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Estimate the flow rate of water (in m3 per sec) needed for a 1 GigaWatt hydroelectric power plant.
Consider a heat engine that operates between thermal reservoirs at 450 K and 232 K. Suppose the engine does 4500 J of work while it expels 90 J of energy to the cold reservoir. Is this engine possible in the real world
a diving bell in the shape of a cylinder with height 2.5m is closed at upper end and open at the bottom. its lowered
An uncharged nonconductive hollow sphere of radius 19 centimeter surrounds a 16.0 µC charge placed at the origin of a Cartesian coordinate system. Determine the electric flux through the hole
A freezer is used to freeze 3.0 Lof water completely into ice. The water and the freezer remain at aconstant temperature of T = 0°C. Determine the change in the entropy of the water
Two capacitors are connected parallel to each other and connected to the battery with voltage 25V. By how much energy of the system decreases
Suppose an object is set sliding, with a speed less than escape velocity, on an infinite frictionless plane in contact with the surface of the Earth. Describe its motion.
Two plates of 10 mm thickness each are to be joined by means of a single riveted double strap butt joint. Determine the rivet diameter, rivet pitch, strap thickness and efficiency of the joint.
A tall, slender drinking glass with a thin base is initially empty. Where is the center of mass of the glass
A soccer player kicks the ball from ground level with an initial velocity of 21 m/s at 35 degrees above horizontal. What is the direction of the ball's velocity when it reaches the goal 30m (horizontal) away
you throw a rock with an initial horizontal velocity and it hits the ground at x meters away from your feet. what if a
A microphone is moving in air towards a stationary source of sound. The detected frequency is 106 Hz greater than the emitted frequency. What is the speed of sound in the unkown liquid
A bus accelerates at 1.6 m/s2 from rest for 10 s. It then travels at constant speed for 23 s, What is the total distance the bus travels
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