I hope this helps you out!
Answer:I don't know!!!!I don't know!!!!I don't know!!!!I don't know!!!!I don't know!!!!
Explanation:
Answer:
Probably float, but then sink after a while
Explanation:
im not an expert about these topics but I think it will float for a while until the water soaks into the wood causing the wooden cube to sink. Sorry if it's wrong, just what I think
Answer:
a magnet and sifter
Explanation:
a magnet will get all the iron filling and the sifter will separate the powder and sand
Answer:
B
Explanation:
Newton's third law of motion states that to every action there is equal an opposite reaction. Momentum is always conserved provided there is no net force on the body. Considering the experiment: the momentum is conserved as expected but the kinetic energy is not conserved meaning that the collision is not elastic; some energy is converted into internal energy. When the collision is elastic the total kinetic energy before will equal total kinetic energy after and when the body stick together, they move with a common velocity and that described a perfectly inelastic collision. 5J ≠ 4J