When a new 9.0 v battery is connect to a torch, the power emitted by the bulb is 6.0 w. after the battery has run-down somewhat, the internal resistance of the run- down battery is 7.4 ω, what is the power emitted by the bulb now? (you should assume that the resistance of the bulb is independent of the current flowing through it.)

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

If a star is moving toward earth, it is

Apropagating wave in space with electric and magnetic components. these components oscillate at right angles to each other. it may travel in a vacuum. determine the term.