What is an electromagnetic wave?
O
A. Vibrating electric and magnetic fields
O
B. An electromagnet
O
C. Oscillating electric current
O
D. An induced electric current

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?