What are the ages of the two twins
Two identical twins A and B are each 20 year old when B starts on a round trip to a star 10 light years away. If he travels at an average speed of 0.99c, What are the ages of the two twins when B returns?
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What is the excess charge on a conducting sphere of radius r = 0.37 m if the potential of the sphere is 1625 V and V = 0 at infinity?
A tank has two rooms separated by a membrane. Room A has 1 kg air and volume 0.5 m3, room B has 0.75 m3 air with density 0.8 kg/m3. The membrane is broken and the air comes to a uniform state. Find the final density of the air.
A solid sphere of weight 36.0 n rolls up an incline at an angle of 30.0. At the bottom of the incline the center of the mass of the sphere has a translational speed of 4.90 m/s. a) what is the kinetic energy of the sphere at the bottom of the incli
A nozzle receives 0.1 kg/s steam at 1 MPa, 400oC with negligible kinetic energy. The exit is at 500 kPa, 350oC and the flow is adiabatic. Find the nozzle exit velocity and the exit area.
The virial equation of state for n-butane at 460K is Z=1+A/V+B/V^2 in which A =-265 cm^3/g and B= 30250 cm^6/(g*mole^2).
A speedboat (220 kg), making a circular turn (r=32 m) around a bouy. During turn the engine causes a net tangential force of 550 N. The initial tangential speed of the boat was 5 m/s. (a) find the tangential acceleration, (b) after 2 s, find the c
An ideal gas Carnot cycle with air in a piston cylinder has a high temperature of 1200 K and a heat rejection at 400 K. During the heat addition the volume triples. Find the two specific heat transfers (q) in the cycle and the overall cycle effic
What is the minimum number of (2m x 3m) plates required for this design? Neglect kerf loss and restrict welding to only the flange web junction.
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