2 seconds is the period (time it takes to complete one cycle)
Manipulating the arrangement of DNA that makes up a gene is called genetic engineering.
Answer:
(a). The value of angular speed of the merry-go-round
= - 5.82 ×

(b). The linear speed of the girl after the rock is thrown V = -1.89 ×

Explanation:
Given data
Mass of the girl
= 50.6 kg
Mass of merry-go-round
= 827 kg
Radius r = 3.72 m
The speed of the rock relative to the ground
= 7.82 
(a). The angular speed of the merry-go-round is given by
![\omega = - [\frac{m_{r}v_{r} }{r} ] \frac{2}{m_{m} + 2m_{g} }](https://tex.z-dn.net/?f=%5Comega%20%3D%20-%20%5B%5Cfrac%7Bm_%7Br%7Dv_%7Br%7D%20%20%7D%7Br%7D%20%5D%20%5Cfrac%7B2%7D%7Bm_%7Bm%7D%20%2B%202m_%7Bg%7D%20%7D)
Put all the values in above formula

= - 5.82 ×

This is the value of angular speed of the merry-go-round.
(b). The liner speed of the girl is given by
⇒ V = r × 
⇒ V = - 3.72 × 5.82 × 
⇒ V = -1.89 ×

This is the linear speed of the girl after the rock is thrown.
Answer:
time is 3333.33 min or 55.55 hr
Explanation:
given data
reactor operating = 1 MW
negative reactivity = $5
power = 1 miliwatt
to find out
how long does it take
solution
we know here power coefficient that is
power coefficient = 
power coefficient = 1
so time required to reach power is
power = reactivity × time / power coefficient + reactor operating
1 ×
= -5 t / 1 + 1 × 
5t =
- 
t = 199999.99 sec
so time is 3333.33 min or 55.55 hr