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Cost of electricity varies but typical values are around $0.15/kWh. Using this price, calculate the cost of
(a) running a load of laundry through a dryer that takes 42.0 min and draws 5,300W,
(b) making a piece of toast in 3.00 min with a 980W toaster, and
(c) leaving a 50.0W light on for two weeks.
(d) For each of the previous cases, calculate how high you could lift your textbook that weights 3.5lbs if the process to convert the energy was 40% efficient.
(e) For each of the cases in parts (a) through (c), how much water could you vaporize? For full points, please clearly show all of you work so that I can learn how to do it. Thanks!
An apparatus shown constists of a pair of charge parallel plates (shown edge-on) in a uniform magnetic field of 1.50 T, obtain magnitude of the electric field between the plates
A 3.00-kg crate slides down a ramp. The ramp is 1.00 m in length and inclined at an angle of 30.0o. The crate starts from rest at the top, What is the speed of the crate at the bottom of this new ramp
One can not align the apparatus to eliminate entirely the effects of the Earth's magnetic field. calculate the component of the earth magnetic field perpendicular to the entering electron beam
A capacitor consisting of two plates separated by a distance d of 4.25 x 10^-3, with an area A of 8.15 x 10^-4 m^2, What is the numerical value of the energy for the capacitor
How various kilograms of nitrogen are boiled away in time of 7.50 h. car that hits a line of water barrels and takes 1.8s to stop.
A proton moving at 7.00 106 m/s through a magnetic field of magnitude 1.74 T experiences a magnetic force of magnitude 7.40 10-13 N. What is the angle between the proton's velocity and the field
An athlete competing in the hammer throw swings a 4.0 kg hammer on a chain in a horizontal circle with a 5.4 m diameter. What is the tension in the chain attached to the hammer at that speed
A power station uses 100 kV to deliver power to a building. The building has a total resistance of 12.5kV. How much power is delivered to the building
A 5.1 kg bucket of water is raised from a well by a rope. find the force exerted by the rope on the bucket.
At a distance rl from point charge the magnitude of the electric field created by charge is 248 N/C. After a distance r2 from the charge, field has a magnitude of 132N/C. Find ration r2/r1.
A 2.90 H coil with a resistance of 6.41×101 ? is in series with a 1.14×103 ? resistor. What is the peak value of the potential difference across the coil
You throw a ball vertically upward from the edge of the roof of the Bisdorf building with a speed 15.0 m/s. Find the position and velocity of the ball 1.00 s after leaving your hand
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