Define the effective resistance
The edges of a cube consists of equal resistors of resistance R, which are joined at the corners. Let a battery be connected to two opposite corners of a face of the cube. What is the efective resistance?
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A 5.00-kg steel ball is dropped onto a copper plate from a height of 10.0 m. If the ball leaves a dent 3.20 mm deep, what is the average force exerted by the plate on the ball during the impact?
Find the thrust factors required and show that the speed in the final orbit is two times greater than the initial speed.
The masses of the earth and moon are 5.98 x 1024 and 7.35 x 1022 kg, respectively. Identical amounts of charge are placed on each body, such that the net force (gravitational plus electrical) on each is zero. What is the magnitude of the charge pla
A car is driven at constant speed over a circular hill and then into a circular valley with the same radius. At the top of the hill, the normal force on the driver from the car seat is 0. The driver's mass is 79.0 kg. What is the magnitude of the
How far would the line stretch? How long would it take a beam of light to travel from one end to the other of the line of atoms?
The prescribed powers (in diopters) for the bifocals are +0.80 and -1.60, and these bifocals give the patient normal vision. (a) Without the bifocals, what is the patient's near point? (b) Without the bifocals, what is the patient's far point?
A beam of accelerated protons from the Large Hadron Collider can be used to "spray paint" an insulator with protons. Calculate the number of protons needed to paint the cover of your textbook with a charge density of 3 x 10-6 C/m2.
A hockey puck slides off the edge of a table with an initial velocity of 22.0 m/s and experiences no air resistance. The height of the tabletop above the ground is 2.00 m. What is the angle below the horizontal of the velocity of the puck just bef
A 0.05kg arrow is fired from 1.5m above the ground at an angle of 35deg. If the bow is pulled back 0.95m and has a spring constant of 450N/m, does the archer get a bull's-eye if the target is 775m away and the center is 1.2m off the ground and the
A piece of copper at 320 degrees celcius is dropped into 1.9 kg of water at 16 degrees celcius. If the equilibrium temperature is 21 degrees celcius , what is the mass of the copper?
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