An 84 kg hockey player skating at 10 m/s to the right collides with another 64 kg player who is standing still. If both players get tangled together during the collision, what is their combined speed?

Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.

Which of the following are guidelines to follow for obtaining accurate observations

Which additional product balances the reaction h2so4 + 2naoh → na2so4 + 2h2o 2oh h2o2 h3o