Solving Your Homework Problems: Using Equations to Calculate Pressure

AI Thread Summary
To calculate pressure, the relevant equation is pressure equals force divided by area (P = F/A). The standard SI units for pressure are indeed pascals (Pa), which can be expressed as kg·m^-1·s^-2. The discussion emphasizes the importance of clearly stating the specific homework problem to receive effective assistance. Additionally, participants encourage attempting to solve the problem independently before seeking help. Providing more context will facilitate better guidance in solving homework problems related to pressure calculations.
JamesBwoii
Messages
71
Reaction score
0

Homework Statement


Is there an equation which I can use to calculate this?


Homework Equations





The Attempt at a Solution


I think the SI units for pressure are kgm^-1s^-2 but that's all I know. I have tried to put numbers into that to get an answer but I can't get it to work.

Thanks.
 
Physics news on Phys.org


You have not stated the problem. Furthermore, we cannot help you unless you first try to solve it yourself.
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

How to calculate the velocity of water streaming into the boat?
Replies
19
Views
983
Clarifying the Definition Total/Stagnation Pressure (p₀) in Bernoulli'
Replies
2
Views
949
What's the pressure long before the fluid exits a pipe?
Replies
13
Views
1K
Fluid Dynamics - Using the Manometer Equation
Replies
6
Views
2K
Solving Fluid Statics Problem: Accounting for Atmospheric Pressure
Replies
9
Views
2K
What is the solution to the circular duct problem?
Replies
3
Views
2K
How Do You Calculate Work When Compressing Gas?
Replies
1
Views
2K
Time taken for pressure equalization between two tanks
Replies
3
Views
4K
The time for pressure to build up
Replies
4
Views
1K
Calculate Temperature of Nitrogen Gas at 2 atm Pressure
Replies
7
Views
1K

Hot Threads

Recent Insights

Back
Top