(a) What is the wavelength (in cm) of these electromagnetic waves? cm (b) What is the total energy (in μ3) contained in each pulse? P (c) Compute the average energy density (in m3/m³) inside each pulse.
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- If the electric field of an electromagnetic wave is oscillating along the z-axis and the magnetic field is oscillating along the x-axis, in what possible direction is the wave traveling?The electric part of an electromagnetic wave is given by E(x, t) = 0.75 sin (0.30x t) V/m in SI units. a. What are the amplitudes Emax and Bmax? b. What are the angular wave number and the wavelength? c. What is the propagation velocity? d. What are the angular frequency, frequency, and period?What is the intensity of an electromagnetic wave with a peak electric field strength of 125 Vim?
- A parabolic reflector focuses electromagnetic waves into a beam as shown in the figure. The electromagnetic radiation is pulsed, with a pulse frequency of 19.0 GHz, and the duration of each pulse is t = 1.00 ns. The face of the reflector has a radius of 3.00 cm, and the average power during each pulse is 29.0 kW. (Due to the nature of this problem, do not use rounded intermediate values in your calculations—including answers submitted in WebAssign.) (a) What is the wavelength (in cm) of these electromagnetic waves? (b) What is the total energy (in µJ) contained in each pulse? (c)Compute the average energy density (in mJ/m3) inside each pulse. (d)Determine the amplitude of the electric field (in kV/m) and magnetic field (in µT) in these electromagnetic waves. (e) Assuming that this pulsed beam strikes an absorbing surface, compute the force (in µN) exerted on the surface during the 1.00 ns duration of each pulse.A parabolic reflector focuses electromagnetic waves into a beam as shown in the figure. The electromagnetic radiation is pulsed, with a pulse frequency of 19.0 GHz, and the duration of each pulse is t = 1.00 ns. The face of the reflector has a radius of 3.00 cm, and the average power during each pulse is 29.0 kW. (Due to the nature of this problem, do not use rounded intermediate values in your calculations—including answers submitted in WebAssign.) (d) Determine the amplitude of the electric field (in kV/m) and magnetic field (in µT) in these electromagnetic waves. Emax= kV/m Bmax = µT (e) Assuming that this pulsed beam strikes an absorbing surface, compute the force (in µN) exerted on the surface during the 1.00 ns duration of each pulse. µNIn the figure, a laser beam of power 4.50 W and diameter 2.60 mm is directed upward at one circular face (of diameter d < 2.60 mm) of a perfectly reflecting cylinder. The cylinder is levitated because the upward radiation force matches the downward gravitational force. If the cylinder's density is 1.70 g/cm³, what is its height H? Number i Units
- A high-energy pulsed laser emits a 1.1-ns-long pulse of average power 1.5×1011 W. The beam is nearly a cylinder 2.3x10-3 m in radius and it travels in free space. ▼ Determine the energy delivered in each pulse. Express your answer to two significant figures and include the appropriate units. AU = Submit Part B Erms = Submit Value Provide Feedback μA Determine the rms value of the electric field. Express your answer to two significant figures and include the appropriate units. Request Answer O ■ μA Value Units Request Answer ? Units ?A microwave source produces pulses of 21.0 GHz radiation, with each pulse lasting 1.00 ns. A parabolic reflector with a face area of radius R = 8.50 cm is used to focus the microwaves into a parallel beam of radiation, as shown in the figure below. The average power during each pulse is 25.0 kW. (a) What is the wavelength of these microwaves? cm (b) What is the total energy contained in each pulse? μJ (c) Compute the average energy density inside each pulse. mJ/m³ 3 (d) Determine the amplitude of the electric field and magnetic field in these microwaves. Emax kv/m μT B. max (e) Compute the force exerted on the surface during the 1.00 ns duration of each pulse. Assume this pulsed beam strikes an absorbing surface. UNYou are performing research on the development of optomechanical systems. In one of your experiments, a uniform circular disk of mass m = 25.6 g and radius r = 39.0 cm hangs vertically from a fixed, frictionless, horizontal hinge at a point on its circumference as shown below. You aim a beam of electromagnetic radiation with intensity 9.5 MW/m2 so that it is incident on the disk in a direction perpendicular to its surface. The intensity of the radiation is uniform over the entire face of the disk. The disk is perfectly absorbing, and the resulting radiation pressure makes the disk rotate about the hinge, as shown below. In order for the rotation of the disk to activate a switch in a circuit, the disk must rotate through 3.00°. Determine the angle (in degrees) through which the disk rotates.
- A (2.78x10^0)-μF capacitor is connected to an EMF that is increasing uniformly with time at a rate of (1.965x10^2) V/s. What is the displacement current between the plates? Express the result in mA with three significant figures.The image attached is a neat copy of a photo of an electricity meter for a domestic solar array. The display shows the energy we sold to the electricity company on a winter's day. Each box is 100 W high and 1 hr wide. At the radius of the earth's orbit, the intensity of sunlight is I=1.4 kW.m–2 . (This means that 1.4 kW.m–2 passes through 1 square metre at right angles to the sun's rays.) The solar array in the previous question consists of 10 panels, each with area A=1.6 m2 . Under optimal conditions - with the sun at right angles to the array and no clouds in the sky - the array produces Pout=2.3 kW . What is the efficiency of the array? Power out/power in = _____ %.I am having trouble understanding this question and the calculations that follow. A radio station broadcasts at a frequency of 760 kHz. At a receiver some distance from the antenna, the maximum magnetic field of the electromagnetic wave detected is 2.15 × 10^-11 T . (a) What is the maximum electric field? (b) What is the wavelength of the electromagnetic wave? (c) What are the wavelengths of X-rays of frequency 2.0×10^17 Hz? (d) Yellow light of frequency, 5.1×10^14 Hz ? (e ) Gamma rays of frequency 1.0 × 10^23 Hz? Any help would be greatly appreciated! :)