It can be observed without changing the identity of the object.
Answer:
6480 km
Explanation:
The speed of the object is
v = 7500 cm/sec
We need to convert centimetres into kilometers and seconds into days. We have:


Using these conversion factors, we find:

B. Transverse Wave this is the correct answer
Explanation:
The triple beam balance is used to measure masses very precisely; the reading error is 0.05g