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A resistor is constructed of a carbon rod that has a uniform cross sectional area of 5.00 mm2. When a potential difference of 15.0 Volt is applied across the ends of the rod, the rod carries a current of 4.00 × 10-3 Amp.
a. Determine the resistance of the rod?
b. Determine the rod length?
A 100-kg streetlight is supported equally by two ropes. One rope pulls up and to the right, 40° above the horizontal; What is the tension in each rope
Water at a gauge pressure of P = 4.8 atm at street level flows into an office building at a speed of 0.98m/sthrough a pipe 5.6 cm in diameter. Calculate the gauge pressure in the pipe on the top floor
A power line carrying a sinusoidally varying current with frequency = 60 Hz and peak value I = 55 kA runs at a height of 7 m across a farmer's land. The farmer constructs a vertically oriented 2 m high 10 turn rectangular wire coil below the power..
A particle with a charge of +4.450e-3 C is placed on the y axis at y = 3.50 cm. Calculate the charge on a second particle
Unpolarized light of intensity I_0 is incident on a stack of 7 polarizing filters, each with its axis rotated 15 (degrees) cw with respect to the previous filter. What light intensity emerges from the last filter
Radio waves are electromagnetic waves that travel at a speed of 3.00*10 8 m/s, the speed of light. An AM radio station has an assigned frequency of 670 kHz, which means that the radio waves broadcast by the station are at this frequency. Discover..
A string is58.0cm long and has a mass of 3.00 g. A wave travels at5.25m/s along this string. A second string has the same length, butone-fourththe mass of the first. If the two strings are under the same tension, what is the speed of a wave along ..
A machine part rotates at an angular speed of 0.60 rad/s; itsspeed is then increased to 2.2 rad/s at an angular acceletation of0.70 rad/s2
An equipotential line surrounds a charge distribution of known value (35 mC). Two points A and B are selected on this equipotential line separated by 3.0 cm. What is the potential difference DV between these points
what is the strength of the electric field 4.0cm from a small glass bead that has been charged to positive 4.0cm?
One particle has a mass of 3.00 10-3 kg and a charge of +8.40 µC. A second particle has a mass of 6.00 10-3 kg and the same charge. Find the initial separation between the particles
A boxcar of mass 5.32 x 10^4 kg is rolling south at 3.49 m/s when it collides and couples with another boxcar that is rolling north at 5.12 m/s. Find the mass of the boxcar
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