A1.0 kg mass attached to a spring is pulled back horizontally across a table so that the potential energy of the system is increased from zero to 190 j. ignoring friction, what is the kinetic energy of the system after the mass is released and has moved to a point where the potential energy has decreased to 55 j?
incorrect: your answer is incorrect. j

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.

What is the role of lenses in microscopy?