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A compact fluorescent light bulb (CFL) consuming 9 W electricity produces the same light output from a 40 W incandescent light bulb (incandescent light bulbs will be banned soon in Canada due to their low efficiency for producing light). The rated average life of a CFL is 12,000 hours. How much money is saved through the life of a CFL based on the SaskPower rate of $0.106 per kW-hour?
this is a regulated dc power supply design problem. the students must choose the values of the following parameters
A 16.0-m uniform ladder weighing 480 N rests against a frictionless wall. Find the horizontal and vertical forces the ground exerts on the base of the ladder when an 820-N firefighter has climbed 3.90 m along the ladder from the bottom
q1. the rotational inertia of a collapsing spinning star changes to 45 its initial value. what is the ratio of new
Here is the familiar pair of carts connected by a spring. Determine what are the relative speeds of the carts when the spring is released
Two 1.5cm -diameter disks face each other, 2.0mm apar, What launch speed must the proton have to just barely reach the positive disk
A light stick with two masses attached to it is spinning about its center at 5 revolutions per minute. The length of the stick is 2.5 meters and the masses are 1.5 kg each.
a parallel-plate capacitor has plates separated by 0.76 .part a if the electric field between the plates has a
ball 1 with m1= 4.00kg is connected through a mass less rod with ball 2 with m2= 3.00kg. What is the net force on each ball
The air pressure above the liquid in figure is 0.532 atm. Determine the air pressure in the bubble suspended in the liquid
a retarding force is applied to a body moving in a straight line so that during an interval of its motion its speed v
a solid cylinder rolls down an inclined plane without slipping. what is the angle of the incline to the horizontal
A 1000-turn loop (radius = 0.032 m) of wire is connected to a (20 ohm) resistor, What is the direction of the induced current
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