Calculate the effective value of g, the acceleration of gravity, at 4,348 km above the earth’s surface

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

Explain why electric current cannot exist if a current doesn't have a voltage source.