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A heart defibrillator delivering 400 J of energy by discharging a capacitor initially at 10,000 V has a capacitance of 8.00 µF (see Example 18.11 of the textbook). The energy stored in the capacitor of a second defibrillator is only 304 J but the charge in both defibrillators is the same. What is the voltage of the second defibrillator?
A 0.464-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backwards. Find the momentum of the electron
A proposed space station includes living quarters in a circular ring 60.5 m in diameter. At what angular speed should the ring rotate
A particle of charge +12 uC and mass 3.8 x 10^-5 kg is released from rest in a region where there is a constant electric field of +480 N/C
A chunk of metal is held stationary, suspended by a string and the tension in the string is 19.6 N. What is the mass of the chunk of metal
The image is located 3.5 cm from the mirror. (a) If the image is 4X larger than the object. Calculate the distance between the object and the mirror. (b) Calculate the focal length of the mirror.
You are driving a car that weighs 1500 kg at 50 km/h, How much force would you need to apply on the wheels of your car through the breaks in order to be able to stop short of hitting the cat
Assume the speakers are reconnected so that the 440 Hz sounds they emit are accurately out of phase. At what positions (how far should the microphone be moved to the right) are the intensity maximum and minimum now.
A 1410-kg racecar is driving around a circular track of radius 161 m. What is the magnitude of the net force acting on the vehicle at this time and the force's direction relative to the velocity
A vertical wall (6.3 m x 3.3 m) in a house faces due east. A uniform electric field has a magnitude of 150 N/C. What is the electric flux through the wall
A television is tuned to a station broadcasting at a frequency of 8.50 107 Hz. Find the optimum length of the antenna
The lenses used in a compound microscope have powers of + 90 D and + 60 D . If a total magnification of -250 x is desired, what should be the distance between the two lenses
A ray of light traveling in air enters benzene contained in a rectangular tank whose walls are made of ice. The bottom of the tank is a mirror. What angle does the ray make with the horizontal (normal) when it reaches the side of the tank
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