How do you find the height to this question? An object with a mass of 1.80kg is on a tabletop that is 0.750m from the floor. The object is raised 1.20m from the tabletop and held there. What is the gravitational potential energy in relation to the tabletop?

You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 23.7n and the spring scale reads 13.8n. what is the magnitude of the force that earth exerts on the bag?

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions