Rms value of the waves magnetic field
An electromagnetic wave strikes a 1.91-cm2 section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 9.42 × 10-4 T. How long does it take for the wave to deliver 2980 J of energy to the wall?
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The temperature of the parallel surfaces at the both ends of the rod is 34 oC. An air flow at 24 oC is crossing over the rod at 1 m/s. Determine the temperature of the rod at 0.12 m from the fixed surface.
Draw Mohr's Circle for a point on top of the cross-section of the beam where the maximum bending moment occurs. Determine the principal stresses and draw an element showing the principal planes.
If the population standard deviation is 12.3 bushels per acre, create a 90% confidence interval for the mean yield in the state this season. What is the margin of error? Create a 99% confidence interval for the mean yield per acre.
What is the electric field strength at the midpoint between the two spheres? in Newtons/Coulomb
The compression ration in an air-standard otto cycle is 8. At the begining of the compression stroke the pressure is 14.7 Lbf/in^2. Determine mean effective pressure.
A stationary particle of charge q = 2.6 × 10-8 C is placed in a laser beam (an electromagnetic wave) whose intensity is 2.4 × 103 W/m2. Determine the maximum magnitude of the (a) electric and (b) magnetic forces exerted on the charge.
The average age of the students in the sample was 23 with a standard deviation of 3.5. Determine whether or not the average age of the evening students is significantly different from 21 at the 1% significance level.
The microwave radiation left over from the Big Bang explosion of the universe has an average energy density of 3.88 × 10-14 J/m3. What is the rms value of the electric field of this radiation?
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