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A hollow cylinder with an inner radius of 3mm and an outer radius of 20mm conducts a 3A current. What is the magnitude of the magnetic field at a point 12mm from its center? Assume that the current density is uniform throughout the wire.
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Question: Suppose we could shrink the earth without changing its mass. At what fraction of its current radius would the free-fall acceleration at the surface be three times its present value? The response must be typed, ...
Blue-green light has a frequency of about 6.00 x 10^14 Hz. Determine its wavelength. Compare this wavelength to the size of an atom (about 10^-10 m) by calculating the ratio: wavelength/(atom size).
Question: A pendulum has a period of 1.95 s on Earth. What is its period on Mars, where the acceleration of gravity is about 0.37 that on Earth? Express your answer to two significant figures and include the appropriate ...
Question: Storm clouds build up large negative charges, as described in the chapter. The charges dwell in charge centers, regions of concentrated charge. Suppose a cloud has -25 C in a 1.0-km-diameter spherical charge ce ...
The wind blows with a speed of 31.9 m/s over the roof of your house. Assuming the air inside the house is relatively stagnant, what is the pressure difference at the roof between the inside air and the outside air? Answe ...
Question: A small 100 g cart is moving at 1.20 m/s on a friction less track when it collides with a larger, 1.00 kg cart at rest. After the collision, the small cart recoils at 0.850 m/s. What is the speed of the large c ...
What is the (magnitude of the) velocity of a rollercoaster at the bottom of a track that is 89.8 m high if it starts from rest? (Use the value g = 9.8 m/s2 for the acceleration of gravity.) Please provide work to explain
Question: Part A: Suppose that you want to construct a line with slope m=3 that passes through the point (2,1). You would begin by setting up the equation y = 3x + b. If you plug in the coordinates for any point on that ...
Question: A pendulum has a period of 1.77 s on Earth. Part A: What is its period on Mars, where the acceleration of gravity is about 0.37 that on Earth? Express your answer to two significant figures and include the appr ...
Question: The potential difference between the surface of a 3.5 cmdiameter power line and a point 1.0 m distant is 3.6 kV. What is the line charge density on the power line? The response must be typed, single spaced, mus ...
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