All objects on Earth are subject to the force of gravity. Which of the following best describes the law of gravity? Since Earth is a sphere, it keeps objects on its surface.

Any two objects with mass will be attracted to one another.

Energy from space causes objects on Earth to remain at the surface.

Earth’s atmosphere is so dense that objects are kept at the surface of Earth.

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt