This is on series circuit- im stuck ong.

Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells? burning fossil fuels contributes to climate change. burning fossil fuels takes place inside expensive fuel cells. fossil fuels aren't widely available, but pure hydrogen is. fossil fuels are nonrenewable.

Place me with this question is my last question

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block