Explanation:
Given that,
Mass of the hamster, m = 0.139 kg
Diameter of the wheel, d = 20.8 cm
Radius, r = 10.4 m
Frequency of the wheel, f = 1 Hz
Time, t = 0.823 s
(a) There exist a relationship between the tangential and angular acceleration of the wheel. It is given by :

Since, 




(b) In radial direction, applying the second law of motion as :

a is the radial acceleration, 








Hence, this is the required solution.
A telescope in space can focus on any object while a telescope on the ground cannot focus on the object it is on
Answer:
Step by step explanation: