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Q1. Over a 30-day period a power plant generates an average of 751 MW of electrical power and 1225 MW of waste heat, and burns 1.83×108 kg of coal. Imagine that it takes 2.30 kg of oxygen to burn 1.00 kg of coal. (The actual amount varies with the type of the coal). What is the total mass of the reagents used in the combustion throughout the 30 days?
Q2. A spring with spring constant 14 hangs from the ceiling. A ball is attached to the spring and authorized to come to rest. It is then pulled down 3.0 and free. The ball makes 17 oscillations in 16 seconds. What is it the mass of the ball?
What mass of stone is necessary if the temperature is not to drop below 18.5°C overnight. Sunlight shining in during the daytime is absorbed by the floor, interior walls, and objects in the room, raising their temperature to 37.5°C.
What is an angular speed of the small cylinders, which is between two inner and outer cylinders
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How much energy is given to the cell during this pulse. How many years would it take the earth to move 1.0 mm at this speed.
Problem on elevator
If the magnetic field strength is 0.845 T, what is magnitude and direction of the magnetic force on the wire between the poles
A 12 kg mass starts from rest and slides down an inclined plane 8.0 10-1 m long in 0.9 s. What net force is acting on the mass along the incline?
Assuming the diver has inhaled a negligible amount of air from the tank, what is the temperature of the ocean water.
A puddle holds 150 grams of water. If .50 grams of water evaporates from the surface, what is the approx temperature altering of the remaining water.
What is work done by the non-conservative force
How far will it travel before becoming airborne
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