Answer: Probably, harder the mineral it scratches. It makes more sense.
The Nile river is the longest river in the world, followed by the Amazon river which is the second longest.
… it is part of a super content called eouraisa
Eₖ = √1/2 mv²
Eₖ/v² = 1/2 m
2Eₖ/v² = m
mgh = 1/2 mv²
gh = 1/2 v²
2gh = v²
v = √2gh
= √2 × 10 N/kg × 2 m
= 6.324 ms⁻¹
m = 9.8/(6424)²
= 9.8/39.993
= 0.245 g
I am not sure if it's correct.
i transposed for m in the first equation then to find the velocity I combined the potential and kinetic energy equation. there was no mass because velocity doesn't depend on the mass
Then I used earth's gravitational field strength (g) 10 N/kg and the 2 m was the height provided in the question
you can try working and see if you get the same
She must wear a mask and gloves.
The mask would prevent her from inhaling pathogens that get transferred viraly, while latex gloves would prevent pathogens from entering through her skin, or if she later decides to put her fingers in her mouth or anything similar.
If she has a wound on her hands, the gloves will also prevent the blood from mixing with her own and prevent disease.
