Related questions with answers

Cherenkov radiation is electromagnetic radiation emitted when a fast-moving particle such as a proton passes through an insulator at a speed faster than the speed of light in that insulator. The Cherenkov radiation looks like a blue glow in the shape of a cone behind the particle. The radiation is named after Soviet physicist Pavel Cherenkov, who received a Nobel Prize in 1958 for describing the radiation. Estimate the smallest speed of a proton moving in oil that will produce Cherenkov radiation behind it.

(Unpacking Characters from an Integer) Using the right-shift operator, the bitwise AND operator and a mask, write function unpack Characters that takes the unsigned integer from earlier example and unpacks it into two characters. To unpack two characters from an unsigned integer, combine the unsigned integer with the mask 65280 (00000000 00000000 11111111 00000000) and right shift the result 8 bits. Assign the resulting value to a char variable. Then combine the unsigned integer with the mask 255 (00000000 00000000 00000000 11111111). Assign the result to another char variable. The program should print the unsigned integer in bits before it is unpacked, then print the characters in bits to confirm that they were unpacked correctly.

A $400-\Omega$ resistor, an inductor, and a capacitor are in series with an AC source. The reactance of the inductor is $700 \Omega$ , and the circuit impedance is $760 \Omega$ . (a) What are the possible values of the reactance of the capacitor? (b) If you find that the power delivered to the circuit decreases as you raise the frequency, what is the capacitive reactance in the original circuit? (c) Repeat part (a) assuming the resistance is $200 \Omega$ instead of $400 \Omega$ and the circuit impedance continues to be $760 \Omega$ .