60 POINTS What are characteristics that a product developed by technological design must have in order to be considered a success? Check all that apply.

- It must be available for free.
- It must be time and cost effective.
- It must be durable while working.
- It must pose new problems to be solved.
- It must solve the problem for which it was developed.
- It must solve problems for which it was not originally intended.

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 ?

What is a good example of instantaneous speed

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.