Sublimation is a process of transformation of state of matter where a solid changes directly into its gaseous state.
The molecules in some solids have very weak force of attraction. So the molecules by gaining very little heat from the surrounding can change into gaseous particles.
Which is always constant for a machine of given design: MA or VR ? Ans: VR remains constant for a machine of given design as it depends on the distances moved by the load and effort but MA can vary due to the friction developed between the moving parts of the machine.
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