a stone is thrown horizontally at 8.0 m/s from a cliff 78.4m high. How far from the base of the cliff does the stone strike the ground?

Why is alternating current more effective at long–distance travel than direct current? a. the power lines are made out of conductors. b. transformers increase or decrease voltage as needed. c. the ac generator is more efficient. d. ac has lower voltage than dc.

What is magnetic flux? explain faraday's law of induction.

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx