A175 g ball containing 4.20×10^8 excess electrons is dropped into a 120 m vertical shaft. at the bottom of the shaft, the ball suddenly enters a uniform horizontal 0.200 t magnetic field directed from east to west. part a: if air resistance is negligibly small, find the magnitude of the force that this magnetic field exerts on the ball just as it enters the field.
part b: if air resistance is negligibly small, find the direction of the force that this magnetic field exerts on the ball just as it enters the field. (north, east, south, west)

Find the volume of the ellipsoid x^2+y^2+5z^2=36.

How would doubling the made of an object change the objects potential energy

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?