What is E mc2 used for?
Einstein’s greatest equation, E = mc2, is a triumph of the power and simplicity of fundamental physics.
Matter has an inherent amount of energy to it, mass can be converted (under the right conditions) to pure energy, and energy can be used to create massive objects that did not exist previously..
Is force equal to energy?
F in the definition of potential energy is the force exerted by the force field, e.g., gravity, spring force, etc. The potential energy U is equal to the work you must do against that force to move an object from the U=0 reference point to the position r.
How do you calculate total work done?
The total work done as the sum of the work done by each force is then seen to be Wtotal = Wgr +WN + Wapp + Wfr = 92.0 J.
What is the formula for calculating physics?
Density, Force, Energy, WorkDensity. p = m/V.Force. F = ma.Gravitational. Pe = mgh.Kinetic. Ke = 1/2M * v2Momentum new. p = mv. Average Acceleration Equation. Average Acceleration as a change in velocity during a change in time. ¯a=ΔvΔt=vf−vitf−ti. Average Velocity Equation.
What is the formula for energy?
What is Work, Energy and Power?WorkEnergyDefinitionIn physics, we can define energy as the capacity to do work.FormulaFor the potential energy the formula is P.E. = mgh8 more rows
What is the equation for energy in physics?
Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.
What is the work energy equation?
The work W done by the net force on a particle equals the change in the particle’s kinetic energy KE: W=ΔKE=12mv2f−12mv2i W = Δ KE = 1 2 mv f 2 − 1 2 mv i 2 .