An electron is launched with velocity v in a uniform magnetic field b. the angle θ between v and b is between 0 and 90°. as a result, the electron follows a helical path. the pitch of the helix is defined as: a) the angle the helix makes with the magnetic field. b) the angle the helix makes with the electron's velocity vector. c) the radius of the circular motion. d) the distance between adjacent turns of the helix. e) the time it takes the electron to move from one turn on the helix to the next. explain !

The chart shows the costs and shipping times for materials that a company needs to build a new product. which describes the best trade-off if the company needs to start building their product within the next two years? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.