Find the odd one out a)planets moving on it's axis, strings of guitar (being played),motion of a ferry wheel, the vehicles moving on a straight road. b)motion of the moon around the earth, motion of the earth around the sun, motion of a merry-go-round, heart-beat in a healthy person. c)motion of a bullet fired from gun, motion of a football player in the ground, motion of a vehicle on a straight road, motion of an apple falling from a tree

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

i'm on my way to history not a mistory.

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.