Sometimes on a sunny day campers start a campfire using a small mirror to light paper or dry grass. What shape of mirror would you use for this purpose? Explain your choice using reasoning.

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

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