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A tungsten filament incandescent light bulb emits spherical electromagnetic waves of 50 Watts isotropically.
a) What is the Intensity
b) What is the radiation pressure
c) What are the electric and magnetic fields at 3m distance from the bulb.
Also, if the temperature of the filament is 20000C, what is the maximum wavelength of radiation emitted by the filament?
(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 11.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) Imagine adding electrons to the pin until the negative charge ha..
You are given three capacitors, with capacitances 0.0077 µF, 12000 pF, and 0.027 µF. Choosing from these three capacitors, How would you connect them in each case
A shop sign weighing 245-N is supported by a uniform 155-N bean. Find out the tension in the guy wire, and the horizontal and vertical forces exerted by the hinge on the bean.
A laser beam of power 4.40 W and diameter 2.70 mm is directed upward at one circular face of a perfectly reflecting cylinder, which is made to "hover" by the beam's radiation pressure
If the skier is moving at 13 m/s at the bottom of the trail, calculate the total work done by friction and air resistance during the run
The radar system at an airport broadcasts 15 GHz with 150 kW. An approaching airplane with a 34 m^2 cross section is 24km away. Assume that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly in all di..
How to find the position and height of an image
A particle is trapped in an infinite one-dimensional well of width L = 129 nm. If the particle is in its ground state, evaluate the probability to find the particle. (a) between x = 0 and x = 0.042L (b) between x = 0.042L and x = 0.958L (c) betwee..
The bucket is released from rest at the top of a well and falls a distance 10.3 to the water. You can ignore the weight of the rope.
What is the net entropy change
A person driving her car at 57km/h approaches an intersection just as the traffic light turns yellow. She knows that yellow light lasts only 2.0 s before turning to red, and she is 30m away from the near side of the intersection.
A flight attendant pulls her 63N flight bag a distance of 312m along a level airport floor at a constant velocity. The force she exerts is 39N at the angle of 59° above the horizontal.
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