fatih

if the beam current in a particular TV is 50 micro A and the charge on a single electron is 1.6x10^-19 C. how many electrons hit the face of the picture tube in one second?

13 years ago

a 100 V DC signal is applied to four resistors as shown in Fig. 5. The values of the resistors are 20 ohm, 40 ohm, 60 ohm and 80 ohm. What is the voltage across the 40 ohm resistor?

13 years ago

two unknown resistors a and b are connected together. when they are connected in series their combined resistance is 15 ohm. When they are connected in parallel, their combined resistance is 3.3 ohm. What are the resistances of A and B?

13 years ago

Find an example of 2 by2 matrices with a12 = .5 for which: a. A^2 = I b. A^-1 = A^T c. A^2 = A By the way, a12 means the first row and second column.

13 years ago

true or false a small plastic ball has an excess negative charge on it. if a magnet is placed close to this ball, it will either attract or repel the ball, depending upon which pole is closer to the ball.

13 years ago

captain iplanet measures the magnetic forces on a proton which is vertically falling at 1996 m/s at the equator (take the earth's field to be .4 Gauss horizontal and pointing northward). what force would she measure? Give both force and direction.

13 years ago

for circuits with either an inductor or capacitor, the current gets out of phase with the voltage. for these circuits how are the frequencies of the current and voltage related?

13 years ago

often it is highly desirable to minimize the impedance in a circuit. if the circuit contains a resistor, a capacitor, and an inductor, where the resistor and capacitor must be R and C respectively, and the inductor may have any value, what is the minimum...

13 years ago

for an RLC ciruit, how are phase sifts other than plus or minus pi/2 possible?

13 years ago

An ion enters a mass spectrometer which has a .18 T field perpendicular to? an electric field of 1.6 kV/m and selects a velocity. the same magnetic field is then used to deflect the singly charged ion into a circular path of radius 12.5 cm. a. what veloci...

13 years ago

a magnetic field goes from the top to the bottom of this page. what direction will a proton moving diagonally from the upper left to the lower right deflect? Assuming paper lies flat. a.downward b.upward c.left d.right

13 years ago

a positive charge is moving to the right and experiences a vertical upward magnetic force. In which direction is the magnetic field? to the right to the left out of the page into the page upward

13 years ago

at 3.68100017 kHz the reactance in a circuit of a 9 uF capacitor and an inductor are equal in magnitude. what is the value of the inductor? a. .000020 H b. .000020 mH c. .000021 uH d. .000021 mH

13 years ago

an RlC circuit has a resistance of 4 kOhm, a capacitance of 33 uF, and an inductance of 23 H. if the frequency of the alternating current is 2/pi kHz, what is the phase shift between the current and the voltage.

13 years ago

An RLC circuit has voltage supplied to it at a frequency of 13.0 kHz with a phase difference between the current and the voltage of magnitude 0.20 rad. If the circuit has a capacitance of 5.0 µF and an inductance of 0.050 H, find the resistance of the cir...

13 years ago

for an RLC circuit with a resistance of 11 k*ohm, a capacitance of 2 uF, and an inductance of 24 H, what frequency is needed to minimize the impedance?

13 years ago

a series RLC circuit has a peak current of 1 A with a frequency of 54 kHz. if the resistance of the circuit is 51 kHz, the capacitance of the circuit is 19 uF and the inductance of the circuit is 25 uF, determine the average power of the circuit.

13 years ago

Verify the given linear approximation at a = 0.Then determine the values of x for which the linear approximation is accurate to within 0.1. (Enter your answer using interval notation. Round your answers to three decimal places.) ln(1 + x) ¡Ö x

13 years ago

Use a linear approximation (or differentials) to estimate the given number. radical (99.4)

13 years ago

Find the steady state for the Markov matrix? A=[ .2 .4 .3 .4 .2 .3 .4 .4 .4] Then calculate the limit of A^n = (0,20,0) as n->infinity

13 years ago

You drop a stone down a well. You hear the splash 2.23 s later. How deep is the well? speed of sound 343 m/s

13 years ago