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A three cell flashlight draws a current of 0.60A what is the operating resistance of the light bulb if each cell provided a power of 1v when delivered?
A drop of unknown liquid is placed at the point on a glass surface where internal reflection is occurring at ? = 48°. What is the refractive index of the liquid
A small, plastic sphere of mass m = 111 g is attached to a string There is an electric field of 122 N/C directed along the + x axis
Two identical point charges (q = +6.70 10-6 C) are fixed at diagonally opposite corners of a square with sides of length 0.475 m. Determine the speed of the test charge when it reaches the center of the square
In a double slit experiment the separation among the slits is 0.15mm, the distance between the slits and the screen is 140 cm, the wavelength of the light utilized is 643 nm.
A 57.0 kg cheerleader uses an oil-filled hydraulic lift to hold four 130 kg football players at a height of 1.20 m. what is the diameter of the football players' piston
a single mass m1 4.0 kg hangs from a spring in a motionless elevator. the spring is extended x 11.0 cm from its
A train siren indicating that the stationary train is ready to leave the station has a frequency of 80 Hz. What frequency is perceived by the occupant of a car traveling away from the train at 30 m/s? The speed of sound in air is 343 m/s.
Assume that the protons in a hot ball of protons each have akinetic energy equal to kT, what is the least separation anytwo protons can have
The 1.20kg head of a hammer has a speed of 8.1m/s just before it strikes a nail and is brought to rest. Estimate the temperature rise of a 14gg iron nail generated by 5.0 such hammer blows done in quick succession
In this week's experiment, we will accelerate electrons and inject them into magnetic fields generated by Helmholtz coils in the direction perpendicular to the magnetic fields, what is the final speed of the electrons
As part of a carnival game, a 0.503-kg ball is thrown at a stack of 15.8-cm tall, 0.383-kg objects and hits with a perfectly horizontal velocity of 10.8 m/s. what is the moment of inertia of the object
Two point charges are on the y-axis. A 5.0 µC charge is located at y = 1.40 cm, and a -2.30 µC charge is located at y = -1.60 cm. Find the total electric potential at the origin
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