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A 1.2 m long bar of porcelain is placed in a laboratory furnace and heated to 1005 degrees C. If the final length of the bar is 1.207 m, what was the original temperature? Please show your work.
An ideal gas occupies a volume of 3.0 cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container
You throw a ball toward a wall at speed 39.0 m/s and at angleθ0 = 37.0° above the horizontal (Fig. 4-35).The wall is distance d = 19.0 m from the release point ofthe ball.
Determine the first three normal-mode frequencies for a pipe of length L that is closed at both ends. Use the results of part A to estimate the normal-mode frequencies of a shower stall. (Assume that a shower has a length of 1.42{\rm m} ).
If two parallel conducting plates were separated by .60 cm, and the potential difference between the plates is 90V, the magnitude of the electric vector midway between the plates would be?
The energy flow per unit time per unit area (S) of an electromagnetic wave has an average value of 601 mW/m^2
A molecule of DNA is 2.17 micrometers (10^-6 meters)long. The ends of the molecule become singly ionized -negative on one end, positive on the other. Determine the effective spring constant
Distinguish constructive conflict from socio emotional conflict and explain how to apply the former without having the latter become a problem.
A mass m slides without friction on a 1-dimensional track. The mass is moving from left to right with initial velocity v0. Determine the position where the mass will come to rest
A short mild steel column with fixed ends has a cross section of 100mm by 50mm. Assuming a safety factor of 6 calculate the load that it can safely support?
A 1600 kg car drives around a flat 210m -diameter circular track at 25m/s. What is the magnitude of the net force on the car
A 2kg mass is loaded into a spring cannon. The cannons spring has a constant k=4000N/m and the spring is compressed 0.8m. The mass is initially at rest. what is the initial velocity of the mass
Suppose that charges on a dipole antenna oscillate slowly at a rate of 1 cycle/s, and the antenna radiates electromagnetic waves in a region of space. What is the period of the charge oscillation
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