oven can cook food unevenly, with hot spots in the food at antinodes and cool spots at nodes, so a turntable is often used
Q: An new oven cooks a small cake with visible light. If a pan of food (area = 0.036 m2) is 0.475 m…
A:
Q: What is the wavelength of the electromagnetic wave emitted by the oscillator-antenna system of the…
A: inductance(L)=0.370μH=0.370×10-6Hcapacitance(C)=30.pF=30.2×10-12 F We have to find wavelength of…
Q: An electromagnetic wave strikes a 1.61-cm2 section of wall perpendicularly. The rms value of the…
A:
Q: A minivan moving at 150 m/s passes an unmarked state police car moving at 80 m/s. The…
A:
Q: A normal human heart, beating about once per second, creates a maximum 4.00 mV potential across…
A: Given- Potential produced (P) = 4 mV = 4 x 10-3 V Length of chest (d) = 0.400 m Frequency of wave…
Q: On its highest power setting, a certain microwave oven projects 1 kW of microwaves onto a 32 cm by…
A: Step 1:Step 2:
Q: The microwaves enter the oven and are reflected by the walls. The standing-wave pattern produced in…
A:
Q: At what distance from a 8.0 W point source of electromagnetic waves is the magnetic field amplitude…
A: Given: The power of the source is 8 W. The amplitude of the magnetic field is 0.70 μT.
Q: On a cloudless day surface of the eart 1.4 x 10³ W/m². W
A: GivenIntensity of sunlight reaches the earth, I=1.4×103 W/m2Volume, V=5 m3
Q: a cloudless day, the sunlight that reaches the surface of the earth has an intensity of about 1.3 ×…
A:
Q: Lasers can be constructed that produce an extremely high intensity electromagnetic wave for a brief…
A: Given Data:The electric field strength is, E0=1.11×1011 V/mThe time required for the propagation is,…
Q: You and your friend Bruce are experimenting with a red lamp shade and blue lamp shade. You place…
A: Given, Power of light bulb is 120 W and light radiates from the lamp uniformaly of 7.3 % of their…
Q: A diathermy machine, used in physiotherapy, generates electromagnetic radiation that gives the…
A:
Q: Police radar guns measure the speed of moving vehicles by transmitting electromagnetic waves at a…
A: Given:Police radar transmits at a frequency (ftransmited) =22.4 GHz or 22.4×109 HzCar moving toward…
Q: S X 5. A high energy pulsed laser emits 3.00 nano second-long pulse of average power 1.60 x 10¹1 W.…
A:
Q: 15.0 MHz magnetic field travels in a fluid in which the propagation velocity is 1.0x108 m/sec. The…
A: Given Frequency, f=15.0MHz Velocity, v=1.0×108 m/sec Initial Value, H0,0=2.0 ax A/m Amplitude drop,…
Q: A small spaceship cruises the solar system using an ideal, square-absorbing solar sail with side…
A: Given:The side length of solar sail L =1000mThe intensity of radiation near the earth I = 1300…
Q: A normal human heart, beating about once per second, creates a maximum 4.00 mV potential across…
A:
Q: Microwave ovens can have cold spots and hot spots due to standing electromagnetic waves, analogous…
A:
Q: An industrial laser is used to burn a hole through a piece of metal. The average intensity of the…
A: Given data: Intensity (I) = 1.4 × 109 W/m2 Required: The RMS value of electric field
Q: A normal human heart, beating about once per second, creates a maximum 4.00 mV potential across…
A:
Q: VHF, or very high frequency, refers to radio frequency electromagnetic waves in the range 30 to 300…
A: I hope this helps you! Thank you! Explanation:Step 1: Step 2: Step 3: Step 4:
Q: A space probe which is a distance of 2.6×1010 mm from a star measures the total intensity of…
A: Distance=2.6×10^10mm Intensity=5300W/m²
Q: Police use radar guns and the Doppler effect to catch speeders. The figure below illustrates a…
A: Speed of police car, VP=0 m/sSpeed of car, VC=31.0 m/sEmitted frequency, f0=8.0×1010 HzWe know at…
Q: Three electromagnetic waves travel through a point P along the x axis. They are polarized parallel…
A: E1=(10μV/m)sin[(2.0×1014rad/s)t]E2=(5.0μV/m)sin[(2.0×1014rad/s)t+45∘]E3=(5.0μV/m)sin[(2.0×1014rad…
Q: What is the wavelength of the radio waves from a station broadcasting at 66 MHz? The speed of light…
A: Frequency, f = 66 MHz = 66×106 HzSpeed of light, c = 3×108 m/sWavelength, λ = ?
Q: A certain electromagnetic field traveling in vacuum has a maximum electric field of 3.9x102 V/m.…
A: Given data : Electric field, E = 3.9×102 V/m Formula : For an electromagnetic wave traveling…
Q: Lasers can be constructed that produce an extremely high intensity electromagnetic wave for a brief…
A: Please see the attached image for the solution. If there are queries or if the image is not…
Q: Satellite TV is broadcast from satellites that orbit the earth. Their antennas broadcast a 15 kW…
A: So to solve this question we first need to find the intensity (I) , which can be derived by…
Q: An electromagnetic wave is normally incident on a flat surface. Assuming the power per unit area…
A:
A microwave oven is powered by an electron tube called a magnetron that generates
The microwaves enter the oven and are reflected by the walls.
The standing wave pattern produced in the oven can cook food unevenly, with hot spots in the food at antinodes and cool spots at nodes, so a turntable is often used to rotate the food and distribute the energy.
If a microwave oven is used with a cooking dish in a fixed position, the antinodes can appear as burn marks on foods such as egg whites or carrot strips or cheese.
The separation distance between the burns is measured to be 6.20 cm.
Calculate the speed of the microwaves from these data.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- consider a bright star in our sky. assume its distance from earth is 38.3 light-year (ly) and its power output is 4.00 * 10^28 W. about 100 times that of the sun. one light-year is the distance traveled by light through a vacuum in one year. a. find the intensity of the starlight at the earth. b. find the power of the starlight at the earth intercepts ( the radius of earth is 6.38 * 10^6 m .)The intensity of solar radiation that falls on a detector on Earth is 1.00 kW/m². The detector is a square that measures 6.11 m on a side and the normal to its surface makes an angle of 30.0° with respect to the Sun's radiation. How long will it take for the detector to measure 436 kJ of energy? S16. Review. Model the electromagnetic wave in a microwave oven as a plane traveling wave moving to the left, with an intensity of 25.0 kW/m². An oven contains two cubical con. tainers of small mass, each full of water. One has an edge length of 6.00 cm, and the other, 12.0 cm. Energy falls perpendicularly on one face of each container. The water in the smaller container absorbs 70.0% of the energy that falls on it. The water in the larger container absorbs 91.0%. That is, the fraction 0.300 of the incoming microwave energy passes through a 6.00-cm thickness of water, and the fraction (0.300)(0.300) = 0.090 passes through a 12.0-cm thickness. Assume a negligible amount of energy leaves either container by heat. Find the temperature change of the water in each container over a time interval of 480 s. %3D
- The company where you work has obtained and stored five lasers in a supply room. You have been asked to determine the intensity of the electromagnetic radiation produced by each laser. The lasers are marked with specifications, but unfortunately different information is given for each laser: Laser A: power = 2.6 W; diameter of cylindrical beam = 2.6 mm Laser B: amplitude of electric field = 480 V/m Laser C: amplitude of magnetic field = 8.7 x 10-6 T Laser D: diameter of cylindrical beam = 1.8 mm; force on totally reflecting surface = 6.0 x 10-8 N Laser E: average energy density in beam = 3.0 x 10-7 J/m3 Calculate the intensity for each laser, and rank the lasers in order of increasing intensity. Assume that the laser beams have uniform intensity distributions over their cross sections.An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is S= 2.17 × 109 W/m2. What is the rms value of (a) the electric field and (b) the magnetic field in the electromagnetic wave emitted by the laser?High-power lasers in factories are used to cut through cloth and metal (see figure below). One such laser has a beam diameter of 2.00 mm and generates an electric field having an amplitude of 0.600 MV/m at the target. Philippe Plailly/SPL/Photo Researchers, Inc. (a) Find the amplitude of the magnetic field produced. mT (b) Find the intensity of the laser. MW/m² (c) Find the power delivered by the laser. W
- Which one of the following statements is true of an electromagnetic (EM) wave? OEM waves carry electrical charge. EM waves consist of transverse oscillating electric and magnetic fields. OEM waves do not carry energy. EM waves travel at different speeds in a vacuum, depending on their frequency.A plane electromagnetic wave is traveling in a vacuum. The magnetic field is directed along the z-axis and given by: B, = 3.0µT sin ((1.0 × 107 )x - (3.0 × 1015 )t ) a) Determine the wavelength , of the wave. b) What is the frequency, f, of the wave in Hertz? c) Determine the maximum strength of the B-field. d) Determine the maximum strength of the E-field and it direction. e) Can you find a time and place when the B-field is zero? f) What is the strength of the E-field when the B-filed is zero?A source of electromagnetic waves radiates with power P uniformly in all directions. At some distance d from the source, the magnetic field amplitude of the waves is B0. What will the amplitude of the magnetic field be a distance d/4 away from the source, in terms of B0, P, d, e0, µ0, and/or c? Justify your answer. (see image)