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150g of steam at 100C (373K) is injected into a container containing 250g of ice and 150g water both at 0C (273K). c water = 4.186 J/gK , latent vaporization is =2257 J/g, latent fusion is 334 J/g. What is the change in entropy of the environment?
An astronaut at rest on Earth has a heartbeat rate of 70 beats/min. What will this rate be when she is traveling in a spaceship at 0.90c as measured (a) by an observer also in the ship and (b) by an observer at rest on the Earth?
A 60 ohm resistor is connected in series with a 30x10^-6 capacitor and a generator having a maximum voltage of 120 volts, what is the phase angle of the circuit
A small object of mass 3.58 g and charge -17.4 µC is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground
Assuming the motor is supplied through an equivalent 208 V source with an impedance of 0.18+j0.15W, determine the voltage at the motor terminals during normal operation (slip of 3%).
A(n) 84 g arrow is fired from a bow whose string exerts an average force of 110N on the arrow over a distance of 80cm. What is the speed of the arrow as it leaves the bow.
A 0.401 kg bead can slide on a curved wire, If the wire is frictionless and the bead is released with an initial speed of 12.8 m/s in the forward direction then find the speed of the bead at B
You are standing 1.15 m in fromt of a large shiny sphere that is 0.805 m in diameter. how tall is your image
At the moment of ignition the mass of a rocket is 100 kg. For the first 10 s it burns fuel at the rate of 5 kg/s. find The magnitude of the force developed by its engine
What is the distance between the centers of the two slits? Describe answer in m.
A 150 g aluminum cup contains 150 g of water and both are at 13 C. If you add 150 g of hot water at 90 C what is the final temperature at thermal equilibrium? How much hot water at 90 C needs to be added to achieve a final temperature of 44 C?
A student could either pull or push, at an angle of 30? from the horizontal, a 55kg crate on a horizontal surface, Calculate the minimum work required for both pulling and pushing
A 5.5 %u03BCC point charge is placed in an external uniform electric field that has a magnitude of 68000 N/C
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