39 kHz Temperature, T = 20oC (The velocity of ultrasonic wave at 20oC is…

Q: A small vibrating object on the surface of a ripple tank is the source of waves of frequency 20 Hz…

A: The frequency measured by a stationary observer at point C will be greatest . Therefore option- 4.C…

Q: What are the three longest wavelengths for standing sound waves in a 84-cm-long tube under the…

A:

Q: A scientist wants to identify a wave as mechanical or electromagnetic. Which medium should the wave…

A:

Q: What is the wave length, in fm (centimeters, or 10^-15 m), of a proton traveling at 90% of the speed…

A: The de-Broglie wavelength of  relativistic particle moving with relativistic speed v of rest mass m0…

Q: The intensity of a spherical waves decreases as the wave moves away from the source. If the…

A: Intensity of spherical wave Ir=I0r2

Q: In a tube, standing-wave modes are found at 200 Hz and 400 Hz. The tube could not beA. Open-closed.…

A: Different modes of vibrations

Q: wave is 45 kHz and the speed of wave is 300 m/s . Find the wavelength

A: The frequency of the wave is f = 45 kHz  The speed of the wave is v = 300 m/s  Find:-  The…

Q: A periodic wave has a rfrequency of 9.2 HZ what is the wave period?

A: Given  frequency=9.2Hz Now recall T=1/f

Q: At 0 degrees C, waves move through a medium _____ than the waves moving through same medium at 20…

A: Velocity of a wave vw α T That is the wave move faster at higher temperature .

Q: The diagram below shows two points, A and B, on a wave train. If A and B are 2.25 cm apart then find…

A: Given Distance between point A and B d = 2.25 cm     The wavelength is equal to 2/3 time the…

Q: The diagram below shows two points, A and B, on a wave train. If A and B are 2.25 cm apart then find…

A: At one wavelength the wave will complete the cycle once. From A to B the wave completes 1.5 cycle.…

Q: he following graph figure I shows the variation of a dependent variable, Y plotled as ordinate…

A: Since you have asked multiple subparts, we will solve the first three for you. If you want a…

Q: A pipe open at both ends has two standing wave lengths of 1.5 meters and 1 meter with no standing…

A: Given data: The first standing wave length is L1=1.5 m The first standing wave length is L2=1 m…

Q: How much more intense is sound at 40dB than sound at 0dB?

A: The relation between intensity of sound and threshold is given as, Where, Io = intensity at 0 dB I…

Q: A DJ is setting up their equipment and measures the sound level near a speaker to be 44.72dB. They…

A: Given,

Q: If a wave strikes a surface with an angle of 30⁰ with respect to the normal, what is the angle of…

A: If a wave strikes a surface with an angle i with the normal, then it will be reflected at an angle…

Q: The path difference between two waves is 6m. If the wavelength of the waves emitted by the two…

A: We have the relation: phase difference=2πλ×path difference

Q: A radio station broadcasts on a wavelength of 3.11 m. What is its frequency if the wave’s speed is 3…

A:

Q: Jo and Em are both standing different distances from a speaker that is outputting sound uniformly in…

A:

Q: How fast should you move away from a 6.0 x 1014 Hz light source to observe waves with a frequency of…

A: From the doppler effect, the expression for the wavelength is: Substitute the known values and…

Q: A plane wave encounters a small opening. Upon passing through the small opening the plane wave gets…

A:

Q: A musical note on a piano has a frequency of 40 Hz of the tension in the 2-m string is 308N and one…

A:

Q: The path taken by a wave in one period is: O wavelength frequency period wave peak dip

A: This question is based on Waves topic. Wave is propagation of disturbance i.e. momentum and energy…

Q: If a wave strikes a surface with an angle of 37 with respect to the normal, what is the angle of…

A:

Q: A woman competing in a fishing tournament sits in a 6 meter long fishing boat that is 0.70 m high.…

A:

Q: What is frequency of a wave having a wave length of 613 nm?

A: Write the expression for the frequency. Here, c represents the speed of light and λ represents the…

Q: A stick begins by standing straight up in a glass before it's leaned to the side.  You're looking…

A: During its straight position angle of refraction is equal to zero that's why only reflection…

Q: If 100 waves pass through a mediumin 20 seconds and their wavelength is 6cm then velocity is

A: Given, 100 waves pass through a medium in 20 seconds wavelength = 6cm = 0.06 m We know that velocity…

Q: This is possibly a different atmosphere from ours.  In any case, the speed of sound is…

A: When lightning flashes, we see its light first while its sound is heard after some time. This…

Q: A man and a dog observe in the distance a loud nuclear explosion producing a sound having an…

A:

Q: The wavelength of a progressive wave is 3.4 m. What is the phase difference between two points which…

A:

Q: The sound of a weight dropping to the ground is 87 sec. What is the frequency of the sound wave for…

A: Frequency of the wave is the inverse of time, f = 1/ t = 1/87s = 1.149 *10-2 hertz

Q: A Kundt's tube apparatus has a copper rod of length 1.0 m clamped at 25 cm from one of the ends. The…

A: Speed of sound in air,

Q: Where is the energy of a vertically projected body maximum?

A: When the object reaches its maximum height, the potential energy of the object is at its maximum…

Q: Two identical loudspeakers are placed on a wall 3.00 m apart. A listener stands 5.00 m from the wall…

A: To determine: For two identical loudspeakers, find (a) The phase difference between the waves from…

Q: wave has a wavelength of 5.0mm and frequency 2.0 kHz . What is the wave speed in m/s?

A:

Q: A 1,720-Hz tone is played on a stereo in an open field. A person stands at a point that is 4 m from…

A: Path difference between sound waves on reaching the person; x= 4.4-4 x=0.4m Wavelength of sound…

Q: If wave of wavelength=100m in deep water is observed from a moving ship with constant speed of 7m/s.…

A: Given Data: The wavelength of the wave is: λ=100 m The constant speed of the wave is: v=7 m/s

Q: How much more intense is sound at 40dB than sound at 30dB?

A: The intensity of a 40-dB sound,

Q: An observer standing at a sea coasts observes 54 waves reaching the coast per minute. If the…

A: The speed of the wave is

Q: Write your understanding about coherent waves. A steel wire in a piano has a length of L = 0.9m and…

A: Two waves are said to be coherent if their phase difference is either zero with time or space.

Q: 1,720-Hz tone is played on a stereo in an open field. A person stands at a point that is 4 m from…

A: Given  Frequency = 1720 Hz Speed of Sound = 343 m/s

Equation of Waves

Wave is an oscillation or disturbance traveling in a medium. It performs the transportation of energy but does not carry any matter. This motion of waves will transport fuel in a medium without permanent transfer of mass (particle).