How much does approximately a cup of water increase in temperature when heated in a microwave for 45 seconds?

32 K

Explanation:

A cup of water has a volume of approximately . With water having a density of , the mass of water in a cup is .

A microwave outputs about 700 W of power. In 45 seconds, the energy expended is .

The heat energy supplied to the water is related to the temperature change and the mass of the water by

where is the specific heat capacity of water. This value is .

is the temperature change.

no sign of dia of fuel cell

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.