1 Wear safety goggles to protect your eyes. 2  Never use a plunger if a chemical cleaner is present in the drain; you risk splashing the chemical on yourself.  Never remove a trap with chemicals present; you risk burns to your skin. Call a professional but make certain you inform them of what chemical you used.
Originally Answered: Why is the Moon drifting away by 1 cm each year? Because of tidal forces between moon and Earth. As Earth and moon pull each other, bulges are created on the surface.
The force of gravity makes sure that it does not float away from the earth and makes it revolve around it. The fact that the moon does not crash into the earth is because of the tangential velocity of the moon, in a direction perpendicular to the direction of the force. In fact, the revolution of the moon around the earth is due to two causes: the tangential motion and the constant falling towards the earth.