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An initially uncharged 10-mF capacitor is charged by a 10-V battery through a resistance R. The capacitor reaches a potential difference of 4 V.
Suppose that the capacitor is disconnected from the circuit at some time t0 >> 0. Ideally, what would be the voltage across the capacitor from then on?
Estimate the crosstalk voltage at the load of circuit B when the signal source of circuit A is V1 = 100 mV at 1 GHz.
Examine the causes of the most significant type of defect, using a cause-and-effect diagram.
Assume that two parallel plates with a surface area of 50,000 mm^2 are separated by 0.1 mm.
In radio frequency (RF) circuits used for portable applications, power efficiency is extremely important. For this reason, Class C power amplifiers.
What are some ways the distortion can be minimized and discuss the trade offs that exist when implementing these distortion minimizing methods?
What is the charge that accumulates on the left plate of the first capacitor, after a long time when the switch is closed?
Calculate the value of the current through the 12 V battery shown in FIGURE.Calculate the power dissipated in R1, R2 and R.
A battalion of soldiers aims their cannon at an angle of 30° up from horizontal and fires it as shown below in a large, level field.
Artillery shell is fired with an initial speed of 1.80x10^3 m/s at a angle of 54.3 degrees above the horizontal and returns to its original level before impact.
Six model rockets (ABCDEF) have just had their engines turned off. All of the rockets are aimed at the same angle, but their speeds differ.
If a bicyclist of mass 69.0 (including the bicycle) can coast down a 6.90 degree hill at a steady speed of 5.60 km/hr because of air resistance.
In a heart pacemaker, a pulse is delivered to the heart 81 times per minute. The capacitor that controls this pulsing rate discharges through a resistance.
Kate, a bungee jumper, wants to jump off the edge of a bridge that spans a river below. Kate has a mass m, and the surface of the bridge is a height.
A sled is being held at rest on a slope that makes an angle theta with the horizontal. After the sled is released, it slides a distance d1 down the slope.
A 10.6 kg object oscillates at the end of a vertical spring that has a spring constant of 2.05 * 10^4 N/m.
Assume there is no air resistance and that the acceleration due to gravity is g = 9.81 m/s^2. ??What is the maximum height the projectile will reach?
A golf ball (m = 46.0 g) is struck with a force that makes an angle of 45.7° with the horizontal. The ball lands 207 m away on a flat fairway.
The distance from the roof to the ground (flat) is 12m. If the speed of the tile is 8m s(-1) when it leaves the roof find:
Even the best athletes spend little more than 1.00 s in the air (their "hang time"). Treat the athlete as a particle and let ymax .
An electrophysiological recording table is subject to floor vibrations. Often each leg of such a table is placed on a “damper” consisting of a dashpot .
F = kvx , which k is a positive constant. The particle passes through the origin with speed vo at time t=0. Find x as a function of t.
Determine, in terms of h, two possible values of tan alpha. Explain which of these two values is the more appropriate one.
Show that if there is a retarding force proportional to the square of the instantaneous speed.