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1. An antenna is connected to a car battery. Will the antenna emit electromagnetic radiation? Why or why not? Explain.
2. A light-year is a measure of distance (not time). How many meters does light travel in a year?
3. How long does it take a laser beam to travel to the Moon and back? Take the Earth Moon distance to 384,000 km.
4. A beam of light is incident on a plane mirror at an angle of 35o. If the mirror rotates through a small angle through what angle will the reflected ray rotate?
5. The speed of light in polythene is 1.99 x 108 m/s. What is the index of refraction of polythene?
6. A beam of light with red and blue components of wavelengths 670 nm and 425 nm, respectively, strikes a slab of fused quartz at an incident angle of 30o. On refraction, the different components are separated by an angle of 0.001312 rad. If the index of refractions of the red light is 1.4925, what is the index of refraction of the blue light?
A magnetic field increases from 0 to 0.30T in 1.5 seconds. How many turns of wire are needed in a circular coil 15cm in diameter to produce an induced emf of 0.80 volt?
a positive charge of -4 microcoulombs is llocated at the center of a spherical shell of inner radius 2cm and outer radius 3cm, what is the total charge on he inner shell
you are eating lunch at your favorite cafe and your friend calls and says he wants to meet you. he is calling from a
Assuming you have 6.24 x 1014 electrons and the surface area of the pail is 0.2m2, What is the charge density
A typical helium-neon laser found in supermarket checkout scanners emits 633nm--wavelength light in a 1.1mm diameter beam with a power of 1.0mW. What is the amplitude of the oscillating magnetic field in the laser beam
The magnetic field component of the electromagnetic wave is 15.0 microT. What is the magnetic energy density of the wave
A 5.0-cm-diameter coil has 20 turns and a resistanceof 0.50 ohms. A magnetic field perpendicular to the coil is B =0.02t + 0.010t^2, where B is in tesla and tis in seconds. Find an expression for the induced current I(t)as a function of time.
Television sets sometimes use a rabbit ears antenna to the right. A rabbit-ears antenna consists of a pair of metal rods. The length of each rod can be adjusted to one quarter of the wavelength of an electromagnetic wave whos frequency is 125 Mhz...
What is the smallest radius of a circle at which a bicyclist can travel if his speed is 9 m/s and the coefficient of static friction between the tires and the road is 0.32, what is the largest angle of inclination
At t = 0, Q0 = 9 C and I = 0 in an LC circuit. At the first moment when the energy is shared similarly by the inductor and the capacitor, find what is the charge on the capacitance
Under such extreme conditions, protons and electrons are squeezed to form neutrons, giving birth to a neutron star. Neutron stars are massively heavy - a teaspoon of the substance of a neutron star would weigh
An object is made of glass and has the shape of a cube 0.12 m on a side, according to an observer at rest relative to it. However, an observer moving at high speed parallel to one of the object's edges and knowing that the object's mass is 2.8 kg ..
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