Answer:
Explanation:
Given:
A = 589 J
D = 1 100 m
____________
F - ?
A = F·D
F = A / D = 589 / 1100 ≈ 0.54 N
They can travel in a vacuum.
» Only electromagnetic waves travel through vacuum. The other mechanical waves require a material medium to travel.
The aeroplane flew 4200 miles for 7 hours.
600 times 7 is 4200.