Recent content by macmac410

3.) the source of error in here is the ice that you put on the warm water. you need to put an ice that is free from water(i mean an ice that is not on going a change of state but in zero degree, i hope you undestand.) or droplets of water. because the melted ice or small droplets of water is not...

Homework Statement Calculate the amount (in grams) of ice at 0 degree celsius that must be added to an insulated cup with 250g of water at 40 degree celsius to cool the water to 35 degree celsius. ignore heat transfer to the cup. given data: T(initial) water= 40 celsius T(initial) ice = 0...

Homework Statement 1.) Does the center of gravity of an object have to be within geometric confines of the object? Please explain, coz I'm really confuse. 2.)where is the center of gravity of a doughnut? Explain Homework Equations i don't know the relevant equations but i can...

No, the maximum volume of the pyramid is 24m^3 since volume of pyramid is 1/3 bh where b is the area of bAse..

I think it is not. man, I'm really confused.. But anyway thanks for the help. I need the volume of the water in the pyramid.

Homework Statement An inverted square pyramid has a height equal to 8m and a top edge equal to 3m. Initially, it contains water to a depth of 5m. What is the initial volume of water in the tank? Homework Equations volume=1/3bh where b is e2, as area of square base. The...

Yeah! Happy birthday! This forum is what i called a reliable source of information and a social site for learning! Congratualations!

Thank you very much Doc Al! now i can find the right answer..

friction acts on the block opposing the applied force, since you said that the net force must be zero hence! Ffriction=Fapplied? thanks now its getting clearer, but how is it happened that frictional force is equal to applied force? If the two force are equal then there must be no motion...

Homework Statement a car with a constant velocity of 1m/s, accidentally hits a huge block with a mass of 300kg. Instead of stopping the driver constantly maintain the speed, pushing the block along the way until the car runs out of fuel. Find the force applied in the block if the coefficient...