05 2
.
Figure 4 shows a builder climbing a roof to replace
some tiles.
Figure 4
The weight of the builder and new roof tiles is 640 N.
Draw a diagram to calculate the components of the total weight parallel
and perpendicular to the slope of the roof.

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.

"i have always loved contemporary art and made it a general goal to work within the field. after a few nonprofit internships at museums and galleries, i decided to try the for-profit art world and was offered a job as the ad assistant at the magazine. i much prefer the pace of the for-profit art community and have stayed with the company for three years, with a promotion to an account manager last spring."

i just did this and got a 100.

magnets not strong enough

explanation: