Answer:
The Convex Mirror is used.
Explanation:
The astronaut's mass doesn't change. It's the same wherever he goes,
because it doesn't depend on what else is around him.
His weight depends on what else is near him, so it changes, depending
on where he is.
Weight = (mass) x (gravity)
On Earth, Weight = (145 kg) x (9.81 m/s²) = 1,422.5 newtons.
(about 320 pounds)
On the moon, Weight = (145 kg) x (1.62 m/s²) = 234.9 newtons.
(about 53 pounds)
A matchstick has a lot of chemical energy stored in it. When the match is struck, it burns and the chemical energy in it produces heat energy and light energy.
They both Move energy through a Field without Moving A Substance
