공대생의 공부공간

문제)Plane-polarized light is incident on a single polarizing disk with the direction of E parallel to the direction of the transmission axis. Through what angle should the disk be rotated so that the intensity in the transmit ted beam is reduced by a factor of (a) 3.00.(b) 5.00.(c) 10.0. 풀이) (a) I reduced into 1 / 3.00 × I_max,I / I_max = 1 / 3.00 = cos^2 θ. cos θ = √(1 / 3.00).  θ = arccos √(1 /..

문제) A possible means of space flight is to place a perfectly reflecting aluminized sheet into orbit around the Earth and then use the light from the Sun to push this “solar sail.” Suppose a sail of area A = 6.00 × 10^5 m^2 and mass m = 6.00 × 10^3 kg. Ignore all gravitational effects and assume a solar intensity of 1370 W / m^2 (a) Calculate the force is exerted on the sail.(b) Calculate the sai..

Electromagnetic sinusoidal wave propagating in the x direction. Suppose the wave length is 50.0 m and the electric field vibrates in the xy plane with an amplitude of 22.0 V/m. (a) Calculate the frequency of the wave.(b) the magnetic field B when the electric field has its maximum value in the negative y direction.(c) Write an expression for B with the correct unit vector, with numerical values ..

문제) The switch is connected to position a for a long time interval. At t = 0, the switch is thrown to position b. After this time,(a) Calculate the frequency of oscillation of the LC circuit.(b) Calculate the maximum charge that appears on the capacitor (c) Calculate the maximum current in the inductor(d) the total energy the circuit possesses at t = 3.00 s 풀이)(a) the frequency of oscillation of..