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The speed of sound in air is approximately 340 m/s. The speed of sound in steel is approximately 5900 m/s. If your friend strikes one end of a steel pipe with a hammer while you listen at the other end, you will hear two distinct sounds: one traveling through the air and the other traveling through the steel pipe. If the pipe is 700 meters long, how much time elapses between the two sounds?
Two nanowires are separated by 1.6 nm as measured by STM. Inside the wires the potential energy is zero, but between the wires the potential energy is greater than the electron's energy by only 1.4 eV.
A nearsighted person cannot read a sign that is more than 4.8 m from his eyes. To deal with this problem, he wears contact lenses that do not correct his vision completely, but do allow him to read signs located up to distances of 11.9 m from his ..
A cylinder of gas is at room temperature (20degreesC). The air conditioner breaks down, and the temperature rises to 62degreesC. What is the new pressure of the gas relative to its initial pressure (p1)?-----xp1
(a) How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 6.00 cm2? (b) Find the maximum charge if bakelite is used between the plates instead of air.
an airplane has a velocity relative to the air of 193 ms in a westerly direction. if the wind has a speed relative to
Repeat Problem I I. I I for an n-type silicon substrate if the measured threshold voltage is VT = -1.50 V. Determine the n-type doping concentmtion.
What is the speed of the arrow as it leaves the bow.
An electron is released from rest in an electric field of 1.50 x 10-10 N/C pointing to the right. After the electron has traveled a distance of 1.0m, what is its velocity
display a pendulum bob is suspended from a pivot. show that if I draw the pendulum back by an angle θ, the center of the bob is elevated by the distance.
A horizontal force of 80N acts on a mass of 6 Kg resting on a horizontal surface. Calculate the total energy expanded in the acceleration
Tarzan, whose mass is 95.0 kilogram, swings from a 3.40 meter vine that is horizontal when he starts. Find the height of the highest tree limb they can reach on their upward swing
A coil of inductance 110 mH and unknown resistance and a 1.4 ?F capacitor are connected in series with an alternating emf of frequency 980 Hz. what is the resistance of the coil
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