When the earth is closest to the sun it is said to be in perihelion position.
Answer:
a).
b).
rpm
c).v=0.5865 m/sec.
Explanation:
Given:


a).


The angular speed in radians per seconds is

b).

rpm
c)
Child's distance per revolution
(pi*2r) = 43.988 metres.
v=(43.988 x 0.0133333) = 0.5865 m/sec.
The specific heat capacity of brass would be ranked between 0 and infinity