. A car is traveling at 30 m/s and about to impact on a wall. What change would result in the safest outcome for the passengers in the car?

A large time of impact with the wall

A small time of impact with the wall

A large stopping force with the wall

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed ⇒ as it changes into other forms of energy.

When does your body conduct current more readily?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final