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A material is found to have a tenth-thickness of 2.3 cm for 1.25-MeV gamma rays. (a) What is the linear attenuation coefficient for this material (b) What is the half-thickness (c) What is the mean-fr
a) Draw the phasor diagram for V1, V2 and V3. b) Find out the value of V1+V2-V3 and draw the phasor diagram for it. c) If the frequency of all signals is 60Hz, then what is the angular position V1 a
Let the random process X(t) be defined as X(t) = A + Bt, where A and B are independent random variables each uniformly distributed in [-1, 1]. a) Find the mean of X(t). b) Find Rx(t1, t2) c) Is X(t)
The sampling frequency in a DSP system is fs=8 kHz. Anti-aliasing filter used in the system is the second-order Butterworth filter with cutoff frequency of fc=3.4 kHz. What is the percentage of alia
A 11 GHz uniform plane wave with maximum electric field of 100 V/m propagates in air in the direction of a x-direction. The magnetic field has only a a(z) component ( in the z direction), which is a
a) Write the real-time expressions in the z=0 plane. What kind of polarization exists here Is is clockwise or counterclockwise (looking along +z) b) Find the expression for the accompanying H(z) fie
However, nothing is available with which to measure the length of the rope. Therefore, at the bottom of the rope a small object is attached so as to form a simple pendulum that just clears the floor
A 2.19 x 10-2-kg block is resting on a horizontal frictionless surface and is attached to a horizontal spring whose spring constant is 120 N/m. The block is shoved parallel to the spring axis and is
A rifle fires a 1.20 x 10-2-kg pellet straight upward, because the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed
A 0.51-kg block is hung from and stretches a spring that is attached to the ceiling. A second block is attached to the first one, and the amount that the spring stretches from its unstretched length
The other end is connected to a box. The box is pulled to the right, stretching the spring. Static friction exists between the box and the table, so when the spring is stretched only by a small amou
A certain cyclotron that has a magnetic field whose magnitude is 1.8 T is designed to accelerate protons to a kinetic energy of 25 Mev. (a) What is the cyclotron frequency for this cyclotron (b) Wha
The end of the plates is 30 cm from the tube screen. The kinetic energy of the electrons is 2.80 keV. If a potential difference of 25.0 V is applied across the deflection plates, by how much will th
Three single-phase transformers are connected in a wye/delta configuration. Each single-phase transformer has an identical number of turns in the primary and secondary windings. If a line-to-line vo
a. Describe in your words why I_G is effectively 0A for a JFET transistor b. Why is the input impedance to a JFET so high c. Why is the terminology field effect appropriate for this important three-
Provide the state diagram b) Generate the truth table showing the previous state and input combinations, and next state and outputs. c) Encode the states and give the next state equations for the Q'
Given the following circuit, in which R1 = 200 (Ohm), R2 = 100(Ohm), V1 = 6 V, and V2 = 3 V. Assume the diode turn-on voltage is 0.7 V. Find the current through the circuit. Find the voltage V1 for
a) Calculate the wind force on the turbine for a 5 mph wind. b) What is the force if the wind speed is tripled? c) Calculate the torque on the tower for the cases of the 5 and 15 mph wind velocities
Consider a BPSK signal where each bit is represented by a triangular pulse with width T and height A. What is the "energy per bit" for this BPSK pulse with A=7V and T=0.008s
A 10-V source is connected across a 10-?F capacitor. In 0.5 seconds after the source is removed, the capacitor voltage has decayed to 1.35 Volts. Derive and label a circuit model for this capacitor.
use series to approximate values of functions. Therefore it is important that we know for which values of x the series will provide good approximations of the given function. Based on the graph can
A ball is dropped from a height of 10 feet. Each time it strikes the ground, it bounces up to 80% of the previous height a.What height will the ball bounce to after it strikes the ground for the third
Design a UV flip-flop using a JK flip-flop and two logic gates. where the characteristic table for the UV flip flop is U V Q(t+1) 0 0 1 0 1 !Q(t) 1 0 Q(t) 1 1 Q(t)
Find the range of values of "k" for which the system has two real, distinct, and stable poles. c) Find the value of k such that the system has a percent overshoot between 5% and 10%. d) Find the sys
A) How far is the spring stretched at the equilibrium postion B) How much potential energy is stored in the spring C) the mass is pulled down a distance of 4.50 cm and released. How fast is the mass