Yes.
Gravitational potential energy is a scalar. Gravity also has a vector energy cmV= cP.
Potential energy is a scalar quantity. Energy is the sum of a scalar part and a vector part. Energy W is the product of velocity V and momentum P; W = [c+V]P =[ -V.P + cP]. The Potential energy is the scalar energy -V.P=-vmv = -mv^2.Physicists consider energy a scalar quantity, but that is incorrect, energy is a Quaternion quantity, a scalar and a vector . The vector energy is the "Dark Energy" is hidden in plain sight, cP.
Electrostatic potential is a scalar quantity. It represents the potential energy per unit charge at a given point in an electric field.
Electrical Potential Energy is a scalar or real number. Ep = zc e2 /4pi r.Total Energy is a Quaternion, the sum of the real or potential energy and the vector energy, Ev= mcV;E = Es + Ev = zc e2 /4pi r + mcV where Ev = mcV and V is the vector velocity.
No, mass and energy are not scalars. Mass is a scalar quantity while energy is a scalar quantity.
Electric potential is a scalar.
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No, electric potential is a scalar quantity, not a vector quantity.
Yes. Energy is a scalar quantity. Doesn't matter what kind of.
No, kinetic energy is a scalar quantity, not a vector. It only has magnitude and no direction.
No, mechanical energy is a scalar quantity. It represents the sum of potential and kinetic energy in a system, without direction.
Yes.