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A computer monitor uses 2.0 Amp of current when it is plugged into a 120 V outlet. The monitor is never turned off. Find the yearly cost of operating the monitor if the cost of electricity is $0.12/kWh?
1.4m/s is a typical walking speed. At what temperature would nitrogen molecules have an rms speed of 1.4 m/s
The equations of force and motion objective questions.
A 5-A current is maintained in a simple circuit that consistsof a resistor between the terminals of an idealbattery. how large is the resistance
A mass on a spring is observed to complete 15 oscillationsin 30 seconds. What are the period(seconds) and the frequency(Hz) of motion
What is the speed of the two carts at the moment while their speeds are equal?
A 2.0-C charge moves with a velocity of (2.0i + 4.0j + 6.0k) m/s and experiences a magnetic force of (4.0i - 20j + 12k) N. The x component of the magnetic field is equal to zero. Find out the y component of the magnetic field.
Two 10-cm-diameter charged rings face each other, What is the electric field at the center of the left ring
A 1500 kg artificial satellite will appear to be stationary to anobserver on Earth if its period is exactly equal to Earth'srotation period, i.e one day. (a) What must the orbitalradius of such a satellite be? and (b) What will be its orbitalspeed?
an electron is shot upward directly perpendicular to the lower plate of a parallel plate capacitor. its initial
a wire of length L has a resistance R if it is cut into three equal lengths that are placed side by side and tightly twisted together, what is the equivalent resistance of the twisted wires
A sustained force of 52N moves a model airplane 22m along its runway to provide the required speed for takeoff
A disk, with a radius of 0.25 m, is to be rotated like a merry-go-round through 1000 rad, starting from rest, gaining angular speed at the constant rate ?1 through the first 500 rad and then losing angular speed at the constant rate -?1 until it i..
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