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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?
Introductory Mechanics: Calculate the smallest coefficient of static friction
What is modify in frequency ff - fi
A 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.36 m above the lowest part of the slide and the s..
Illustrate the role of the Sun's differential rotation in the formation of sunspots. Explain (briefly) the 22 year solar cycle, stating its essential features. Estimate the y-component of magnetic force.
A force vector has a magnitude of 569 newtons and points at an angle 41o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
The coefficient of static friction between the stone and each side of the tread channel is 0.7. While the tire surface is rotating at a maximum speed of 1 m/s, the stone flies out of the tread. The magnitude FN of the normal force that each side of t..
What would be the radius of curvature of the cornea
Elucidate the spacing between peaks
What will be the equilibrium temperature when a 223 g block of copper at 258 C is placed in the 178 g aluminium calorimeter cup containing 874 g of water at 13.2 C.
A small remote-control car with a mass of 1.60 kg moves at a constant speed of v = 14.0 m/s in a vertical circle inside the hollow metal cylinder that has the radius of 5.00 m.
A 1000 {rm kg} wrecking ball hangs from a 15 {rm m}-long cable. The ball is pulled back until cable makes an angle of 25.0^circle with the vertical. By how much has the gravitational potential energy of the ball changed .
A block of weight W can slide on a horizontal surface. A force of W/n1 is applied to the right that causes the block to accelerate with acceleration equal to g/n2. g is the acceleration by reason of gravity. If the coefficient of kinetic friction is ..
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