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Suppose the total area of the contact surface of the four legs of a chair is 0.152 m^2 and the combined mass of the chair and person seated in it is 125 kg. How much pressure is in each leg where the leg makes contact with the floor?
A person with a weight of 237 lb stands on two feet with their weight equally distributed between the two shoes, What is the pressure on each shoe independently
The charge distribution within a spherical region bounded by radii a and b (a ) is given as ρv = k/r , where k is a constant. Determine the electric field intensity everywhere in space. What is the total flux passing through a surface at r = b?
Start from the expression of the electric filed outside an infinite sheet of uniform surface charge density, E=sigma/2epsilon, derive the electric field
A 285-kg stunt boat is driven on the surface of a lake at aconstant speed of 13.5 m/s toward a ramp, which is angled at27.1° above the horizontal. The coefficient of friction between the boat bottom and the ramp'ssurface is 0.150, and the raised e..
A string of 18 identical holiday tree lights is connected in series to a 190V source. The string dissipates 62.0 W. One of the bulbs burns out. The lamp has a wire that shorts out the lamp filament when it burns out. This drops the resistance of the ..
Particles called ?-mesons are created by accelerator beams. If these particles travel at 2.80 ? 108 m/s and live 2.60 ? 10-8 s, how long do they live as viewed in the laboratory
A state-of-the-art NMOS transistor might have a drain junction area of 0.5 x 0.5 urn. Calculate the junction capacitance associated with this junction.
A curve in a highway has radius of curvature 130 m and is banked at 3.5°. On a day when the road is icy, what is the safest speed to go around the curve
The speed of the fastest-pitched baseball was 41.0 m/s, and the ball's mass was 145 g. How many joules of kinetic energy did this ball have
What will be the equilibrium temperature when a 258 g block of copper at 271 °C is placed in a 142 g aluminum calorimeter cup containing 808 g of water at 14.9?
the planet venus requires 225 days to orbit the sun which has a mass m 1.99 x 1030 kg in an almost circular
The sodium D line is a doublet consisting of two wavelengths, 588.995 and 589.592 nm. Calculate the angular separation between these two lines in the first-order spectrum for a grating with 4000 lines per centimeter. Repeat for the second order.
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