Tiffany leaves several balloons filled with helium gas inside her car on a sunny day. when she returns to her car, some of the balloons are much larger and a few have popped. explain what happened.

What type of nuclear decay causes the atomic number of an element to increase by 1?

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?

What is the measurement of how fast an object moves relative to a reference point?