Two forces Fa and Fb are applied to an object whose mass is 8.0 kg. The larger force is Fa. When both forces point due east, the object’s acceleration has a magnitude of 0.5 m/s2. However, when Fa points due east and Fb points due west, the acceleration is 0.4 m/s2, due east. Find (a) the magnitude of Fa and (b) the magnitude of Fb.

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.

In a classical model of the hydrogen atom, the electron moves around the proton in a circular orbit of radius 0.053 nm. what is the electron's orbital frequency? what is the effective current of the electron?