In order to carry out this experiment properly, we would need to continuously measure both the mass of the LN2 and the temperature of the aluminum cylinder as it cools in the LN2 and integrate the above relation. This would be experimentally more complex to carry out! Fortunately, most of the LN2 boil-off occurs at the higher temperatures. Thus, using the approximation that cAl is independent of temperature (with a value ~900 J/kg-K), then from measuring the total mass of LN2 boiled off, the latent heat of vaporization of nitrogen is:

there are no correct statementd on the list of choices you provided.

think its the third option

  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.

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods