Read the following selection from the article. As life expands into its environment, it uses up sources of energy and matter. It also expels waste products, and these environmental changes lead to more evolution. Explorers should watch for this cyclical process. What does the word "cyclical" in the selection tell the reader? А The process is easy to control. B The process is always expanding. с The process requires a lot of energy The process repeats again and again. th​

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.

The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)

Match each scenario to the form of energy it represents