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Question: A closed system of mass 10 kg undergoes a process during which there is energy transfer by work from the system of 0.147 kj/kg, an elevation decrease of 50 m, and an increase in velocity from 15 m/s to 30 m/s. The specific internal energy decreases by 5 kJ/kg and the acceleration due to gravity is constant at 9.7m/s2.
Part A: Determine the heat transfer for the process in kJ.
Please explain each step and equations used.
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. Calculate the buoyant force exerted by the water on the sphere
A small electric car overcomes a 244N friction force when traveling 29.6km/hr. The electric motor is powered by ten 12.0V batteries connected in series and is coupled directly to the wheels whose diameters are 49.0cm. The 281 armature coils are re..
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Find the magnitude and direction of the net electric field at point A. The two particles in the diagram each have a charge of +7.0 µC
A toy train rolls around a horizontal 1.3--diameter track. The coefficient of rolling friction is 0.12. What is the magnitude of the train's angular acceleration
In 0.584 s, a 11.6-kg block is pulled through a distance of 3.02 m on a frictionless horizontal surface, starting from rest. The block has a constant acceleration and is pulled by means of a horizontal spring that is attached to the block. The spring..
Pumped Energy Storage. A water reservoir has surface area A and depth D. The water flows down pipes and through turbines to generate electric power. The bottom of the reservoir is at height H above the turbines.
Calculate the absoute pressure at the bottom of a fresh-water lake at a depth of 28.9 m. Assume the density of the water is 1.00x10^3 kg/m^3 and the air above is at a pressure of 101.3 kPa
Two Automobiles traveling at right angles to each other collide and stick together. Car A has a mass of 1200 kg and had a speed of 25 m/s before the collision, What was the speed of car B before the collision
a jogger travels a route that has two parts. the first is a displacement of 2.80 km due south and the second involves a
A capacitor is connected across an ac generator whose frequency is 746 Hz, What is the magnitude of the maximum charge on one plate of the capacitor
A simple capacitor is made by placing two spheres of radii p at a distance d>>p apart. Find the capacitance of the system of two spheres
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