A bag of sugar has a mass of 2.26 kg. what is its weight

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed ⇒ as it changes into other forms of energy.

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db