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Q1. A Carnot engine performs work at the rate of 420 kW while using 640 kcal of heat per second. If the temperature of the heat source is 550 °C, at what temperature is the waste heat exhausted?

Q2. A 2.0 mL syringe has an inner diameter of 4.0 mm, the needle inner diameter of 0.21 mm, and a plunger pad diameter (where you place your finger) of 1.20 cm. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. Suppose the liquid is an ideal fluid.

What is the minimum force the nurse needs to apply to syringe?

The nurse empties the syringe in 3.7 s. What is the flow speed of the medicine through needle?

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Category:- Physics
Reference No.:- M9160628

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