Which example would most likely decrease friction? using cleats, rather than gym shoes, on a field using shaving cream, rather than shaving on dry skin using a wide parachute, rather than a narrow parachute, when skydiving using sandpaper, rather than regular paper, on wood

The answer is: using shaving cream, rather than shaving on dry skin.

Friction is the force resisting the relative motion of solid surfaces, fluid layers and material elements sliding against each other.

Shaving would be much easer using shaving cream, because friction is decreased.

This is example of decreasing skin friction.

Skin friction is the force resisting the motion of a fluid across the surface of a body.

Other examples cause increase of friction.

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o