Explain how to construct an electromagnet.

Blank liquids and gases exert a buoyant force on objects placed in them

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?