A lever has a total length of 12 meters with a fulcrum at the exact center of the lever. Which best describes how to double the mechanical advantage of the lever? Move the fulcrum 2 meters away from the side on which the force is applied. Move the fulcrum 2 meters toward the side on which the force is applied. Move the fulcrum 4 meters away from the side on which the force is applied. Move the fulcrum 4 meters toward the side on which the force is applied.

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?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

Which describes increasing the efficiency of energy resource