Which of the following statements is supported by the first law of thermodynamics?
A The energy inside any system is equal to the energy outside.
B The total amount of energy in the universe is steadily decreasing.
C Energy can never enter a closed system, nor can it leave a closed system
D The total energy in a closed system is a conserved quantity.

Does this organism still meet the definition of a eukaryote ? why or why not?

Density of salty water as compared to the density of pure water is(a) is less(b) is always equal(c) is always more(d) may be less or more

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?