# An electromagnetic wave strikes a 3.00-cm2 section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 6.00 10-4 T. How long does it take for the wave to deliver 1000 J of energy to

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### College Physics 2056

An electromagnetic wave strikes a 3.00-cm2 section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 6.00 10-4 T. How long does it take for the wave to deliver 1000 J of energy to the wall?

### physics

The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.90 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.20 m2. How much energy does this wave carry through the window during a ...

### physics

The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.90 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.20 m2. How much energy does this wave carry through the window during a ...

### Physics

The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.7 × 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.23 m2. How much energy does this wave carry through the window during ...

### College Physics

A radio station with a power of 20 kW sends out an omnidirectional wave at 1.25 MHz. a. If the electromagnetic wave has an electric field of 0.22 V/m, what is the magnetic field amplitude? b. What is the intensity of the wave at 5 km? c. What is the wavelength of the ...

### physics

An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is S = 1.13 109 W/m2. What is the rms value of each of the following fields in the electromagnetic wave emitted by the laser? (a) electric field (b) magnetic field

### Physics

An industrial laser is used to burn a hole through a piece of metal. The average density of the light is S = 1.22 109 W/m2. What is the rms value of each of the following fields in the electromagnetic wave emitted by the laser? (a) the electric field _________N/C (b) the ...

### physics

An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.7 x 10^-6 T. What is the intensity S of the wave?

### physics

In a given electromagnetic plane wave the maximumelectric field strength is 400 V/m. What is the maximum magnetic field strength? How does the energy stored in the magnetic field compare with the energy stored in the electric field at any given time? how do you calculate the ...

### physics

What is the rms value of the electric field in a sinusoidal electromagnetic wave that has a maximum electric field of 64 V/m?

### Physics

1)An electromagnetic wave is produced by: an accelerating charged particle or changing magnetic fields. 2)Find the period of an electromagnetic wave of wavelength 2.20 x 10^-2 m. 3.00 x 10^8 * 2.20 x 10^-2 = 6.60 x 10^6 s

### Physics

A stationary particle of charge q = 1.4 10-8 C is placed in a laser beam (an electromagnetic wave) whose intensity is 3.5 103 W/m2. Determine the magnitudes of the (a) electric and (b) magnetic forces exerted on the charge. If the charge is moving at a speed of 3.7 104 m/s ...

### Physics

The magnetic vector of a plane electromagnetic wave is described as follows: B⃗ =Bmxˆsin[13 rad/m z− 3.90e9 rad/sec t] where Bm>0. This represents the full magnetic field, so that By=Bz=0. (a) What is the wavelength λ of the wave, in meters? (b) What is ...

### Physics repost please check

Posted by Mary on Monday, November 5, 2007 at 8:21pm. Suppose that the electric field of an electromagnetic wave decreases in magnitude. Does the magnetic field increase, decrease, or remain the same? Account for your answer. For Further Reading Physics - bobpursley, Monday, ...

### Physics

An electromagnetic wave in a vacuum traveling in the +x direction generated by a variable source initially has a wavelength of 2.65 x 10^-4 m and a maximum electric field Emax in the +y direction of 8.20×10^−3 V/m. What are the coefficients in the equation for the ...

### Science

what is an electromagnetic wave comprised of? Electromagnetic waves consist of electric and magnetic fields in which each kind of field generates the other to keep the structure propagating through empty space at the speed of light.

### Physics

Suppose that the electric field of an electromagnetic wave decreases in magnitude. Does the magnetic field increase, decrease, or remain the same? Account for your answer.

### Science

1. Compare the two light waves above. Which wave would produce the brightest light and which wave would have the least energy? (1 point) a. wave A; wave A b. wave A; wave B c. wave B; wave A d. wave B; wave B Is it C?

### 7th grade Science

What is the relationship between energy and the wavelength of an electromagnetic wave? I really need help because I know that the shorter the wavelength of an electromagnetic wave, the higher the frequency of the wave..but I don't know how this is relevant to energy. Thanks x

### Physics

The electric and magnetic fields of a plane electromagnetic wave are given by the formulas below, where and are both in meters and is in seconds. This wave is traveling through a medium whose index of refraction is 1.3. Reminder: The "x.xxenn t" notation in the sine functions ...

### chemistry

A traveling wave is produced on a rope. The wave travels until it hits a wall and it is reflected. If the speed of the wave is 1.8 m/s and it takes 3.3 s to get back to the starting point, how long (m) is the rope.

### PHY

A traveling wave is produced on a rope. The wave travels until it hits a wall and it is reflected. If the speed of the wave is 1.8 m/s and it takes 3.3 s to get back to the starting point, how long (m) is the rope.

### Science

Which type of seismic wave causes rock particles to move in the same direction as the wave movement? a. P-wave b. S-wave c. tension wave d. shear wave

### Physics!!

An electromagnetic wave is produced by: A. an accelerating charged particle or changing magnetic fields B. an accelerating uncharged particle and changing magnetic fields C. a stationary charged particle and a magnetic field D. any moving particle and a magnetic field I think ...

### Physical Science 8th Grade

1. What is the resulting direction of a surface wave? Is it perpendicular, parallel, opposite, or circular? 2. What happens when a mechanical wave travels through a medium? What is transferred - mass, particles, energy, or waves? 3. Which of these waves cannot travel in a ...

### 8th grade science

I'm not sure what's the correct answer: 9)Which of these characteristics can only be attributed to a wave of red light? A)The energy of the wave travels in the same direction as the wave travels. B)The wave travels by vibrating the particles of the medium at a high rate. C)The...

### science- physics

when a wave strikes a boundary that is less dense than the original wave medium, the wave comes back a) upright b)inverted thank you!

### Physics

A transverse wave is formed on a long skipping rope. The equation of the transverse wave is y=5.50 sin(0.031π x+5.52π t) where x and y are in centimeters, t is in seconds, and Π is pi (3.14..). Find the amplitude of the wave? what is the wavelength of the transverse wave? ...

### physics

A wave on a string has a wave function given by y(x, t) = (0.0210 m)sin[(6.91 m^−1)x + (2.38 s^−1)t . (a) What is the amplitude of the wave? (b) What is the period of the wave? (c) What is the wavelength of the wave? (d) What is the speed of the wave?

### physics

1. A sound is made by a speaker, which then radiates in all directions. The sound wave is described by A(r) sin(2r - 600t) where the distances are in meters, and the time in seconds. The A(r) just indicates that the amplitude has some distance dependence--it decreases smoothly...

### Physical Science

An ultrasonic wave in water is a compression wave that travels at 1,400 m/s A) An ultrasonic wave from a ship travels to the bottom of a lake and back in 0.16s. How deep is it at this point? B) If an ultrasonic wave is emitted in the ocean where the ocean's depth is 3.5km, how...

### physics

A laser emits 1.42 1018 photons per second in a beam of light that has a diameter of 1.82 mm and a wavelength of 524.0 nm. Determine each of the following for the electromagnetic wave that constitutes the beam. (a) the average electric field strength (b) the average magnetic ...

### Physics

If the magnetic field in a traveling EM wave has a peak value of 17.9nT, what is the peak value of the electric field strength?

### physics

When does a magnetic field induce maximum EMF in a wire moving with a constant velocity? A. When the wire is moved at an angle of 60 degrees to the direction of the magnetic field B. When the wire is moved at right angles to the magnetic field C, When the wire is moved ...

### Physics!!!

When does a magnetic field induce maximum EMF in a wire moving with a constant velocity? A. When the wire is moved at an angle of 60 degrees to the direction of the magnetic field B. When the wire is moved at right angles to the magnetic field C, When the wire is moved ...

### Physics HELP!!

a). What is the wavelengh of a 2.54MHz ultrasound wave travelling through aluminum?(the speed of sound in aluminum is 6420 m/s) b). What frequency of electromagnetic wave would have the same wavelength as the ultrasound wave above?

### physics need help anybody

The equation y=As in(wt-kx)represents a plane wave traveling along the x-direction. If a=0.10m, w=8500hz and k=25/secs......Calculate the speed of the Waves -Calculate the speed of the medium through which the wave is travelingl -What is the equation of the reflected wave ...

### science help pls pls

Infrared radiations are produced when a changing electric field creates a longitudinal wave parallel to it longitudinal wave perpendicular to it changing magnetic field parallel to it changing magnetic field perpendicular to it is it d pls help me

### sir damon i need u help physics

The equation y=As in(wt-kx)represents a plane wave traveling along the x-direction. If a=0.10m, w=8500hz and k=25/secs......Calculate the speed of the Waves -Calculate the speed of the medium through which the wave is travelingl -What is the equation of the reflected wave ...

### chemistry

an electromagnetic wave has a frequency of 10 exponent 21hz. what type of electromagnetic wave has this frequency

### Geology

I am totally confused, need to come up with the Arrival Time of P Wave, S Wave Love Wave and Rayleigh Wave and distance from epicenter for LA and Austin when I am only supplied with the following info for Urbana: 3400 miles from Epicenter P Wave arrive 05:44:00 S wave arrive ...

### physics

The wavelength of an electromagnetic wave is measured to be 600 m. What is the frequency of the wave?

### physics

A laser emits 1.44*10^18 photons per second in a beam of light that has a diameter of 1.98 mm and a wavelength of 524.5 nm. (a) Determine the average electric field strength (b) Determine the average magnetic field strength for the electromagnetic wave that constitutes the beam.

### Physics

1)An electromagnetic wave has a wavelength of 6.2 x 10^14 n. What is the frequency of the wave? 3.00 x 10^8 * 6.2 x 10^14 1.8 x 10^24 = frequency 2)The velocity of an electromagnetic wave depends on: its wavelength and frequency

### Physics

A wave solution to Maxwell's Equations is given by E⃗ =E0xˆcos(5.0 z)cos( 1.03e11 t) where z is measured in centimeters and t in seconds. (a) What is the wavelength (in rad/meter) of the wave? (b) What is the index of refraction, n, of the medium? (c) The associated ...

### Physics

An electromagnetic wave has a frequency of 2.04 x 10^12 Hz, What is the wavelength of this EM wave?

### Physical Science

1. To what is amplitude related? B. the maximum displacement from the rest position C. neither A nor B D. both A and B 2. Suppose two waves collide and the temporary combined wave that results is smaller than the original waves. What term best describes this interaction? A. ...

### Physics

Suppose a light wave is in the visible spectrum, with frequency 740 THz(which will have a deep purple color). What will be the ratio of the electric to magnetic fields constitute the light wave? What fraction of the total energy is conveyed by the electric field?

### Physics

The following wave function represents a travelling wave: y = 5.35 / [4.95 + (6.55x+2.15 t )2] where y and x are in cm, and t is in seconds.a) What is the maximum displacement of the wave at t = 4.30 s ? b)What is the wave velocity?

### Physics

The wave is travelling to the right at 50.0 m/s. What is the amplitude if the maximum displacement is 38.0 cm and the total distance travelled by the wave is 16.0 m. 2) What is the wavelength of the wave? 3)What is the frequency of the wave?

### Science

9. FM signals travel as changes in (1 point) A.the speed of the wave. B.the amplitude of the wave. C.the frequency of the wave.*** D.the loudness of the wave.

### Physical science

A wave travels along a string at a speed of 1,5m 1s.if the frequency of the source of the wave is 7,5hz,calculate:(a)the wavelength of the wave..(b)the period of the wave

### Physics HELP!!

The wave is travelling to the right at 18.2m/s. What is the amplitude if the maximum displacement is 19.9cm and the total distance travelled by the wave is 41.2m? b) What is the wavelength of the wave? c).What is the frequency of the wave?

### Physics-help please!

A wave on a rope is 6.1m . a.) What is the wavelength of this wave? b.) If the frequency of the wave is 6.2Hz, what is the wave velocity?

### physics question

What factors affect the frequency of a wave? A. the amplitude B. the energy of the wave C. the wavelength of the wave D. the material through which it travels E. the velocity of the wave I said C,D, and E. Should there be anything else?

### Science

When a sound wave passes from air into a solid object, which of the following wave properties change? -frequency -wave speed -amplitude -wave length Can be more than one

### Physics

Physics Question Please Help? A wire, 20.0 m long, moves at 4.0 m/s perpendicularly through a magnetic field. An EMF of 40V is induced in the wire. What is strength of the magnetic field?

### Physics

Two waves are combined to form this standing wave equation of y(x,t) = (3 mm)sin[x/(2 m]cos[(100 rad/s)t] a. What's the amplitude of the right moving wave and left moving wave? b. What's the wavelength of the right moving wave and left moving wave? c. What's the velocity of ...

### Physics

Two waves are combined to form this standing wave equation of y(x,t) = (3 mm)sin[x/(2 m]cos[(100 rad/s)t] a. What's the amplitude of the right moving wave and left moving wave? b. What's the wavelength of the right moving wave and left moving wave? c. What's the velocity of ...

### Physical Science

1. A wave has a wavelength of 10 mm and a frequency of 5.0 hertz. What is its speed? A. 50 mm/s B. 50 hertz/s C. 2.0 mm/s D. 0.50 mm/s 2. Which type of mechanical wave needs a source of energy to produce it? A. a transverse wave B. a longitudinal wave C. a surface wave D. all ...

### Physics

Suppose that a police car on the highway is moving to the right at 20 m/s, while a speeder is coming up from almost directly behind at a speed of 31 m/s, both speeds being with respect to the ground. The police officer aims a radar gun at the speeder. Assume that the ...

### saint joshef

Given a planar electromagnetic wave in vacuum whose B-field is denoted by Bx = 0, Bz = 0, B_y = 66.7 × ?10?^(-8) sin 4?p?10?^6 (z-3×?10?^8 t) Write an expression for the E-field. What are wavelength, speed and direction of motion of the disturbance?

### Physics

A particle with a charge of -4.5 x 10-5 C, a mass of 2.5 x 10-7 kg, and a velocity of 7.0 x 10-5 m/s [E] is traveling perpendicularly through an external magnetic field such that the force of gravity is balanced by the magnetic force. Determine the direction and magnitude of ...

### Science

P: If wave a has an amplitude of 3 meters then inteferes wiht wave b that has an amplitude of 2 meters. the sum of te waves produce wave c with 5 meters Q:what is the wave interaction explain? P<S: I really want to know what are the 4 basic types of wave interections. Thank...

### physics

The figure below represents a periodic wave. Each increment on the equilibrium line is 760 cm. What is the wavelength for this wave (in m)?If the wave in the figure above has a frequency of 60 Hz, what is the wave's speed?

### Physics HELP!!

A snapshot graph of a travelling wave is shown. The wave is travelling to the right at 18.2m/s. What is the amplitude if the maximum displacement is 19.9cm and the total distance travelled by the wave is 41.2m? b). What is the wavelength of the wave?

### physics#46

We know that the source of a sound wave is a vibrating object. What is the source of an electromagnetic wave?

### Physics

A water wave with a wavelength of 35.6 cm approaches a wall with a large opening in it. The hole begins to close. What size does the hole in the wall need to be for the wave to noticeably diffract through the hole? Justify your answer.

### Physics

A charged particle with mass m, charge |q|=6.4 ×10−19C and speed v=3 ×106 m/s enters from the bottom of the figure and traces out the trajectory shown in the fields shown. The only electric field E=5 ×103 V/m is in the region where the trajectory of the charge is a ...

### Science

P: If wave a has an amplitude of 3 meters then inteferes wiht wave b that has an amplitude of 2 meters. the sum of te waves produce wave c with 5 meters Q:what is the wave interaction explain? Also m,ay you explain what destructive inteference is and constructive interference...

### physics

A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t = 0.175 s. ? b)... the ...

### physics

A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t = 0.175 s. ? b)... the ...

### physics

A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t = 0.175 s. ? b)... the ...

### university

A surfer is catching a wave. Suppose she starts at the top of a wave with a speed of 1.37 m/s and moves down the wave until her speed increases to 9.90 m/s. The drop in her vertical height is 2.64 m. If her mass is 63.3 kg, how much work is done by the (nonconservative) force ...

### Physics

A surfer is catching a wave. Suppose she starts at the top of the wave with a speed of 1.3 m/s and moves down the wave until her speed increases to 8.0 m/s. The drop in her vertical height is 2.8 m. If her mass is 59 kg, how much work is done by the (nonconservative) force of ...

### Physics

At the upper surface of the earth's atmosphere, the time-averaged magnitude of the Poynting vector is referred to as the solar constant and is given by </S/>=1.35×103W⋅m−2 . (a) If you assume that the sun's electromagnetic radiation is a plane sinusoidal ...

### Physics

At the upper surface of the earth's atmosphere, the time-averaged magnitude of the Poynting vector is referred to as the solar constant and is given by </S/>=1.35×103W⋅m−2 . (a) If you assume that the sun's electromagnetic radiation is a plane sinusoidal ...

### physics

A plane progressive wave is represented by the wave equation: y=0.1sin(200 ðt-20ðx/17) Where y is in millimetres, t is in seconds, and x is the distance from a fixed origin, O, in metres. Find: The frequency of the wave The wavelength of the wave The speed of the wave...

### Physics

Question:In the field of telecommunications, sound waves are sent to faraway places with the help of a kind of electromagnetic wave. Explain, by using a block diagram, how sound waves can be transmitted over long distances.

### Physics to Elena

At the upper surface of the earth's atmosphere, the time-averaged magnitude of the Poynting vector is referred to as the solar constant and is given by </S/>=1.35×103W⋅m−2 . (a) If you assume that the sun's electromagnetic radiation is a plane sinusoidal ...

### science

A bird sits on a pole and watches waves. The wave crests are 1.0 meter apart. If one wave crest passes the pole each second, what is the speed of the wave? . What is the period of the wave? . What is the frequency of the wave? . If the waves change so that the distance between...

### physical science

A disturbance sends ripples across water in a tub. These ripples are an example of a? rarefaction longitude wave compression surface wave (my choice) Sound is an example of what kind of wave? transverse wave longitude wave surface wave wavelength (my choice) Waves carry -- ...

### physics please helpp

A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t = 0.175 s. ? b)... the ...

### Precalc/Trig

wave is modeled by the function ... h(t) = 3cos(p/10)*t What is the period of the wave (T) *frequency (F) is defined as the number of cycles of the motion per second. What is the relationship between F and T? Find the wave height (H) which is the vertical distance between the ...

### science

two waves are traveling through the a container ofnitrogen . the amplitude of the first wave is .3 cm and the amplitude of the second wave is .9 cm. what is true about the two waves? a. the energy of the first wave is less than the second wave. b. the energy of the first wave ...

### Physics (please check)

Please let me know if my answers are not correct/not thorough enough. 1) Q:What happens when the number of loops in the armature of a generator is increased? 1) A:More loops= more voltage _________________________ 2) Q: Why does a piece of iron behave like a temporary magnet ...

### high school physics

a string 180 cm long resonates in a standing wave that has 3 segments when driven by a 270hz vibrator. What is the speed of the waves on the string? (answer in book 324 m/s) frequency = 270 hz segments of wave = 3 v= f x wave I don't know what to do.... help....thanks

### Please help check physical science!

Please help check my answers I really want to make a 100%! 1. A mechanical wave moves through a medium, which can be (1 point) A. a liquid. B. a solid. C. a gas. D. all of the above <-- This one 2. Which type of kind of wave causes the medium to vibrate only in a direction ...

### Physics

A sine wave is traveling to the right on a cord. The lighter line in the figure represents the shape of the cord at time t = 0; the darker line represents the shape of the cord at time t = 0.10 s. (Note that the horizontal and vertical scales are different.) (a) What is the ...

### physics

A Bainbridge mass spectrometer is shown in the figure. A charged particle with mass m, charge |q|=3.2 ×10−19C and speed v=3 ×10@6 m/s enters from the bottom of the figure and traces out the trajectory shown in the fields shown. The only electric field E=11 ×103 V/m is...

### oscillations

A human wave. During sporting events within large, densely packed stadiums, spectators will send a wave (or pulse) around the stadium (Fig. below). As the wave reaches a group of spectators, they stand with a cheer and then sit. At any instant, the width w of the wave is the ...

### physics

A snapshot graph of a travelling wave is shown. The wave is travelling to the right at 32.0 m/s. a) What is the amplitude if the maximum displacement is 28.0 cm and the total distance travelled by the wave is 26.0 m? b)What is the wavelength of the wave? c)What is the ...

### Science

What is the full formula for frequencys and wavelengths? The wavelength formula is λ = v/f where λ = wavelength of a sound wave or electromagnetic wave v = the speed of propagation of the wave, f = frequency of the wave in 1/s = Hz. c=nu*lambda c is speed of light = ...

### Algebra 2

The frequency of a radio wave is inversely proportional to the wavelength. If a wave 250 m long has a frequency of about 1200 kHz, what is the approximate length of a wave with a frequency of 800 kHz? A. 167 m B. 258 m C. 325 m D. 375 m

### Physics

Two nearby nodes of a standing wave are separated by 4.5 m. If the frequency of the wave is 184 Hz, what is the speed of the wave?

### WAVE OPTICS

A traviling wave is discribed by the equation Y= exp(-az^2-bt^2-2underadical(ab zt)) 1,in what direction is the wavetravelling 2,what is the wave speed

### Physics !>:(

A wave has angular frequency 46.2rad/s and wavelength 3.57m. What is its wave number? b).What is its wave speed?

### physics

An ocean wave has a length of 12.0 m. A wave passes a fixed location every 2.0 s. What is the speed of the wave?

### science

why is the arrival time for the p-wave always earlier than the arrival of the s-wave the same seismograph station? is it because the p wave always reaches before the s- wave.