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A metal ball with a mass of 2.29·10-6 kg and a charge of +4.57 mC has a kinetic energy of 4.51·108 J. It is traveling directly at an infinite plane of charge with a charge distribution of +3.47 C/m2. If it is currently 1.61 m away from the plane of charge, how close will it come to the plane before stopping?
How much Power does it take to accelerate the 70,000 lb rail car from rest to 10mph in 20 feet with 1ft dia. wheels.
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 41 at 20°C. what is the temperature coefficient of resistivity
1. given the energy range of a radiation source to be 0.5 ev. calculate the same energy range in joules. dont use the
A uniform horizontal rod of mass (M) and length (l) rotates with angular velocity (omega) about a vertical axis through its center. Determine the angular momentum of the system about the axis
Two point charges -90.0 mC and +40.0 mC, fixed on the x-axis, At what point along x-axis is the electric field zero
A 423 Hz sound wave travels through a substance. What is the speed of sound in the substance
Two charges are positioned on the x axis. A charge of +4 ?C is located at x = 5 cm and a charge of +2 ?C is located at x = -5 cm. What is the direction of the electric field at the origin
The 1.5 kg balls are attached to the ends of a thin rod of length 42.0 cm and negligible mass. Through what angle will the system rotate before it momentarily stops
If the wire is heated to 38.0°C while the 7.0-V potential difference is maintained, what is the resulting current in the wire
The circular top of a can of soda has a radius of 0.029m. The pull-tab has an area of 4.13 10-4m2. The absolute pressure of the carbon dioxide in the can is 1.4 x10^5Pa. Find out the force that this gas generates.
consider a system of two lenses. The first lens is a converging lens with a focal length f1=21.4 cm. compute is the image real or virtual
In a head on collision, a car stops in .10 seconds from a speed of 14 meters per second. The driver has a mass of 70 kg, and is, fortunately, tightly strapped into his seat. What force is applied to driver by his seat belt during that fraction of ..
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