Explanation:
Since I can only do this by observation, the elevation of F is approximately 850km and the elevation of B is 925km.
Answer:2.5 m/s
37.5KJ
Explanation:
Let
be the initial velocity of rail road car ,coupled cars & Final velocity of system respectively.

Conserving momentum



Therefore Final velocity of system is 2.5m/s
(b)Mechanical Energy lost =Initial Kinetic Energy -Final Kinetic Energy



Molecules in the air scatter blue<span> light from the sun more than they scatter red light.</span>
Answer:
the answers are 1 2 and 5!