Answer:
0.25m²
Explanation:
We know that the summation of forces in the vertical direction is zero
So
PA-mg=0
A=mg/p
So
Substituting
A= 75* 9.8/3*10^-3
=0.25m² which is the total shoe area
The answer is 20 meters would be the water depth started to feel bottom. This is half of the wavelength. The reason behind this is the wave travels half or the partial of the wavelength underneath the surface. For that reason that is where the wave would be starting to feel the ground.
Answer:
After 3 hours.
Explanation:
This is a encounter problem.
We start by writing the position equation of both objects.
We assume that acceleration is equal to zero in both boats ⇒ They move with constant speed
We put the origin of coordinates in the harbour so after 6 hours the first boat travels
The first boat will be 42 mi far from the harbour.
The position equation for a motion with acceleration equal to zero is :
Where is initial position
v is the speed
t is time and is initial time
Then is time variation
For the first boat :
Because we set
For the second one :
In the encounter : x1(t) = x2(t) ⇒
So after 3 hours they have the same position relative to the harbour
We can check by replacing the value t = 3h in both position equations
For x1(t) :
For x2(t) :
Its A; The marginal benefit of completing the project outweighs the marginal cost of the project.
Answer
the one resister will change because how fast the curcit is going because th rate will change f
Explanation: