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Car headlights use concave mirrors. There's a concave mirror in the back of the headlight socket, and the actual light bulb is placed somewhere along the principal axis. Your question for this essay: where should that bulb be placed for the best headlight design? Should it be at the focal point? At the radius of curvature? Somewhere else?
Suppose that electrical energy costs about $0.098/(kW · hour), If the electric potential provided by the electric company was 120 V, what was the average current in all circuits in the author's house
a wire carries a steady current of 4.50 a. a straight section of the wire is 0.750 m long and lies along the x axis
a 17.7-kg object hangs in equilibrium at the end of a rope taken as massless while a wind pushes the object with a
A blue car of length 4.41 m is moving north on a roadway that intersects another perpendicular roadway (see figure below). The width of the intersection from near edge to far edge is 30.0 m.
A professor's office door is 0.90m wide, 2.2m high, 4.2cm thick; has a mass of 28kg , and pivots on frictionless hinges. What is the moment of inertia of the door
a solenoid used to produce magnetic fields for research purposes is 2.5m long with an inner radius of 30cm and 1200
A block is sliding along a frictionless roller coaster. It starts at height h above the ground with some unknown initial speed vo. evaluate the compression of the spring
A charged particle of mass m and charge +q is placed in the vertical electrical field E(x)= A-Cx, Find expression describing the angular frequency of the charged particle oscillations
points a and b are on the same horizontal line with the foot of a hill and the angles of depression of these points
A 9180 kg ancient treasure chest lies at the bottom of the sea. Its volume is 0.839 m3. How much force is needed to lift the chest
In a two-slit interference pattern, the intensity at the peak of the central maximum is I_zero. I/I_zero = 0.772 if this helps Part B What is the path difference for light with a wavelength of 477 nanometers from the two slits at a point where the ph..
Consider the lead isotope 207Pb. How many electrons are in a 207Pb neutral atom? How many protons are in a 207Pb neutral atom? How many neutrons are in a 207Pb neutral atom? The lead nucleus has a diameter of 14.2 fm. What is the electric potential..
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