Saturday
May 25, 2013

Posts by Derek

Total # Posts: 227

physics
An object of mass m=2kg travels up an incline to a vertical height of 3m. What is the work done on the object by gravity?

physics
Will the work done by friction on an object that moves through a positive displacement be positive of negative??? negative

physics
An object of mass m=2kg travels up an incline to a vertical height of 3m. What is the work done on the object by gravity?

Physics
0.17 kg point mass moving on a frictionless horizontal surface is attached to a rubber band whose other end is fixed at point P. The rubber band exerts a force F = bx toward P, where x is the length of the rubber band and b is an unknown constant. The mass moves along the dot...

AP Chem
Pretend you are a nuclear scientist and try to answer this bonus question. Uranium -235 (235U) is used as a fuel in nuclear power plants. However, natural uranium contains mostly U -238 (238U) and very little uranium -235. Therefore, it is necessary that the natural uranium be...

can someone please help me! my test is on tuesday on this stuff and this is the one question that I am confused about!

Pretend you are a nuclear scientist and try to answer this bonus question. Uranium -235 (235U) is used as a fuel in nuclear power plants. However, natural uranium contains mostly U -238 (238U) and very little uranium -235. Therefore, it is necessary that the natural uranium be...

physics
What was the initial kinetic energy of the small mass before the collision? What is the kinetic energy of the two-mass combination after the collision?

physics
A 1600 kg car travels at a speed of 10.5 m/s. What is its kinetic energy? Assume that air resistance is negligible.

physics
can some one help me with coming with a better way to word theses annswers. As the angle increases, what happens to the tension in the string? *the the tension in the string will get tighter or larger for t1 What would you have to do to the angle to make the tension in the st...

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