# What is Dr in work formula?

Work is a. dot product: Work is a dot product. dr. dU = F.

## What is dW in physics?

The total work done on the mass is dW = Fdx where F is the total force acting on the mass. Subsituting for Newton’s second law, F = ma = m(dv/dt), gives: dW = m(dv/dt)dx = m*dx*dv/dt where we have written the mutliplication and division explicitly.

## What is potential energy class 12?

Potential energy is the energy that is stored in an object due to its position or configuration. In other words, potential energy refers to the energy which an object holds due to its position relative to other objects, stresses within itself, its electric charge, or other factors.

## What is meant by potential energy?

potential energy, stored energy that depends upon the relative position of various parts of a system. A spring has more potential energy when it is compressed or stretched. A steel ball has more potential energy raised above the ground than it has after falling to Earth.

## What is Dr DT?

NOTE: dr/dt is the radial component of velocity and r dθ/dt is the transverse component. The magnitude of the velocity, |v|, is called speed.

## What is the SI unit of work?

The SI unit of work is the joule (J). It is defined as the work done by a force of one newton through a distance of one metre.

## Is power dW a DT?

The electrical power P(t)=I(t)·V(t) is a time dependent instantaneous power, which is defined as P=dW/dt, and P=W/t=F.d/t is an expression for the mean mechanical power when a mechanical work W was done in a time t.

## What are dW and DX in physics?

dW/dx describes how work changes with distance. It equals force, not zero.

## What is DF and DX in physics?

In physics, the differential coefficient of a function f(x) is what is now called its derivative df(x)/dx, the (not necessarily constant) multiplicative factor or coefficient of the differential dx in the differential df(x).

## What is potential energy S.I unit?

Hence S.I unit of potential energy is Joule(J)

## What is potential energy formula?

The formula for potential energy depends on the force acting on the two objects. For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.

## What is potential energy and its S.I unit?

Potential Energy : (P.E. or U) “The energy possessed by a bo tody due its position above the ground . or change in state.” UNIT : Unit of P.E. = S.I. UNIT OF ENERGY = Joule (J)

## Why is it called potential energy?

Any object that is lifted from its resting position has stored energy therefore it is called potential energy because it has a potential to do work when released.

## Why is PE called potential energy?

It is called potential because it has the potential to be converted into other forms of energy, such as kinetic energy. Potential energy is usually defined in equations by the capital letter U or sometimes by PE.

## Why Dr DT is V?

This is because, the radial distance from the whole is considered as r, and it is decreasing at rate V. So the rate of decrement is V. Hence dr/dt=-V.

## What is Dr DT equal to?

If the parameter is time t, then magnitude |dr/dt| is the speed.

## What is DP DT physics?

Newton’s second law, in its most general form, says that the rate of a change of a particle’s momentum p is given by the force acting on the particle; i.e., F = d p/dt.

## What unit is energy?

Joule (J). This is the basic energy unit of the metric system, or in a later more comprehensive formulation, the International System of Units (SI).

## Which is unit of force?

The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg.

## Is work a vector?

Work is not a vector quantity, but a scalar quantity.

## What is power output?

Power Output means the average rate of electric energy delivery during one Metering Interval, converted to an hourly rate of electric energy delivery, in kWh per hour, that is equal to the product of Metered Energy for one Metering Interval, in kWh per Metering Interval, times the number of Metering Intervals in a one- …

## Is time a energy?

Time is not directly related to energy itself, but it is definitely related to many aspects of energy. For example, the direction of time (from past to future) can be determined by the flow of energy in the universe. This concept is known as entropy.

## How is power measured?

Power (P) is the rate at which energy is transferred or converted. Thus, power equals work divided by time (P = W / t). The SI unit of power is the watt (W), in honor of Scottish inventor James Watt (1736 – 1819).

## What is dy dx called?

The general form of a derivative is written as d y d x where. A derivative is the instantaneous rate of change of a function with respect to a variable. It is the change in with respect to. Graphically it is defined as the slope of the tangent to a curve.

## What is DX mean?

Dx: Abbreviation for diagnosis, the determination of the nature of a disease.