Quick Answer: What Is The Formula Of Joule?

How do you convert joules to Watts?

1 jouleThe most common unit is the watt (W), defined as 1 joule (J) of energy per second.

A 40 W light bulb, then, uses 40 J of electrical energy every second to stay lit..

What is work done class 9?

Work done on an object is defined as the product of the magnitude of the force acting on the body and the displacement in the direction of the force. W = F.s. If a force acting on a body causes no displacement, the work done is 0. For example, pushing a wall.

What is dimensional formula?

Dimensional formula is an expression for the unit of a physical quantity in terms of the fundamental quantities. The fundamental quantities are mass (M), length (L), and time (T). A dimensional formula is expressed in terms of powers of M,L and T.

What is dimension of Newton?

Newton (N) is a unit in the category of Force. … This unit is commonly used in the SI unit system. Newton (N) has a dimension of MLT-2 where M is mass, L is length, and T is time.

What is the efficiency formula?

Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula r=P/C, where P is the amount of useful output (“product”) produced per the amount C (“cost”) of resources consumed.

What is the equation for a Joule?

In words: Work is equal to the force that is exerted times the distance over which it is exerted. In equation form: work (joules) = force (newtons) x distance (meters), where a joule is the unit of work, as defined in the following paragraph.

How do we calculate energy?

In classical mechanics, kinetic energy (KE) is equal to half of an object’s mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

What is the formula of work done?

Work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work.

How can I calculate weight?

Weight is a measure of the force of gravity pulling down on an object. It depends on the object’s mass and the acceleration due to gravity, which is 9.8 m/s2 on Earth. The formula for calculating weight is F = m × 9.8 m/s2, where F is the object’s weight in Newtons (N) and m is the object’s mass in kilograms.

How do you convert joules to meters?

1 joule (J) = 1.00 newton meters (N-m)

What is the dimension of angle?

An angle symbolically has dimension . For consistency in the Units package, angles have the dimension length/length(radius). The SI derived unit of angle is the radian, which is defined as the angle for which the radius equals the arclength.

What is energy measured in?

JouleThe official measurement unit for energy is the Joule (J). Among the most common units measuring energy mention should be made of the kilowatt/hour (kWh), used especially for electric energy (in fact it is used to calculate electricity bills).

What is dimension of Joule?

One watt-second is equal to 1 joule. The joule’s dimensions are L²MT⁻². It is force × length (newton × meter, or in terms of base units only:) .

What do you mean by 1 Joule?

Joule, unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre. … In electrical terms, the joule equals one watt-second—i.e., the energy released in one second by a current of one ampere through a resistance of one ohm.

What unit is energy?

jouleThe SI unit of energy/work is the joule (J), named for English physicist James Prescott Joule (1818 – 1889). Joule discovered the relationship between heat and mechanical work, which led to the development of the laws of thermodynamics.

What is the formula for energy in joules?

The formula that links energy and power is: Energy = Power x Time. The unit of energy is the joule, the unit of power is the watt, and the unit of time is the second.

What is the SI unit of work done?

JouleIn the case of work (and also energy), the standard metric unit is the Joule (abbreviated J). One Joule is equivalent to one Newton of force causing a displacement of one meter. In other words, The Joule is the unit of work.