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Part 1: (RC circuit) 5 identical resistors with resistance R are connected in series, while 5 identical capacitors with capacitance C are connected in parallel. The internal resistance of the battery is negligible. What is the time constant of this RC circuit (in term of RC)?
Part 2: (Charging a capacitor) An uncharged 10-microF capacitor and a 100 kOhm resistor are connected in series, and 100 V is applied across the combination. How long (in unit of seconds) does it take for the capacitor voltage to reach 80V?
A 8.0 W laser beam shines on an ensemble of 10^24 electrons, each in the ground state of a one-dimensional infinite square well 0.80nm wide. How many electrons can be so excited if the beam shines for 15 ms
There is a maximum depth at which a diver can breathe through asnorkel tube because as the depth increase, What is the external-internal pressure differnece when the diver's lungsare at a depth of 6.1m
The intake to a hydraulic turbine installed in a flood control dam is located at an elevation of 10 m above the turbine exit. what is the mass flow rate fo water, in kg/s
A 13.0-g wad of sticky clay is hurled horizontally at a 110-g wooden block initially at rest on a horizontal surface. The clay sticks to the block.what was the speed of the clay immediately before impact
A tungsten target is struck by electrons that have been accelerated from rest through a 29.1-kV potential difference. Find the shortest wavelength of the radiation emitted
A Speaker (which is to be treated as the source point) emits sound at a frequency of 4x10^3 Hz and a power of 28 Watts. What is the power intercepted by your ear
You find an unlabeled box of fine needles, and want to determine how thick they are. A standard ruler won't do the job, What is the diameter of the needle
A spaceship leaves earth (Event A), travels to pluto (which is 5.0 h away at the time), and then returns (Event B) exactly 11.0 h later. estimate the time measured between events A and B by the ship's clock
An object made of a single atomic element weighs 2.4500 N in air and 2.1387 N when completely submerged in water. Calculate the density of the object
a block is pushed up 38 degree incline with a coefficient of kinetic friction of 0.10 by an applied force as shown. if F= 30N and M=8kg
When rebuilding her car's engine, a physics major must exert 450 N of force to insert a dry steel piston into a steel cylinder at a constant velocity. What is the normal force between the piston and cylinder
A(n) 331 g object is attached to a spring and executes simple harmonic motion with a period of 0.294 s. The total energy of the system is 1.7J. Find the force constant of the spring. (N/m) Find the amplitude of the motion (in cm)
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