Read the excerpt from the hot zone.

"there she met lieutenant colonel trotter, a stocky, dark-haired man whom nancy had worked with for many years. they put on their inner gloves and taped their cuffs. nancy put a pair of hearing protectors over her ears. she had started wearing them a while back, when people had begun to suspect that the roar of air in your suit might be loud enough to damage your hearing. they hauled on their space suits and sealed the ziploc zippers. they edged around each other as they fiddled with their suits. people wearing biohazard space suits tend to step around one another like two wrestlers at the beginning of a match, watching the other person's every move, especially watching the hands to make sure they don't hold a sharp object. this cringing becomes instinctive."

which best states the central idea of this excerpt?

(a) extreme precautions must be taken when dealing with potentially hazardous materials.

(b) it is always necessary to work with a partner when dealing with unidentified substances.

(c) scientists are well known for being overly cautious and for taking unnecessary safety measures.

(d) it is standard procedure to wear both space suits and hearing protectors in laboratories.

when i skim a text i look for anything i'm trying to find, like keys or clues or i just want to see if it is interesting to me.

explanation:

in 1636, roger williams settled at the tip of narragansett bay after being banished from the massachusetts bay colony for his religious views, on land granted to him by the narragansett tribe. he called the site "providence plantation" and declared it a place of religious freedom.

explanation:

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

may i see the historical information and the excerpt?