Question

Pleazzzzz solve these questions

Answer 1

30x4 + 20x1= 120+ 20 =140 Nm clockwise

80x3+ 50x5= 240+250= 490Nm anti-clockwise

490-140= 350 Nm anti clockwise

Q2)

b) 42 degrees

c) concave lens

d) real depth/apparent depth

    15/ 3.75

=4

hope that helps

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