Plz hurry it's !
according to newton's second law of motion, how much force must be applied to a 0.145 kg baseball for it to travel at 38 m/s²?

a. f = ma-mg; therefore, it would take 4.0n of force.

b. f = ma; therefore, it would take 5.5 n of force.

c. f = mg; therefore, it would take 1.42 n of force.

d. f = mv; therefore, it would take 5.5 n of force.

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water