Answer:
It will take 20,000 seconds to get a pressure of 200Pa at the bottom of the tank.
Explanation:
The pressure at the bottom of the tank will be
where 
is the mass of the water, and 
is the base area of the tank.
The base area of the tank is
,
and if we want the pressure at the bottom to be 200pa, then it must be that
,
solving for we get:
which is the required mass of the water in the tank.
Now, the tank fills at a rate of 2 drops per second or
since each drop weights 0.05g.
Therefore, the time 
it takes to collect 20kg of water will be
which is 55.56 hours or 2 days and 7.56 hours.
Thus, it will take 20,000 seconds to get a pressure of 200Pa at the bottom of the tank.
A.0.6 hope you do good on your test!!
we Know that gravitational field strength(g) at a point on a planet is equal to gravitational force exerted per unit mass placed at that point.
It Means,
g=F/m
Here,
g=gravitational field strength
F=Gravitational force
m=Mass
Case A
planet force =10 and mass= .5
g1=F/m
g1=10/.5
=100/5
g1=20m/s
case B
F=30 and m=2
therefore g2=30/2
g2=15m/s^2
case C
F=45 and m=3
g3=45/3
=15m/s^2
case D
g4=60/6
g4=10m/s^2
from above results it is clear that the gravitational field strength of planet D is minimum which is 10m/s^2 and gravitational field strength of planet A is maximum which is 20m/s^2
This is a perfect problem to use positive and negative velocities.
Let's call the positive direction the direction that points UP.
Then the negative direction is the one that points down.
The acceleration of gravity on Earth is 9.8 m/s² down. That means
that any object with no forces on it except gravity gains 9.8 m/s of
speed downward every second.
OK. Ready to go to work:
The ball's initial velocity is +(up)20.0 m/s .
Every second after the toss, the ball has -(down)9.8 m/s more velocity.
The ball's velocity after 3 seconds is
+20 + 3(-9.8) =
20 - 29.4 = - 9.4 m/s .
That means it's velocity at that time is 9.4 m/s pointing down.
Answer:
hey I know the answer for this
Explanation:
it will be reduce the speed of A
the answer is 7.
this is the exact answer.
if you don't like this answer means pls comment me
