Physics

ans c

A

15

5

friction works WITH gravity

ans is 2

3

this is easy bro

B

a

ans is 4

Ans 200

a

Only B

30

basically flow rate from both taps is different

only b

ad

keep in mind that the top one has 2 interface changes, the bottom only has 1

its a fucking yoyo so it goes down and then comes up

so D

a

a,c

a, d

a,c

1

b

b

ans is 2

6.75

ans is 0.08 to 0.09

20, 10

2