To express this concept mathematically, the work W is equal to the force f times the distance d, or W = fd. If the force is being exerted at an angle θ to the displacement, the work done is **W = fd cos θ**.

Contents

- 1 What is the formula for work?
- 2 How do you calculate work in physics?
- 3 What is current formula?
- 4 How do I calculate power?
- 5 What is the SI unit of work?
- 6 How do you do work problems in physics?
- 7 What is current unit?
- 8 What is resistivity formula?
- 9 What is Ohm’s law state?
- 10 What is formula of mass?
- 11 What is stress formula?
- 12 What is E mc2 used for?

## What is the formula for work?

Mathematically, the concept of work done W equals the force f times the distance (d), that is W = f. d and if the force is exerted at an angle θ to the displacement, then work done is calculated as W = f.

## How do you calculate work in physics?

Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or Newton • meter (N • m). One joule equals the amount of work that is done when 1 N of force moves an object over a distance of 1 m.

## What is current formula?

The current formula is given as I = V/R. The SI unit of current is Ampere (Amp).

## How do I calculate power?

Power is equal to work divided by time. In this example, P = 9000 J /60 s = 150 W. You can also use our power calculator to find work – simply insert the values of power and time.

## What is the SI unit of work?

The SI unit of work is the joule (J), the same unit as for energy.

## How do you do work problems in physics?

The formula for work is, work equals force times distance. In this case, there is only one force acting upon the object: the force due to gravity. Plug in our given information for the distance to solve for the work done by gravity. Remember, since the object will be moving downward, the distance should be negative.

## What is current unit?

The SI unit of current is ampere which measures the flow of electric charge across a surface at the rate of one coulomb per second. Since the charge is measured in coulombs and time in seconds, so the unit is coulomb/Sec (C/s) or amp. Meanwhile, the formula for electric current is given as follows: I = V/R.

## What is resistivity formula?

Resistivity, commonly symbolized by the Greek letter rho, ρ, is quantitatively equal to the resistance R of a specimen such as a wire, multiplied by its cross-sectional area A, and divided by its length l; ρ = RA/l. The unit of resistance is the ohm.

## What is Ohm’s law state?

Ohm’s law states that the current through a conductor is proportional to the voltage across the conductor. V=IR where V is the voltage across the conductor and I is the current flowing through it.

## What is formula of mass?

Mass is defined as the amount of matter present in a body. The SI unit of mass is the kilogram (kg). The formula of mass can be written as: Mass = Density × Volume.

## What is stress formula?

The stress formula is the divided product of the force by the cross-section area. Stress = frac{Force}{Area} sigma = frac{F}{A}

## What is E mc2 used for?

E = mc^{2}, equation in German-born physicist Albert Einstein’s theory of special relativity that expresses the fact that mass and energy are the same physical entity and can be changed into each other.