Nad otwartą z jednej strony rurą o zmiennej długości umieszczono kamerton wydający dźwięk o częstotliwości 3000 Hz. Przy powiększeniu długości zauważono dwa kolejne wzmocnienia dźwięku (rezonans akustyczny). Oblicz odległość między nimi.

What occurs during a combustion reaction

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

A15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°c to 175°c. what is the specific heat capacity of iron?