Which waves are mechanical waves?
a.
microwaves
b.
sound waves
c.
light waves
d.
radio waves

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

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter

If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?