Alarge jet flying overhead is low enough so that a man on the ground can hear its engines. the man sees the jet before he hears the engines because a) his sight is stronger than his hearing. b) his hearing is stronger than his sight. c) the speed of light is faster than the speed of sound. d) the speed of sound is faster than the speed of light.

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules

What is the increase in density of a medium due to wave travel?