What is False? Density is a material property. Since both materials are the same there can be no difference in density.
What is True? Although iron is a solid at what we call normal temperatures, iron can also be a liquid, gas, or plasma. This is true of any element. .
What is False? According to quantum mechanics, electrons move around the nucleus in orbitals with well-defined yet complex shapes. If we could see orbitals, they would look nothing like a tiny solar system.
•What is true? The melting and freezing temperatures of water are exactly the same.
What is true? The melting and freezing temperatures of water are exactly the same.
What is increase the time of contact with the ball
requires a smaller force
What is the trampoline applies a bigger impulse
A mass with a momentum of 40kgm/s receives an impulse of 30 Nsec in the direction opposite its motion. Its final momentum is: