A pivoted beam supports a load P at one end and a load Q at the other end. The weight of the beam can be ignored.

30 cm 70 cm

P Q

pivot

The beam is balanced.

Which row gives possible values for P and for Q?

P/N Q/N

A 21 7

B 21 9

C 30 10

D 30 70

Your answer is B

The fifth column gives the values for my compound expression¬P∧(P→Q). It is an “and” of ¬P(the third column) andP→Q(the fourth column). An “and” is true only if both parts of the “and” aretrue; otherwise, it is false. So I look at the third and fourth columns; if both are true (“T”), I putTin thefifth column, otherwise I put F. Q ¬P P→Q¬P ∧ T F F T

Sure hope this helps and pls mark me brainiest

the answer is b

explanation:

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right