Determine change in gravitational potential energy of system
A 0.44 kg pendulum bob is attached to a string 1.2 m long. What is the change in the gravitational potential energy of the system as the bob swings from point A to point B where θ = 39°?
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Drawing on Erastothenes' method, if two observers are due north and south of each other and are separated by 400 km, what is the circumference of their spherical world if they see the same star on their meridian at altitudes of 23 degrees and 47 d
It is then pulled down 6.80 and released. What is the time constant if the ball's amplitude has decreased to 3.90 after 57.0 oscillations?
Two boats start together and race across a 40-km-wide lake and back. Boat A goes across at 40 km/h and returns at 40 km/h. Boat B goes across at 20 km/h, and its crew, realizing how far behind it is getting, returns at 60 km/h. Turnaround times ar
One mole of an ideal gas does 3 500 J of work on its surroundings as it expands isothermally to a final pressure of 1.00 atm and volume of 22.0 L. Determine the initial volume of the gas.
How did Pavlov and Watson's focus on scientific inquiry of behaviors differ from the earlier viewpoints of structuralists, psychoanalysts, and functionalists?
What is the velocity of each ball after the elastic collision? What will be the maximum height of each ball after the elastic collision?
An insulated Thermos contains 116 cm3 of hot coffee at 73 °C. You put a 12.0 g ice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as
To complete your master's degree in physics, your advisor has you design a small, linear accelerator capable of emitting protons, each with a kinetic energy of 11.5 keV. (The mass of a single proton is 1.67 10-27 kg.) In addition, 1.00 109 protons
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