Speed = distance/time
= 400/72
=5.55 m/s
Impulse is (force) x (time).
That's the <em>last choice</em> on the list. It could be 'D', or '4', or 'Δ', or 'ד' etc.
If you play with it for a while, you discover that impulse has the same units as momentum, which certainly gives you something to think about.
The answer is “Impulse acting on it” according to the impulse-momentum theorem.
The pressure at a certain depth underwater is:
P = ρgh
P = pressure, ρ = sea water density, g = gravitational acceleration near Earth, h = depth
The pressure exerted on the submarine window is:
P = F/A
P = pressure, F = force, A = area
The area of the circular submarine window is:
A = π(d/2)²
A = area, d = diameter
Set the expressions for the pressure equal to each other:
F/A = ρgh
Substitute A:
F/(π(d/2)²) = ρgh
Isolate h:
h = F/(ρgπ(d/2)²)
Given values:
F = 1.1×10⁶N
ρ = 1030kg/m³ (pulled from a Google search)
g = 9.81m/s²
d = 30×10⁻²m
Plug in and solve for h:
h = 1.1×10⁶/(1030(9.81)π(30×10⁻²/2)²)
h = 1540m
Answer:
0.1g to 0.0000001g hope it helps uu
