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A lightbulb requires a current of 0.59 A to emit a normal amount of light. If the light is left on for 2.0 h, how many electrons pass through the bulb?
Two 10-cm-diameter charged rings face each other, 28cm apart. The left ring is charged to -20nC and the right ring is charged to +20nC. What is the magnitude of the electric field
a uniform rod of length l and mass m is suspended by two light strings each of length l. find the tension in the
An initially neutral conductor contains a hollow cavity in which there is a -100 nC point charge. what is the charge on the inner wall of the cavity wall
One liter (1000 cm ^3) of oil is spilled onto a smooth lake it the oil spreads out uniformly unit it makes an oil slick just one molecule thick with adjacent molecules just touching estimate the diameter of the oil slick
To make a bounce pass, a player throws a 0.60 kilogram basketball toward the floor. find what impulse delivered to it by the floor
A special electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop at an amusement park. What is the speed of the rider at the top of the loop
A 1.7-nF capacitor charged to 83.0 V and a 7.7-nF capacitor charged to 24.0 V are connected with the negative plate of each connected to the negative plate of the other. What is the final charge on the 7.7-nF capacitor?
To fit a contact lens to a patient's eye, a keratometer can be used to measure the curvature of the cornea-the front surface of the eye. Determine the radius of curvature of the cornea
A circuit consists of a coil that has a self-inductance equal to 4.80 mH and an internal resistance equal to 13.0 Ω, an ideal 15.0 V battery, and an open switch--all associated in series. At t = 0 the switch is closed. Discover the time when the rate..
A modern house is wired for 120.0 V, and the current is limited by circuit breakers to a maximum of 290.0 A. (For the purpose of this problem, treat these as DC quantities.) Calculate the minimum total resistance the circuitry in the house can hav..
Consider a tennis ball that is hit by a player at the baseline with a horizontal velocity of 50 m/s (about 110 mi/h). What is the ball's angular velocity
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of a single wavelength. What is the wavelength of the light that falls on the slits
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