Select the two true statement about a free body diagram 1.) The arrow pointing down represents the force of gravity, and the arrow pointing up represents the force of the ground pushing back on the box

2.)The net force is unbalanced

3.)Gravitational force is pushing up on the box and the force of the ground is pushing down

4.)The net force is equal to zero

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

Ways that industry and agriculture use physical properties to separate substances