Causes and effects of a social problem​

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

How can you increase the strength of an electromagnet?