7) a proton is moving in a circular orbit o radius 14 cm in a uniformo.35-t hagnetic field perpendicular to the velocity of the proton. (a) find the linear speed of the proton. (b) what if an electron, rather than a proton, moves in a direction perpendicular to the same magnetic field with this same linear speed? will the radius of its orbit be different?

In what direction does the medium move relative to the direction of the wave? explain.

The consumption of fossil fuels could be

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f