Gertrude writes a short story in which the main character must enter a nuclear-powered spaceship’s engine room that has lost its shielding in order to prevent the engine from flooding the rest of the ship with radiation. The main character is not wearing protective gear. What effects are best for Gertrude to consider when planning what may happen to the character? non-stochastic effects such as possible DNA mutations later in life resulting from the short-term, high-level exposure non-stochastic effects such as severe burns and radiation sickness resulting from the short-term, high-level exposure stochastic effects such as possible DNA mutations that are unlikely to occur from the single, low-level exposure stochastic effects such as severe burns and radiation sickness resulting from the long-term, low-level exposure

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

No bc a lot of things r still theories n unproven

It really doesn't matter for any of the questions that you've listed.