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An electron moving from the negative terminal to the positiveterminal of a 12 volt battery gains(or loses) how much energy? Indicate whether it is a gain or lost in energy. Why
1. Sketch the two terminal "plates" of the battery and theelectric field vector between them.2. Sketch the direction the charge will move between the plates and the force on the charge.
a uniformly charged disk radius r and surface charge density 1.70 microcm2 lies in the xy plane with its center at the
Lead has a greater density than iron, and both are denser than water. Is the buoyant force on each one the same? Explain
How many 104W lightbulbs can you use in a 113 V circuit without tripping a 17 A circuit breaker? (The bulbs are connected in parallel that means that the potential difference across each lightbulb is 113V.)
Water is pumped at 250 m^3/min from a lake into a tank 65.0 m above the lake. What power (in kW) must be delivered by the pump
If a car traveling at 66 km/h will skid 20 m as its brakes lock, how far will it skid if it is traveling at 120 km/h when its brakes lock.
a 25 gram bullet moving at 550 ms strikes and imbeds itself in a 3.5-kg wooden block that is at rest on a level
Water is flowing in a cylindrical pipe of varying circular cross-sectional area, and at all points the water completely fills the pipe. What is the radius of the pipe at this point
Two concentric metal spheres are found to have a potential difference of 846.0 V when a charge of 3.586·10-8 C is applied to them. What is the radius of the inner sphere
A camera flashtube requires 8J of energy per flash. The flash duration is 2m/ss}. What power does the flashtube use while it's flashing?
A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg/m3, find the volume of helium in the balloon when fully inflated
A cue ball m1 = 0.39 kg is shot at another billiards ball m2 = 0.59 kg which is at rest. The cue ball has an initial velocity of v =9.5 m/s. What is the cue balls final velocity in m/s
A wheel 65 cm in diameter accelerates uniformly from 230 rpm to 355 rpm in 7s. How far will a point on the edge of the wheel have traveled in this time.
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