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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?
A 48.9 kg girl is standing on a 129 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. What is the velocity of the plank relative to the ice surface
Your roommate is working on his bicycle and has the bike upside down. He spins the 56.0cm -diameter wheel, What is the pebble's acceleration
80 pF capacitor and a 320 pF capacitor are both charged to 2.8 kV. They are then disconnected from the voltage source and are connected together, Find the resulting potential difference across each capacitor
A 220, 45.0-cm-diameter turntable rotates on frictionless bearings at 55. A 21.0 block sits at the center of the turntable. A compressed spring shoots block radically outward along a frictionless groove in the surface of the turntable.
Assume that the masses of the chains, pulleys, and ropes are negligible and the crate is rising with an acceleration of 2.6 m/s2. Identify the force.
Light is incident on a thin prism for which n= 1.5. Find the angle of deviation for the emerging beam
Investigators are researching the appearance of a strange movement of objects in what the local community considers a haunted house. how strong was the magnetic field that produced this EMF
A prehistoic bug (m=0.02kg) has escaped into the moder world. how fast (and in what direction) is the ubg traveling after the collision
Illustrates a FBD of the person
In an amusement park water slide, people slide down an essentially frictionless tube. Does the mass of the person make any difference
Compressed air in a car lift applies a force to a piston with radius 5.00 cm. What pressure produces the lift
A high-performance sports car can go from 0 to 100 mph in 7.8 s. (Assume the car travels in the positive direction. What is the car's average acceleration
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