A heater that has a specification of 240 V, 2.0 kW takes 10s to raise the temperature of a liquid of mass 500g by 5 deg Celcius. What is the specific heat capacity of liquid ?

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.

Which sentences describe point source pollution? in this type of pollution, the source of the pollution is single and easily identifiable. when runoff water from the melting of snow mixes with debris, it creates pollution. the runoff water, mixed with pollutants, reaches large areas with disastrous effects. alternatively, when a wastewater treatment plant releases harmful chemicals into a stream, the chemicals pollute the stream water because they are not treated for safety.

What happens to the vapor pressure of a substance when its surface area is increased at constant temperature?