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Upstream of a normal shock in air the pressure is 14.7 psia and the temperature is 528R. Downstream of the shock the air pressure is 76.8 psia. What is the Mach number upstream of the shock? What is the Mach number downstream of the shock? What is the temperature downstream of the shock. What is the change in entropy across the shock?
A mass attached to a spring stretches it 2.5 cm from equilibrium. What is the angular frequency of the oscillation
A 20x telescope has a 12-cm diameter objective lens. What minimum diameter should the eyepiece lens have to collect all the light rays from an on axis distant source.
A spider hangs from a strand of silk whose radius is 4.0*10^-6m. Thedensity of the silk is 1300kg/m^3. determined the mass of the spider
What is the instantaneous power, at a time of 0.00700 seconds, dissipated by a 200 ohm resistor in a resonant AC circuit powered by a generator with a 21.0 V highest potential difference operating at 5000 rad/s .
If the merry-go-round completes one revolution every 5.2 s, find out the angular speed and the linear speed of each child.
How much work did movers do (horizontally) pushing a 140{rm kg} crate 10.60 m across a rough floor without acceleration, if the effective coefficient of friction was 0.700.
A 3.00kg mass and a 5.00kg mass hang vertically at opposite ends of a rope that goes over an ideal pulley. what is the magnitude of the acceleration of the masses
One cubic meter (1.00 m3) of aluminum has a mass of 2.70 103 kg, and the same volume of iron has a mass of 7.86 103 kg. Find the radius of a solid aluminum sphere
If you move towards a pipe at a speed of 3.3m/s, what frequency will you hear from this organ pipe? speed of sound is 330m/s
A point charge q = 1.45 nC is placed in the center of a spherical cavity of an isolated spherical conductor of inner radius 4 cm and outter radius 12cm
A weight of 45.0 N is suspended from a spring that has a force constant of 180 N/m. Determine the maximum value of the driving force
An archer's bow can be treated as a spring with k = 2,900 N/m. what is the work done on the bow as the bowstring is pulled back into position
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