A25.0 steel wire and a 50.0 copper wire are attached end to end and stretched to a tension of 145 . both wires have a radius of 0.450 . and their densities are 7.86 10 / for the steel and 8.92 10 / for the copper. (note that these are mass densities, mass per unit volume, not linear mass densities, mass per unit length.) how long does a wave take to travel from one end to the other of the combination wire?

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong

What kind of simple machine is a catapult?

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation 2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!