Answer:
= 40 cm
Explanation:
given data
string length = 30 cm
solution
we take here equation of length that is
L =
...............1
so
total length will be here


so
will be

= 40 cm
You look up the element in the periodic table. Subtract the atomic number (small number) from the mass number (big number). The answer is the number of neutrons.
Answer:12.5 W
Explanation:
work = force * distance
175 J = 25N * d
d = 7 meters ◄
power = work / time
P = 175J / 14s = 12.5 W ◄