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An aluminum pan whose thermal conductivity is 237 W/m · °C has a flat bottom with diameter 15 cm and thickness 0.4 cm. Heat is transferred steadily to boiling water in the pan through its bottom at a rate of 800 W. If the inner surface of the bottom of the pan is at 105°C, determine the temperature of the outer surface of the bottom of the pan.
A father racing his son has half the kinetic energy of the son, who has one-third the mass of the father, What is the original speed of the father
Only 25% of the intensity of a polarized light wave passes through a polarizing filter. What is the angle between the electric field and the axiz of the filter
A charged belt, 75 cm wide, travels at 25 m/sbetween a source of charge and a sphere. The belt carries chargeinto the sphere at a rate corresponding to 100 µA. Compute the surface charge density on the belt.
Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle. Calculate the magnitude of the net force
A thin, hollow 0.545 kg section of pipe of radius 10.0 cm startsrolling (from rest) down a 17.5 degree incline 5.60 m long. what will be its speed atthe base of the incline
A meter stick is supported on a fulcrum at the 39 cm mark. A 0.50 kg object is hung from the zero end of the meter stick, What is the mass of the meter stick
performing an experiment similar to millikans oil drop experiment a student measures these charge magnitudes.3.26
1. if the total electric current reaching the earths surface is nearly constatnt at 1000 a approximately how much
Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 25.7° above the horizontal, What is the magnitude of the net torque exerted on the branch by the children
Assume unpolarized light of intensity 197 W/m2 falls on the polarizer in the figure, and the angle in the drawing is 37.0°. What is the light intensity reaching the photocell?
A standing wave interference pattern is set up by radio waves among two metal sheets 3.80 ma part. That is the shortest distance among the plates that will produce a standing wave pattern. What is the fundamental frequency?
A 0.29 F capacitor is desired. What area must the plates have if they are to be separated by a 3.7 mm air gap
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