PHYSIC FORMULA

• Formula of speed ~ S=d/t
• Formula of average speed~ average speed=total distance travel/total time taken
• Formula of accelaration~ a=v-u/t
• Formula of gravitional field strenght~ w=mg
• Formula of density~p=mv
• Formula of force~F=ma
• Formula of spring constant~K=fx
• Formula of moment~ Forcexperpendicular distance from the pivot (90 degree)
• Formula of momentum~p=mv
• formula of impulse~force x time
• Formula of resultant force~change in momentum/time taken
• Formula of kinetic energy~Ek=1/2mv2
• Formula of change in gravitional potential energy~Ep=mgh
• Formula of work done~w=fd
• Formula of efficiency~(useful energy input)/(total energy input) x100%
• Formula of 2nd efficiency~(useful energy output)/(total energy input) x 100%
• Formula of power~p=wt
• formula of 2nd power~p=Et
• Scalar-only has magnitude
• Vector- both magnitude and directions
• Velocity = change in displacement/time taken
• Acceleration is change in velocity in time
• Q(Charge)= It
• I- Current t- Time Q/C- charge
• V= F(lamda- λ)
• V= wavespeed (m/s) F= Frequency (Hz) λ= Wavelenght (m)
• Pressure- Force per unit
• Pressure (pa)-N/M2
• presurre are divided into 3- Solid, liquid, Gas
• Pressure: P= F/A F- force A- area(m2)
• Newton 1st law- Inertia and mass
• Newton 2nd law- F=ma
• Newton 3rd law- Every action has an equal but opposite reaction
• Magnet will repel if its like poles
• why iron stick to the magnet? = Cause iron will be induced and iron is a magnetic material
• Types of charge

  There are two types of charges: positive and negative. Like charges repel each other, while opposite charges attract each other.
• Coulomb's Law


  States that the force between two charges is proportional to the product of their magnitudes and inversely proportional to the square of the distance between them.
• Newton's Laws of Motion


  Three laws that describe the relationship between force, mass, and acceleration: • Law 1: Inertia • Law 2: Force and acceleration • Law 3: Action and reaction
• Induced Magnetization


  The phenomenon where a material develops its own magnetic field and becomes magnetized when exposed to a magnetic field.
• Alpha Radiation

  Consists of 2 protons and 2 neutrons, identical to helium nucleus. Has a charge of +2 and a mass of 4u. Can be stopped by paper or a few cm of air.