Hiro does not see a puddle of liquid on the lab table and accidentally touches the liquid. what should hiro do next?
a)he should tell his teacher about the spill and clean it up with paper towels.
b)he should tell his teacher about the spill and rinse his hand in the sink.
c)he should tell the other students and clean up the spill with paper towels.
d)he should tell the other students and rinse his hand in the sink.

Option (B) is the correct answer.

Explanation:

It is advised that while conducting an experiment in a laboratory, always perform it under the supervision of your teacher.

When Hiro accidentally touches the liquid then he should immediately tell his teacher about it so that timely precaution can be taken to avoid any damage or side effect. Also, Hiro should rinse his hand in the sink because it will neutralize or decrease the effect of spilled liquid on his skin.

Thus, we can conclude that he should tell his teacher about the spill and rinse his hand in the sink.

B) He should tell his teacher about the spill and rinse his hand in the sink.

Explanation:

While performing an experiment or attending a lesson in a laboratory special safety norms needs to be followed by students as well as by the teachers. It is advice that experiments in the laboratory should be performed under the supervision of the teacher or lab staff who could take initiatives during chemical and fire hazards.

According to the given situation, B) He should tell his teacher about the spill and rinse his hand in the sink. is the correct option because of the fact that the unknown liquid could be strong acid or base or any other harmful chemical which either sooner or later can produce a burning sensation or itching. Teacher should be informed first instead of fellow students because teacher could give direction if any injury is likely to happen.

scientific laws are the result of testing theories and proving them to be facts.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia