200kg Water Moved in 1min by 600W Pump

  • Thread starter Thread starter looi76
  • Start date Start date
  • Tags Tags
    Mass
AI Thread Summary
A 600W pump raises water from a lake to a height of 3.0m and delivers it at a velocity of 6.0 m/s. The calculation for the mass of water moved in one minute reveals that 200kg is the correct answer. It's important to note that 600W cannot be directly substituted for kinetic energy, as energy is measured in joules. Instead, the power equation P=F*V_avg should be utilized for accurate calculations. This highlights the significance of using appropriate units and formulas in physics problems.
looi76
Messages
80
Reaction score
0

Homework Statement


A pump with a power output of 600W raises water from a lake through a height of 3.0m and delivers it with a velocity of 6.0 ms^-1. what mass of water is removed from the lake in one minute?

Homework Equations


Kinetic Energy = 1/2*m*v²

The Attempt at a Solution


600 = 1/2*M*6.0²
M = 200kg
 
Physics news on Phys.org
You can't substitute 600W for the kinetic energy, because energy is measured in joules, not watts. Try and use P=F*V_{ave}.
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »

Similar threads

Energy of a water tank with compressed air
Replies
5
Views
1K
Calculating Pump Power for Well Water Removal
Replies
5
Views
2K
Pumping water upwards in a column
Replies
8
Views
2K
Oscillation of free surface of water in parallelepiped container
Replies
13
Views
2K
Submarine Buoyancy Differential Equation
Replies
3
Views
3K
How Much Air Does a 600W Hair Dryer Circulate Per Second?
Replies
6
Views
6K
What is the kinetic energy of the center of mass
Replies
3
Views
4K
Rate of conversion of P.E. to heat for a waterfall
Replies
12
Views
2K
Potential Energy and raising a satellite from Earth into a Circular Orbit
Replies
5
Views
2K
Calculating Pump Power and Fountain Height from Water Ejection Speed
Replies
20
Views
4K

Hot Threads

Recent Insights

Back
Top