Hooke’s law equation states that the force (F) needed to stretch or compress a spring directly depends upon the displacement (x) of a spring. Here’s the equation of hooke’s law: Fs = – k x Let’s solve some problems based on this equation, so you’ll get a clear idea. Hooke’s Law Practice Problems Problem 1: … Read more
Ohm’s law equation describes the relationship between voltage (V), current (I) and resistance (R). Here’s the equation of ohm’s law: V = I × R Let’s solve some problems based on this equation, so you’ll get a clear idea. Ohm’s Law Practice Problems Problem 1: Calculate the current flowing through an electronic device which has … Read more
Snell’s law equation describes the relationship between the angle of incidence (θ1), angle of refraction (θ2), refractive index of medium 1 (n1) and refractive index of medium 2 (n2). Here’s the equation of snell’s law: n1 sin θ1 = n2 sin θ2 Let’s solve some problems based on this equation, so you’ll get a clear … Read more
Coulomb’s law equation states that the electric force (F) between two charged objects directly depends upon the quantity of their charges (q1 and q2) and inversely depends upon the square of distance (r) between them. Here’s the equation of coulomb’s law: F = k [q1 q2] ÷ r2 Let’s solve some problems based on this … Read more
Newton’s law of cooling equation states that the rate of heat loss (- dQ/dt) by a body directly depends upon the temperature difference (ΔT) of a body and its surroundings. Here’s the equation of newton’s law of cooling: – dQ/dt = h A (T(t) – Ts) Let’s solve some problems based on this equation, so … Read more
Newton’s law of universal gravitation formula states that the gravitational force (FG) between the two objects directly depends upon their masses (m1 and m2) and inversely depends upon the square of distance (r) between them. Here’s the formula of newton’s law of universal gravitation: FG = G [m1 m2] ÷ r2 Let’s solve some problems … Read more
Newton’s second law equation states that the acceleration of an object directly depends upon the net force (Fnet) applied on it and inversely depends upon the mass (m) of an object. Here’s the equation of newton’s second law: a = Fnet/m Let’s solve some problems based on this equation, so you’ll get a clear idea. … Read more
Formula of conservation of energy: KEi + Ui = KEf + Uf states that the sum of initial kinetic energy (KEi) and initial potential energy (Ui) is equal to the sum of final kinetic energy (KEf) and final potential energy (Uf). Let’s solve some problems based on this formula, so you’ll get a clear idea. … Read more
Photon energy (E) is the product of planck’s constant (h) and the frequency (f). Using the equation of photon energy: E = h f, the value of energy of a photon can be calculated. Let’s solve some problems based on this equation, so you’ll get a clear idea. Photon Energy Practice Problems Problem 1: Calculate … Read more
Mechanical energy (Emechanical) is the sum of kinetic energy (½ m v2) and the potential energy (m g h). Using the formula of mechanical energy: Emechanical = ½ m v2 + m g h, the value of mechanical energy of an object can be calculated. Let’s solve some problems based on this formula, so you’ll … Read more
