15 POINTS
Identify the scenarios below as to whether they would increase, decrease, or not change the frequency in which a string vibrates and thus change its pitch. Assume that no other changes are happening.

1)Tightening a string for greater tension
2)Replacing a thin string with a thick string
3)Increasing the effective length of the string

i dont know but

explanation:

whoever your teacher is, deserves a raise for using pokemon as an example

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =