Answer:
13.6565mm of Hg
Explanation:
We only need to use the from Hagen poiseuille equation to be able to find the pressure change. That is
Once the equation is defined, we clear based on the pressure and replace
Finally we have,
The final answer is B hope its helps
initial speed of the stuntman is given as
angle of inclination is given as
now the components of the velocity is given as
here it is given that the ramp on the far side of the canyon is 25 m lower than the ramp from which she will leave.
So the displacement in vertical direction is given as
by solving above equation we have
Now in the above interval of time the horizontal distance moved by it is given by
since the canyon width is 77 m which is less than the horizontal distance covered by the stuntman so here we can say that stuntman will cross the canyon.
The answer is -15.625m/s².
Acceleration is the change in velocity over a period of time. It can be computed using the formula:
Where:
vf = final velocity
vi = initial velocity
t = time
Now let's see what was given in your problem:
The car was moving at 25m/s and then came to a stop. So initially it was moving and then it stopped. This means the final velocity will be 0m/s because it stopped moving.
But look at the problem, it shows no time. We need to solve for time from the time it moved till it reached the red light 20 m away.
Time can be computed using the kinematics formula:
We just derive the formula from the equation by filling out what we know first.
The time it took from the point it was moving till it stopped is 1.6s. We can now use this in our acceleration formula.
Notice that the acceleration is negative. This means that the car decelerated or slowed down.
I think it would be A: gold ring
if you were to place all of these on a bed of water, the ring would be the first to sink.