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A long, straight, current-carrying wire runs from north to south.
1. If a compass is put underneath the wire, in which direction will the compass needle point?
2. A compass needle placed above the wire points with its N-pole toward the east. In what direction is the current flowing?
A 0.800 kg particle has a speed of2.00 m/s at point A andkinetic energy of 7.30 J at pointB.
An organ pipe is 2.0 m long. Assume the pipe is cylindrical withone closed and one open end. what is the longest wavelength λ for a standing sound wavepossible in the pipe?
If a real object is placed inside the focal point of a diverging lens,
A magnetic field has a magnitude of 1.20 10-3 T, and an electric field has a magnitude of 5.40 103 N/C. find the magnitude of the net force that acts on the charge
four charges are placed at the corners of a square of side 4 cm. What is the electrostatic potential energy of this system relative to infinity
A skier approaches the base of an icy, frictionless hill with a speed of 13.4m/s . The hill slopes upward at 24.0^\circ above the horizontal. Find the acceleration of this skier
A ball is moving at 4m/s and has a momentum of 48 kgm/s. What is the ball's mass
An electron enters a region of space containing a uniform 0.0000125-T magnetic field. Its speed is 195 m/s and it enters perpendicularly to the field. Find the radius of the electron\'s orbit
An iron tower in is 39 meters tall on a cold day, What is the HEIGHT of the tower on a hot day when the temp is 31.5 degrees Celcius
A dentist's mirror is placed 3.1 cm from a tooth. The enlarged image is located 6.3 cm behind the mirror. How is the image oriented relative to the object
There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hertz that can travel up to 10 kilometer. Find the intensity level of the infrasound 10 kilometer from the source
An object is placed 12.2 cm to the left of a diverging lens of focal length -5.10 cm. Find the distance d that places the final image at infinity
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