Which action best demonstrates the transformation of mechanical energy to heat energy and sound energy? (10 points) 1. stretching a string

2. squeezing a sponge ball

3. throwing a ball upwards in the air

4. striking a hammer on a nail

Answer

I believe it would be 4. striking a hammer on a nail.

Explanation

I think it is 4 because hitting a hammer on a nail will cause a bit of heat to form as you continue to strike, and there is the sound you will hear as well

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.