It is a very reactive metal with 11 protons ,12 neutrons, 11 electrons, and 1 valence electron
Answer:
F = 150 N
Explanation:
Torque being applied by parent
= F x r
where F is force applied tangentially and r is point of application of force from axis of rotation ( center )
given torque = 240 Nm
r = 1.6 m
F x r = 240
F x 1.6 = 240
F = 150 N
So a force of 150 N is applied by the parent to achieve the given torque.
This force will also be applied by the merry - go- around on the parent as reaction force according to Newton's third law. The parent will not be pushed back by this force because he is standing on a rough surface . Friction of surface will help him remain stationary on the ground.
Hold on I’m working on it Rn
Answer:
λ = c / f or f = c / λ
f = 3.0E8 / 4.0E-7 = .75E15 / sec = 7.5E14 / sec = 7.5 X 10^14 /sec
