Which of the following instruments measures time most accurately? a. Sundial
b. quartz watch
c. pendulum clock
d. watch with balance wheel

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.