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Consider a 1.00g piece of Na.
a.How many conduction electrons are there?
b. How many electron states are there in each energy band?
An organ pipe open at one end has a length of 60 cm. If the speed of sound in air is 340 m/s, what is the lowest frequency produced by the organ pipe
An airplane propeller is 2.14 meter in length (from tip to tip) with mass 107 kilogram and is rotating at 2900rpm about an axis through its center. Determine what would its angular speed have to be
a jet engine suspended beneath the wing of an airplane. The weight of the engine is 11800 N, find the magnitude of the torque due to the weight
A 1.30 m long ramp is inclined at 14 degrees to the horizontal. A solid ball is released from rest at the top of the ramp. Find the ball's speed at the bottom of the ramp
What is the axial thermal stress and strain in AB if the structure is made out of wood (CTE= 0.000020/degF) or aluminum - what are the internal forces in each member?
a 4000-lb. automobile is supported on four springs each with stiffness k150lbin. when the vehicle is traveling over a
an initally stationary 15-kg crate of cheese wheels is pulled via a cable a distance d=5.70m up a frictionless ramp to a height of h=2.50m, what is the power rating of the lifting device
A demonstration gyroscope consists of a uniform disk with a 41-cm radius, mounted at the midpoint of a light 58-cm axle, How fast is the gyroscope precessing, in units of rad/s, if the disk is spinning around the axle at 28 rev/s
For a damped oscillator with a mass of 360 g, a spring constant 110 N/m and a damping coefficient of 87.00 g/s, what is the ratio of the amplitude of damped oscillations to the initial amplitude at the end of 28 cycles.
How much would an 80.0kg person weigh) on mars where an acceleration of gravity is 3.93m/s^2 and (b) on earth's moon where the acceleration of gravity is 1.63m/s^2.
When light of two different wavelengths passes through two parallel slits, the 11th-order maximum of one wavelength and the 10th-order maximum of the other wavelength occur at the same location
A tuning fork with a frequency of 440 Hz is held above a resonance tube that is partially full with water. Assuming that the speed of sound in air is 342 m/s, for what three smallest heights of the air column will resonance occur?
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