Study the heating curve shown.
which statement is best supported by the information in the
heating curve?
heating curve of a substance
temperature (cº)
at segment t-u, the substance changes from a liquid to a
gas and does not change temperature.
at segment t-u, the substance changes from a gas to a
liquid and changes temperature.
at segment q-r, the substance releases heat and
increases in temperature.
at segment q-r, the substance absorbs heat and
decreases in temperature.
heat added (j)

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

Select the three ways that the parallel-plate capacitor differs from a car battery.

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?