Time period = time/no. of waves = 6/3 = 2s
Choice C.
That's when convection stops.
The answer is False. Simple machines are divided into three main categories, and not two. They are Levers, inclined planes and Pulleys. <span>These three simple machines all change force in such a way that it makes it easier for us to move an object. </span>
Are there any options or is it not multiple choice.