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A toaster rated at 1040 Woperates on a 120 V household circuit and a 4.00 m length of nichrome wire as its heating element. The operating temperature ofthis element is 314°C. What is the cross-sectional area of the wire?
m2
Equipotential surfaces are to be drawn 130V apart near a very large uniformly charged metal plate carrying a surface charge density ? = 0.70?C/m2
A 60 kg person jumps from rest off a 5m high tower straight down into the water. find the average force that the water exerts on the diver
A radiometer has two square vanes (each measuring 1.0 cm by 1.0 cm), attached to a light horizontal cross arm, find the electromagnetic power absorbed by the blackened vane
The work function for platinum is 6.35 eV. Find the cutoff wavelength for platinum
what will be the frequency of vibrations. At one instant a bicyclist is 70m due east of a park's flagpole, going due south with a speed of 15m/s. Then, 19s later, the cyclist is 65m due north of the flagpole, going due east with a speed of 14 m/s.
A spherical Balloon is inflated at the rate of 144pie cubic inches per minute (in^3/min). How fast is the radius of the balloon changing when the radius is 4 inches? Recall the formula for volume of sphere: V(4/3) pieR^3?
A sinusoidal transverse wave traveling in the positive direction of an x axis has an amplitude of 1.0 cm, a wavelength of 22 cm, find the speed of the wave
The model airplane in Figure 5.6 is flying at a speed of 16.3 m/s on a horizontal circle of radius 19.6 m. The mass of the plane is 0.784 kg. The person holding the guideline pulls it in until the radius of the circle becomes 12.6 m. The plane speeds..
An inclined plane with friction, a massless/frictionless pulley, and two blocks, with m1 hanging and m2 resting on the plane. How do you find the acceleration
Some species use echolocation to determine the position and velocity of objects and prey. What is the sound frequency of the echo the bat hears
Scientists want to place a 3800.0 kg satellite in orbit around Mars. What speed should the satellite have to be in a perfectly circular orbit
What is the magnitude of the positive and negative charge? Two conducting spheres have identical radii. Initially they have charges of opposite sign and unequal magnitudes with the magnitude of the positive charge larger than the magnitude of the ..
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