You performed an experiment to find out how strong the net below a trapeze should be to safely catch a performer of mass 80 kg. which of the following is a new scientific question that can be investigated in the laboratory?

a. it is more exciting to watch a trapeze artist without a net?
b. how long can you use the net before it breaks?
c. is trapeze more or less exciting to watch than gymnastics?
d. should trapeze artists wear red or blue outfits?

    They tell you what the scientists are looking for in the experiment, "find out how strong the net below a trapeze should be". Using that you find out that the only question that questions the strength of the net is B.  

answer:   you might love summer weather, but you don’t want it to feel like the sun is inside your car. but a hot car that just won’t seem to cool down might be a bigger of a problem than you think. your car relies on being at the right temperature.

explanation:

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer