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A stone is dropped into a well and a splash is heard 2 seconds later. If the speed of sound in air is given as 343m/s, what is the depth of the well? Explain please.
Bacteria vary somewhat in size, but a diameter of 2.0 nanometers is not unusual. What would be (a) volume (in cubic centimeters) and (b) surface area (in square millimeters) of such a bacterium, assuming that it is spherical.
A 12 kg monkey climbs up a massless rope that runs over a frictionless tree limb and back down to a 16 kg package on the ground, What is the magnitude of the least acceleration the monkey must have if it is to lift the package off the ground
A street lamp weighs 152N. It is supported equally by two wires that form the angle of 120° with each other. What is the tension of each of these wires.
A simple fuel level gauge can use the dielectric constant of the fuel to indicate its level in a tank. For which fuel is this a more appropriate gauge
the middle c string on a piano is under a tension of 892 n. the period and wavelength of a wave on this string are
A steam turbine is limited to a maximum inlet temp of 800 c the exhaust pressure is .0100 mpa and the moisture in the turbine exhaust is not to exceed 9.00%. What is maximum power output per unit mass flow rate
A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. The intensity of the sound is 2.30 10-6 W/m2 at a distance of 110 m from the explosion. Find the distance from the source at which the int..
The capacitor in an LC circuit has a maximum charge at t= 1 ms. What is the circuit's period of oscillation
Compute the kinetic and potential energies of an airplane weighing 5.00 tons flying at a height of 30.0 × 103 ft at 500. mph. Give answer in both SI and Engineering English units. Assume standard gravity.
Two wires are identical, except that one is silver (resistivity = 1.59×10-8 ?·m) and the other is platinum (resistivity = 1.06×10-7 ?·m). The silver wire has resistance of 1.56 m?. What is the resistance of the platinum wire?
A series AC circuit contains a resistor, an inductor of 200 mH, a capacitor of 5.20 µF, and a source with ?Vmax = 240 V operating at 50.0 Hz. The maximum current in the circuit is 180 mA.
A mercury barometer reads 750 mm on the roof of a building and 766 mm on the ground. Assuming a constant value of 1.29 kg/m3 for the density of air, determine the height of the building
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