Conservation of Energy:Question 4 If a substance is measured as having a change in heat energy of -100
joules, what does that mean?

What is the magnitude of the resultant vector round your answer to the nearest tenth

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

How is zig zagging a form of acceleration?