The scientific method often begins by asking questions about the natural world. Which of the following is an example of a scientific question?

How does fertilizer affect plant growth?
What’s the best species of fish?
Which color is best for wall paint?
Who is the fastest person on the planet?

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?