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In a parallel-flow heat exchanger, the inlet and exit temperatures of the hot fluid are 80 ºC and 40 ºC respectively and the cold fluid enters the heat exchanger at the temperature if 10 ºC. If the relative thermal capacity (Cmin/Cmax) in the heat exchanger is 0.6, calculate the effectiveness of the heat exchanger.
A neutron (mass 1 u) strikes a deuteron (mass 2 u) and the two combine to form a tritium nucleus. What was the velocity of the deuteron
A mass m = 14 kg is pulled along a horizontal floor, with a coefficient of kinetic friction ?k = 0.09, for a distance d = 7.9 m. What is the work done by tension before the block gets to the incline
Water at 22.0 °C is sprayed onto 0.218 kg of molten gold at 1063 °C (its melting point). The water boils away, forming steam at 100.0 °C and leaving solid gold at 1063 °C. What is the minimum mass of water that should be used?
What is the acceleration of the baseball and what is the acceleration in g's - what was the rocks velocity when it hit the water?
A young hockey player stands at rest on the ice holding a 1.3-kg helmet. The player tosses the helmet with a speed of 4.6 m/s in a direction 9° above the horizontal, and recoils with a speed of 0.22 m/s. Find the mass of the hockey player.
Red light of wavelength λ = 632.8 nm is incident on apair of slits whose separation is 0.70 mm. What is the separation of neighboring interference maxima on a screen 170 cm from theslits?( mm)
hw many homes were sold during the last month?
According to the argument laid out in the lecture, in what sense can sociological theory be an object for sociology, as any other sociological object? Explain and illustrate
A 30-kg shopping cart full of groceries sitting at the top of a2.0-m hill begins to roll until it hits a stump at the bottom ofthe hill. How deep is the dent made in the car?
What would have to be the self-inductance of a solenoid for it to store 9.6 J of energy when a1.56-A current runs throught it? If this solenoid's cross-sectional diameter is 4.10 cm, and if you could wrap its coils to adensity of 10 coils/mm, how l..
Take the speed of sound to be 340 m/s. A thunder clap is heard about 3 s after the lightning is seen. The source of both light and sound is:
A flea jumps straight up to a maximum height of 0.360m. How long is the flea in the air from the time it jumps to the time it hits the ground
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