As the tides slide across Earth, they exert a friction force that opposes Earth's rotation. Because of this, the time required for one Earth rotation increases by 0.0016 s every 100 years. a) Assuming that Earth is a uniform solid sphere, what is the magnitude of the torque the tides exert on Earth

Which type of wave can travel without a medium

What is the most useful equation for electric power?

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve