Under the right conditions, it is possible, due to surface tension, to have metal objects float on water. (See the Video.) Consider placing a short length of a small diameter steel rod on a surface of water. What is the maximum diameter, that the rod can have before it will sink

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?