3. A runner has constant acceleration for 6.4 seconds over a 20 m distance starting from rest. What is the acceleration of the runner?
a.
b. If it takes the runner 6.4 s to run the 20 m distance, what is the runner's final velocity?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above

If element x has 99 protons how many electrons does it have