URGENT HELP A student investigated how the mass of water in an electric kettle affected the time box
taken for the water to reach boiling point.
The kettle switched off when the water reached boiling point.
The heating element of the kettle was connected to the mains supply.
Explain why the temperature of the heating element increased.

Velocity is a description of both speed and direction, therefore it - a vector - a force arrow - the same as acceleration - a magnitude

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg

An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)