There is a decrease in power. it can be concluded that there has also been a change in: a)current or voltage. b)resistance or ampers. c)velocity or current. d)work or time.

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied

Carbon 14 is a naturally occurring stable

Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?