The equipotential surfaces around a point mass are spherical.

The gravitational field lines around a point mass are radial, pointing towards the mass.

The magnetic field lines around a bar magnet form closed loops, exiting from the north pole and entering the south pole.

The magnetic field lines around a long straight conductor are concentric circles centered on the wire.

π bonds are formed by the side-to-side overlap of p orbitals, resulting in a planar shape.

The HOMO of benzene is cyclic due to the delocalization of π electrons in the ring structure.

The highest energy molecular orbital in O2 is a π* orbital, which has a dumbbell shape.

The highest energy molecular orbital in O2 is a diatomic molecular orbital, specifically a π* orbital.

PCl5 has a trigonal bipyramidal shape due to five bonding pairs around the phosphorus atom.

SF6 has six bonding pairs and no lone pairs, leading to an octahedral shape.

AX2E2 indicates two bonding pairs and two lone pairs, resulting in a bent shape.

AX3E indicates three bonding pairs and one lone pair, resulting in a trigonal pyramidal shape.

AX4 indicates four bonding pairs and no lone pairs, resulting in a tetrahedral shape.

The p-orbital has a dumbbell shape.

The water molecule has a bent shape due to the two lone pairs on the oxygen atom.

The SI unit of dynamic viscosity is Pascal-second (Pa·s).

The SI unit of force is Newton (N), which is defined as the force required to accelerate a 1 kg mass by 1 m/s².

The SI unit of length is the meter.

Power is defined as the rate at which work is done or energy is transferred. The SI unit of power is the Watt (W), which is equivalent to one Joule per second.

Pressure is defined as force per unit area, and its SI unit is Pascal (Pa).

The SI unit of temperature is Kelvin.

The SI unit of thermal conductivity is Watts per meter per Kelvin (W/m·K).

The SI unit of time is the second.

The SI unit of viscosity is Pascal-second (Pa·s), which is equivalent to Newton-second per square meter.

A negative ΔG indicates that the biochemical reaction is spontaneous under the given conditions.

The BET theory is significant for determining the surface area of solids based on multilayer adsorption.

The First Law of Thermodynamics establishes the conservation of energy principle, stating that energy cannot be created or destroyed.

Gibbs Free Energy is crucial for predicting the spontaneity and direction of a chemical reaction.

ΔGf° indicates the energy change when a compound is formed from its elements in their standard states.

The Heisenberg Uncertainty Principle states that it is impossible to simultaneously know the exact position and momentum of a particle, which is fundamental in quantum mechanics.