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A long, straight, current-carrying wire runs from north to south.
1. A compass needle placed above the wire points by its N-pole toward the east. In what direction is the current flowing?
2. If a compass is put underneath the wire, in which direction will the compass needle point?
An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is Save = 1.23×109 W/m2. What is the RMS value of the electric field
a 2.73 kg wood block is launched up a wooden ramp that is inclined at a 30deg angle. the blocks initial speed is 10.15
a rotating fan completes 1200 revolutions every minute. consider a point on the tip of a blade at a radius of 0.19 m.a
Amtrak's 20th-Century Limited is en route from Chicago to New York at 120km/h when the engineer spots a cow on the track. What is the magnitude of the train's acceleration
a flexible chain of weight w hangs between 2 pointsnbspa and b at the same level. the inclination of chain with
A parallel plate capacitor has a potential difference between the plates of 80 V. what is the electrical energy stored by this capacitor
A 18V battery is hookedup to a circuit series. It's current current goes through the circuit as followed: A 3Ω resistor is connected inparallel to a 6Ω resistor. These are joined in series to a4Ω.
q1. a proton orbits a long charged wire making 1.50 times 10 6 revolutions per second. the radius of the orbit is 1.60
A white billiard ball with mass mw = 1.3 kg is moving directly to the right with a speed of v = 3.42 m/s and collides elastically with a black billiard ball with the same mass mb = 1.3 kg, What is the final speed of the white ball
A wire has a resistance of 22.9 ohm. It's melted down, and from the same volume of metal a new wire is made that is four times longer than the original wire. Find what is the resistance of the new wire
Determine what is the relationship between the voltage drops across the resistors and the terminal voltage for resistors connected in series
Cliff and Will are carrying a uniform 2.0m board of mass 74kg. Will is supporting the board at the end while cliff is 0.6m from the other end, Find the normal forces exerted by Cliff and Will
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