Sound waves travel fastest through
a) air.
b) steel.
c) water.
d) a vacuum.

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.