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Q. The interatomic spring stiffness for tungsten is determined from Young's modulus measurements to be N/m. The mass of one mole of tungsten is kg. If we model a block of tungsten as a collection of atomic "oscillators" (masses on springs), what is one quantum of energy for one of these atomic oscillators? Note down that since each oscillator is attached to two "springs", and each "spring" is half the length of the interatomic bond, the effective interatomic spring stiffness for one of these oscillators is times estimated value given above.
If she is served 200 of coffee at 85 in a well-insulated container, how much ice at 0 must she add to obtain a final temperature of 33.
The power needed to operate your body is about 100 {rm watts}. Suppose your body could run on fusion power and could convert a total of 0.7 of its mass into energy. How much energy would be available through fusion? Assume the mass is 70kg.
imagine someone drops an apple from a vertical distance.
Determine the location at which the tuning is formed and the vibrating frequency of a string to form a standing wave pattern.
A flat sheet of crown glass has a thickness of 2.3 cm. It is on top of a flat sheet of crystalline quartz that has a thickness of 3.6 cm. Light strikes the crown glass perpendicularly.
A box of books weighing 334 N is shoved across the floor by a force of 479 N exerted downward at an angle of 33° below the horizontal. What is the maximum coefficient of kinetic friction between the box and the floor that allows the box to move with ..
icyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass.
For a damped oscillator with a mass of 380g, the spring constant 120 N/m and a damping coefficient of 76 g/s, what is the ratio of the amplitude of the damped oscillations to the initial amplitude at the end of 28 cycles.
If the car had been going 10m/s but had stopped in the same d = 167m distance, what would its acceleration have been.
What is its velocity at impact? What will its average velocity be? What will its average speed be.
What is the linear charge density together the arc.
A charge of -5.5 micro Coulombs is placed at the origin of a coordinate system. Another charge of -5.5 micro Coulombs is placed at x = +0.22 m, y = +0.15 m.
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