Samuel adds a teaspoon of salt to a glass of water. he notices that the salt disappears. samuel takes a dip to discover that the water tastes salty. what kind of change has occurred

Explain why electric current cannot exist if a current doesn't have a voltage source.

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.

Acar jack with a mechanical advantage of 6 needs to produce an output force of 600 n to raise a car. what input force is required? 6 n 100 n 600 n 3,600 n