University Physics Volume 2
18th Edition
ISBN: 9781938168161
Author: OpenStax
Publisher: OpenStax
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Chapter 16, Problem 27CQ
Illustrate that the size of details of an object that can be detected with
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University Physics Volume 2
Ch. 16 - Check Your Understanding When the emf across a...Ch. 16 - Check Your Understanding Could a purely electric...Ch. 16 - Check Your Understanding The wave equation was...Ch. 16 - Check Your Understanding What conclusions did our...Ch. 16 - Check Your Understanding How would the speed and...Ch. 16 - Check Your Understanding How do the...Ch. 16 - Explain how the displacement current maintains the...Ch. 16 - Describe the field lines of the induced magnetic...Ch. 16 - Why is it much easier to demonstrate in a student...Ch. 16 - If the electric field of an electromagnetic wave...
Ch. 16 - In which situation shown below will the...Ch. 16 - In which situation shown below will the...Ch. 16 - Under what conditions might wires in a circuit...Ch. 16 - Shown below is the interference pattern of two...Ch. 16 - When you stand outdoors in the sunlight, y can you...Ch. 16 - How does the intensity of an electromagnetic wave...Ch. 16 - What is the physical significance of the Poynting...Ch. 16 - A 2.0-mW helium-neon laser transmits a continuous...Ch. 16 - Why is t1 radiation pressure of an electromagnetic...Ch. 16 - Why did the early Hubble Telescope photos of...Ch. 16 - (a) If the electric field and magnetic field in a...Ch. 16 - Compare the speed, wavelength, and frequency of...Ch. 16 - Accelerating electric charge emits electromagnetic...Ch. 16 - Compare and contrast the meaning of the prefix...Ch. 16 - Part of the light passing through the air is...Ch. 16 - When a bowl of soup is removed from a microwave...Ch. 16 - Certain orientations of a broadcast television...Ch. 16 - What property of light corresponds to loudness in...Ch. 16 - Is the visible region a major portion of the...Ch. 16 - Can the human body detect electromagnetic...Ch. 16 - Radio waves normally have their E and B fields in...Ch. 16 - Give an example of resonance in the reception of...Ch. 16 - Illustrate that the size of details of an object...Ch. 16 - In which pan of the electromagnetic spectrum are...Ch. 16 - In what range of electromagnetic radiation are the...Ch. 16 - If a microwave oven could be modified to merely...Ch. 16 - A leaky microwave oven in a home can sometimes...Ch. 16 - When a television news anchor in a studio speaks...Ch. 16 - Show that the magnetic field at a distance r from...Ch. 16 - Express the displacement current in a capacitor in...Ch. 16 - A potential difference V(t) = V0sin tis maintained...Ch. 16 - Suppose the parallel-plate capacitor shown below...Ch. 16 - The potential difference V(t) between parallel...Ch. 16 - A parallel-plate capacitor has a plate area of...Ch. 16 - The voltage across a parallel-plate capacitor with...Ch. 16 - The voltage across a parallel-plate capacitor with...Ch. 16 - If the Sun suddenly turned off, we would not know...Ch. 16 - What is the maximum electric field strength in an...Ch. 16 - An electromagnetic wave has a frequency of 12 MHz....Ch. 16 - If electric and magnetic field strengths vary...Ch. 16 - The electric field of an electromagnetic wave...Ch. 16 - A plane electromagnetic wave of frequency 20 GHz...Ch. 16 - The following represents an electromagnetic wave...Ch. 16 - While outdoors on a sunny day, a student holds a...Ch. 16 - A plane electromagnetic wave travels northward. At...Ch. 16 - The electric field of an electromagnetic wave is...Ch. 16 - A radio station broadcasts at a frequency of 760...Ch. 16 - The filament in a clear incandescent light bulb...Ch. 16 - At what distance does a 100-W lightbulb produce...Ch. 16 - An incandescent light bulb emits only 2.6 W of its...Ch. 16 - A 150-W lightbulb emits 5% of its energy as...Ch. 16 - A small helium-neon laser has a power output of...Ch. 16 - At the top of Earth’s atmosphere, the...Ch. 16 - The magnetic field of a plane electromagnetic wave...Ch. 16 - What is the intensity of an electromagnetic wave...Ch. 16 - Assume the helium-neon lasers commonly used in...Ch. 16 - An AM radio transmitter broadcasts 50.0 kW of...Ch. 16 - Suppose the maximum safe intensity of microwaves...Ch. 16 - A 2.50-rn-diameter university communications...Ch. 16 - Lasers can be constructed that produce an...Ch. 16 - A 1-W lightbulb emits 5% of its energy as...Ch. 16 - What pressure does light emitted uniformly in all...Ch. 16 - A microscopic spherical dust particle of radius 2m...Ch. 16 - A Styrofoam spherical ball of radius 2 mm and mass...Ch. 16 - Suppose that S avg for sunlight at a point on the...Ch. 16 - reaches the ground with an intensity of about...Ch. 16 - Suppose a spherical particle of mass m and radius...Ch. 16 - How many helium atoms, each with a radius of about...Ch. 16 - If you wish to detect details of the size of atoms...Ch. 16 - Find the frequency range of visible light, given...Ch. 16 - (a) Calculate the wavelength range for AM radio...Ch. 16 - Radio station WWVB, operated by the National...Ch. 16 - An outdoor WIFi unit for a picnic area has a...Ch. 16 - The prefix “mega” (M) and “kilo” (k), when...Ch. 16 - A computer user finds that his wireless router...Ch. 16 - (a) The ideal size (most efficient) for a...Ch. 16 - What are the wavelengths of (a) X-rays of...Ch. 16 - For red light of =660nm , what are f,, and k?Ch. 16 - A radio transmitter broadcasts plane...Ch. 16 - (a) Two microwave frequencies authorized for use...Ch. 16 - During normal beating, the heart creates a maximum...Ch. 16 - Distances in space are often quoted in units of...Ch. 16 - A certain 60.0-Hz ac power line radiates an...Ch. 16 - (a) What is the frequency of the 193-nm...Ch. 16 - In a region of space, the electric field is...Ch. 16 - A microwave oven uses electromagnetic waves of...Ch. 16 - Galileo proposed measuring the speed of light by...Ch. 16 - Show that the wave equation in one dimension...Ch. 16 - On its highest power setting, a microwave oven...Ch. 16 - A certain microwave oven projects 1.00 kW of...Ch. 16 - E1ecmagnedc radiation from a 5.00-mW laser is...Ch. 16 - A 200-turn flat coil of wire 30.0 cm in diameter...Ch. 16 - Suppose a source of electromagnetic waves radiates...Ch. 16 - A radio station broadcasts its radio waves with a...Ch. 16 - The Poynting vector describes a flow of energy...Ch. 16 - The Sun’s energy strikes Earth at an intensity of...Ch. 16 - If a Lightsail spacecraft were sent on a Mars...Ch. 16 - Lunar astronauts placed a reflector on the Moon’s...Ch. 16 - Radar is used to determine distances to various...Ch. 16 - Calculate the ratio of the highest to lowest...Ch. 16 - How does the wavelength of radio waves for an AM...Ch. 16 - A parallel-plate capacitor with plate separation d...Ch. 16 - A particle of cosmic dust has a density =2.0g/cm3...
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- Can the human body detect electromagnetic radiation that is outside the visible region of the spectrum?arrow_forwardA typical microwave oven operates at a frequency of 2.45 GHz. What is the wavelength associated with the electromagnetic waves in the oven? (a) 8.20 m (b) 12.2 cm (c) 1.20 108 m (d) 8.20 109 m (e) none of those answersarrow_forwardIs the visible region a major portion of the electromagnetic spectrum?arrow_forward
- A plane electromagnetic wave of frequency 20 GHz moves in the positive y-axis direction such that its electric field is pointed along the z-axis. The amplitude of the electric field is 10 V/m. The start of time is chosen so that at t = 0, the electric field has a value 10 V/m at the origin. (a) Write the wave function that will describe the electric field wave, (b) Find the wave function that will describe the associated magnetic field wave.arrow_forwardWhy is t1 radiation pressure of an electromagnetic wave on a perfectly reflecting surface twice as large as the pressure on a perfectly absorbing surface?arrow_forwardWhat are the wavelengths of (a) X-rays of frequency 2.01017 Hz? (b) Yellow light of frequency 5.11014Hz ? (C) Gamma rays of frequency 1.01023Hz ?arrow_forward
- Suppose a source of electromagnetic waves radiates uniformly in all directions in empty space where there are no absorption or interference effects. (a) Show that the intensity is inversely proportional to r2, distance from the source squared. (b) Show that the magnitudes of the electric and magnetic fields are inversely proportional to r.arrow_forwardAn incandescent light bulb emits only 2.6 W of its power as visible light. What is the rms electric field of the emitted light at a distance of 3.0 m from the bulb?arrow_forwardLunar astronauts placed a reflector on the Moon’s surface, off which a laser beam is periodically reflected. The distance to the Moon is calculated from the round-trip time. (a) To what accuracy in meters can the distance to the Moon be determined, If this time can be measured to 0.100 ns? (b) What percent accuracy is this, given the average distance to the Moon is 384,480 kin?arrow_forward
- What is the maximum electric field strength in an electromagnetic wave that has a maximum magnetic field strength of 5.00104 (about 10 times Earth's magnetic field)?arrow_forwardA small helium-neon laser has a power output of 2.5 mW What is the electromagnetic energy in a 1.0-m length of the beam?arrow_forwardThe Poynting vector describes a flow of energy whenever electric and magnetic fields are present. Consider a long cylindrical wire of radius r with a current I in the wire, with resistance R and voltage V. From the expressions for the electric field along the wire and the magnetic field around the wire, obtain the magnitude and direction of the Poynting vector at the surface. Show that it accounts for an energy flow into the wire from the fields around it that accounts for the Ohmic heating of the wire.arrow_forward
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