Power is a measure of the amount of work that can be done in a given amount of time. Power equals work (J) divided by time (s). The SI unit for power is the watt (W), which equals 1 joule of work per second (J/s). Power may be measured in a unit called the horsepower.
What is per unit of time?
A unit of time or midst unit is any particular time interval, used as a standard way of measuring or expressing duration. The base unit of time in the International System of Units (SI) and by extension most of the Western world, is the second , defined as about 9 billion oscillations of the caesium atom.
What is the amount of work done in a unit time?
In physics, power is the rate of doing work. It is the amount of energy consumed per unit time. The unit of power is the joule per second (J/s), known as the watt (in honor of James Watt, the eighteenth-century developer of the steam engine).
What is a unit of work?
In 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.
How much is a unit of work?
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. Named in honour of the English physicist James Prescott Joule, it equals 10 7 ergs, or approximately 0.7377 foot-pounds .
Is work done per unit charge?
The electric force is a conservative force: work done by a static electric field is independent of the path taken by the charge. ... The work per unit of charge, when moving a negligible test charge between two points, is defined as the voltage between those points.
Which unit expresses work per unit charge?
“The work per unit of charge required to move a charge from a reference point to a specified point, measured in joules per coulomb or volts .
What is smallest unit of time?
What is a zeptosecond? A zeptosecond is a trillionth of a billionth of a second. That’s a decimal point followed by 20 zeroes and a 1, and it looks like this: 0.000 000 000 000 000 000 001. The only unit of time shorter than a zeptosecond is a yoctosecond , and Planck time.
What do you mean per unit?
Per unit is a way of expressing the value of a quantity in terms of a reference or base quantity . ... Calculations are simplified because quantities expressed as per unit are the same regardless of the voltage level. Per unit is a way of expressing the value of a quantity in terms of a reference or base quantity.
What goes into cost per unit?
Cost Per Unit = (Total Fixed Costs + Total Variable Costs) / Total Units Produced. A successful business relies on being able to make a profit. For both product and service-based businesses, the cost per unit is a valuable calculation to make sure their costs are lower than what a unit sells for.
What units are work measured in?
One joule is defined as the amount of work done when a force of one newton is exerted through a distance of one meter. In the English system of units, where force is measured in pounds, work is measured in a unit called the foot-pound (usually abbreviated ft-lb).
What is a unit of power?
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 unit work pattern?
Unit of Work is the concept related to the effective implementation of the repository pattern . non-generic repository pattern, generic repository pattern. Unit of Work is referred to as a single transaction that involves multiple operations of insert/update/delete and so on.
What is SI unit of Joule?
The SI unit for energy is the joule (J): 1 J=1 newton metre (N m). Another unit is the calorie (cal), which is defined as the heat required to raise the temperature of 1 g of pure water by 1°C at 1 atm pressure.
What is work and its types?
Work is a scalar quantity and is the product of two vector quantities. Depending on the value of q, there are three types of work: When q = 0°, work is said to be positive . Stretching of the spring is an example of positive work as the force is acting in the direction of displacement of the spring.
What is the unit of work done class 9?
The unit of Work is Newton metre (Nm) or joule (J) . 1 Joule is defined as the amount of work done by force of 1 N when displacement is 1 m. when both the force and the displacement are in the same direction, positive work is done.
