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A source of electromagnetic waves radiates power uniformly in all directions at a single frequency. At a distance of 6.50 km from the source, a detector measures the intensity of the wave to be 32.0 µW/m2.
a) What is the peak value of the magnetic field at the detector due to the wave?
b) What is the average power radiated by the source?
c) Now the detector is replaced with a perfectly absorbing sheet normal to the incident flux, with surface area 2.00 m2. What is the force on the sheet due to the wave?
Two parallel plates, each of area 8.17 cm2, are separated by 6.20 mm, Calculate the amount of the electric charge stored on each plate
zorch, an arch enemy of superman, decides to slow earth's rotation to once per 27.0 h by exerting an opposing force at, How long must zorch push with this force to achieve his goal
A positive charge +q1 is located to the left of a negative charge ?q2. On a line passing through the two charges, What is the distance between the charges
Capacitors C1 = 6.03 uF and C2 = 2.45 uF are charged as a parallel combination across a 298 V battery, Calculate the resulting charge on capacitor C2
suppose a photon of wavelength 0.1A is absorbed by an n=1 electron in potassium(Z=19) and the electron is removed from the atom. find the velocity of the electron
The blood flow rate through the aorta is typically 95 cm3/s, and a typical adult has about 5.1 liters of blood. what is the speed of blood as it flows through the aorta
What is the unknown charge at x = +0.19 m in micro-coulombs? If negative, indicate so with a negative sign, but omit a sign if positive.
A charged particle moves through a velocity selector at a constant speed in a straight line. The electric field of the velocity selector is 4290 N/C, Find the charge-to-mass ratio of the particle
Water is moving with a speed of 4.7 m/s through a pipe with a cross-sectional area of 4.3 cm2. The water gradually descends 7 m as the pipe increases in area to 8.2 cm2.
A hardworking ant must supply 0.00655 N to pull a small piece of fruit at constant velocity over a distance of 8.00 cm up a small hill to the entrance of the colony. Use the work-energy theorem to calculate the mass of the piece of fruit in grams
A thin film with index of refraction n = 1.29 is placed in one arm of a Michelson interferometer, perpendicular to the optical path. If this causes a shift of 8.0 bright fringes of the pattern produced by light of wavelength 693nm, what is the film t..
A 81.0-kg daredevil exhibitionist hangs on to the end of a long bungee cord attached to the railing of the Brooklyn Bridge and oscillates vertically, What is the frequency of oscillation
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