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A typical laptop consumes 60-120 W of power, depending on usage. Using an average power consumption, what is the monthly cost of operating a laptop 7.68 h per day for 30 days if the cost of electricity is $0.173 per kW⋅h?
In a certain cyclotron a proton moves in a circle of radius 0.650m. The magnitude of the magnetic field is 1.50 T.(a) What is the oscillator frequency (in Hz)?(b) What is the kinetic energy (in eV) of theproton?
In a Broadway performance, an 65.2-kg actor swings from a 4.50-m-long cable that is horizontal when he starts. What maximum height do they reach after their upward swing
Find the energy transferred in 1 h by conduction through a concrete wall 2.2 m high, 3.90 m long, and 0.20 m thick if one side of the wall is held at 20°C and the other side is at 5°C
A step-down transformer is used for recharging the batteries of portable devices. Find the power delivered to the CD player
Suppose a 65 kg person stands at the edge of a 6.5 m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1850 kg m2. Calculate the angular velocity of the turntable
Two capacitors, C1 = 6.00 µF and C2 = 14.0 µF, are connected in parallel, and the resulting combination is connected to a 9.00-V battery. (a) Find the equivalent capacitance of the combination.
An isolated conductor has net charge +10 x 10-6 C and a cavity with a point charge q = +3 x 10-6 C. What is the charge on the cavity wall and the outer surface
A proton enters a uniform magneticfield that is at a right angle to its velocity. What is the magnitude of its linear momentum
A uniformly charged sphere has a potential on its surface of 450 V. What is the radius of the sphere
The drawings show three charges that have the same magnitude but different signs. In all cases the distance d between thecharges is the same. The magnitude of the charges is|q|=8.8 μC, and the distance between them isd=6.2 mm. Determine the magnitude..
A car is traveling with a constant velocity when the driver suddenly applies the brakes, giving the car a deceleration of 3.50 m/s2, what was the magnitude of the car's original velocity
A long wire is known to have a radius greater than 4.0 mm and to carry a current that is uniformly distributed over its cross section. The magnitude of the magnetic field due to that current is 0.30 mT at a point 4.0 mm from the axis of the wire, ..
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