In a question about a spacecraft in orbit, a student writes: “The gravitational pull of the Earth is balanced by the centripetal force of the space craft
and so it stays in orbit."

Explain why this statement and is incorrect and write a corrected version​

Which statement best describes resistance? resistance is a. how well a current will flow in a material and is measured in volts. b. how well a material conducts an electrical charge and is measured in ohms. c. the ability of a material to attract a positive charge to create a current. d. the ability of a material to repel neutral charges and is measured in ohms.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below. your friend goes first, and you follow after he has dropped a distance of 2.0m. when your friend hits the water, is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.