Electrical energy (E) is the product of electrical power (P) and the time (t). Using the equation of electrical energy: E = P × t, the value of electrical energy can be calculated. Let’s solve some problems based on this equation, so you’ll get a clear idea. Electrical Energy Practice Problems Problem 1: Calculate the … Read more
Rotational kinetic energy (KErotational) is half the product of rotational inertia (I) and the square of angular velocity (ω). Using the formula of rotational kinetic energy: KEroatational = ½ × I ω2, the value of rotational kinetic energy of an object can be calculated. Let’s solve some problems based on this formula, so you’ll get … Read more
Kinetic energy (KE) is half times the product of mass (m), and the square of velocity (v). Using the formula of kinetic energy: KE = ½ × m v2, the value of kinetic energy of an object can be calculated. Let’s solve some problems based on this formula, so you’ll get a clear idea. Kinetic … Read more
Elastic potential energy (Us) is half times the product of spring constant (k) and the square of displacement (Δx). Using the formula of elastic potential energy: Us = ½ × k Δx2, the value of elastic potential energy of spring can be calculated. (Δx is +ve when spring is stretched and Δx is -ve when … Read more
Electric potential energy (UE) depends upon the coulomb’s constant (k), quantity of charge (q) and the distance of separation (r). Using the formula of electric potential energy: UE = k [q1 q2] ÷ r, the value of electric potential energy can be calculated. Let’s solve some problems based on this formula, so you’ll get a … Read more
Gravitational potential energy or gravitational energy (PEG) is the product of mass (m), gravitational acceleration (g) and the distance (Δh). Using the formula of gravitational potential energy: PEG = m g Δh, the value of gravitational potential energy of an object can be calculated. Let’s solve some problems based on this formula, so you’ll get … Read more
Potential energy (PE) is the product of mass (m), gravitational acceleration (g) and the height (h). Using the formula of potential energy: PE = m g h, the value of potential energy of an object can be calculated. Let’s solve some problems based on this formula, so you’ll get a clear idea. Potential Energy Practice … Read more
Thermal energy or heat energy (Q) is the product of mass (m), specific heat (c) and the temperature difference (ΔT). Using the equation of thermal energy: Q = m c ΔT, the value of thermal energy of a substance can be calculated. Let’s solve some problems based on this equation, so you’ll get a clear … Read more
Law of conservation of energy states that energy can neither be created nor be destroyed, but it can only be converted from one form to another form. (i.e., The total energy of the system remains constant) Here are some examples of law of conservation of energy in daily life: #1 When a table lamp is … Read more
Mechanical energy or motion energy is the sum of kinetic energy (energy of motion) and the potential energy (energy stored in a system). Here are some examples of mechanical energy or motion energy in your home: #1 Mechanical energy of hammer that allows a nail to go into the wall #2 Mechanical energy of spring … Read more
