Question1
Imagine drawing two equipotentials in plane of the figure, one passing through point A and one passing through point B. If electric field is 250 N/C, how much does the potential change in going from A to B?
Question2
What is acceleration due to gravity g′ on the space shuttle in orbit - 200 km above the surface of the earth? The gravitational constant is 6.67 × 10^−11 N · m2/kg2, the radius of the Earth is 6.4 × 10^6 m and mass of the Earth is 6 × 10^24 kg.
Question3
A toy train is pushed forward and released at = 3.0 with a speed of 2.5. It rolls at a steady speed for 1.8, and then one wheel begins to stick. The train comes to a stop 6.0 from point at which it were released. What is the train's acceleration after its wheel begins to stick?