1. how do machines make work easier?
2. how do you calculate work (what is the formula for work? )

3. what is the formula for mechanical advantage?

4. how does friction impact work?
5. what is the relationship between kinetic and potential energy? 6. how do you calculate kinetic energy (what is the formula)
7. a 700-kg vehicle is traveling at a speed of 6 m/s. how much kinetic energy does it have?
8. two rocks of different masses are rolling down a hill at the same speed. which rock (small one or big one) would have more kinetic energy?

Which of the following is the main purpose of a human community?

4.06 hc)a five-year review of threats to the southern resident orca population of the united states concluded that the top threats were prey availability, contaminants, and effects from recreational and whale watching vessels. further down the list are oil spills, disease, and effects from commercial vessels not targeting whales. how might this list be different if it were for transient whale populations, which have a larger average population size and live farther offshore in open waters? a)the transient population is more likely to be affected by contaminants. b)the transient population is less likely to be affected by whale watching vessels. c)the transient population is more likely to be affected by disease. d)the transient population is less likely to be affected by prey availability.

Diabetes is often suspected when glucose shows up in urine tests. use the model to explain how glucose could be present in urine. why do you think this symptom is especially concerning for young people?