Marissa is standing on a at the edge of a canyon. she yells loudly and hears an echo 1.6 s later. how far away is the other side of the canyon? you may assume the speed of sound is 340 m/s.

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? your

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?