Recent content by lbella026

Homework Statement A ball has a density of 900kg/m^3 and it's volume is 0.03m^3. To submerge in water the ball must be held down by the force. What is the force required to keep the ball submerged. Homework Equations Fnet=ma The Attempt at a Solution Not sure what equation to use...

Homework Statement A cube made from iron has sides equal to 20cm/side. The density of iron is 7860kg/m^3. The cube is completely submerged in water; the density of water is 1000kg/m^3. What is the buoancy force acting on the cube. Homework Equations W(DL)= (D(L))(V)(g) The Attempt...

ok now I understand. Thank you so much!

ohhh would the potential energy be the same as the kinetic energy?? KE =10,000 J. would the potenial energy be lost and kinetic energy gainned?

We haven't yet. I'm unsure of what equation to use which would apply. That equation and the W=force x distance are the only ones I can find in the book. Is there another equation I could use? thanks!

Homework Statement A high diver, mass 50kg sits atop the diving platform with 10,000 Joules of stored gravitational potential energy (PE). The platform has a height of 20m. The diver makes his leap. When the diver has dropped 3/4 of the height what is diver total energy (KE + PE)...

Homework Statement A block has a mass of 20kg is at rest on the floor. This block is then pushed by a horizontal force of 8N across the floor. The final speed is 2 m/s. Determine the distance the box was pushed. Homework Equations Fnet=ma d=(t)(s) a=(chand in velocity)/(change in time)...