Answer:
Explanation:
A )
When empty , H₀ length of barge is inside water .
volume of barge inside water = A x H₀
Weight of displaced water = AH₀ x ρ x g
Buoyant force = weight of displaced water = AH₀ ρg
B)
It should balance the weight of barge
Weight = buoyant force
Weight = AH₀ ρg
mass of barge = weight / g
weight / g = AH₀ ρ
= 550 x .55 x 1000
= 302500 kg
Answer:
i₀ = V / R_i
Explanation:
For this exercise we use Ohm's law
V = i R
i = V / R
the equivalent resistance for
= ∑ 
if all the bulbs have the same resistance, there are N bulbs
R_{eq} = R_i / N
we substitute
i = N V / Ri
where i is the total current that passes through the parallel, the current in a branch is
i₀ = i / N
i₀ = V / R_i
Explanation:
Impulse = change in momentum
FΔt = Δp
(53 N) (15 s) = Δp
Δp = 795 kg m/s
For constant mass:
Δp = m Δv
795 kg m/s = (12 kg) Δv
Δv = 66.25 m/s
Rounding to two significant figures, Δp = 800 kg m/s and Δv = 66 m/s.
The correct answer for this question would be D) Global warming or the fourth option.
