4. A 5000 N space probe weighs 1580 N on planet X. Calculate the gravitational field strength of this planet

gravitationalforce=5000N

weight=1580N

Explanation:

weight=m×g

g=10m/s

1580=m×10

m=1580/10

m=158kg

gravitational field strengtg=force/mass

=5000\158

31.6N/kg

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.