2. Masses mi = 1 kg and m2 = 3kg are formed by a light string which passes over a frictionless pulley below. If the masses are allowed to fall freely, what is the acceleration of the system and the tension in the strings?
G
m2
mi​

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they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)

resonant frequency