A 26.8 g diamond ring was heated for sizing to 54.3 oF. It is cleaned through sonication in a 205.3 g vat of water at room temperature 21.2 oC. What is the final temperature of both substances at thermal equilibrium

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3