Convert joules to watts

How to convert joules to watts?

How to convert energy in joules (J) to electric power in watts (W).

You can calculate watts from joules and seconds, but you can't convert joules to watts, since joule and watt units represent different quantities.

Joules to watts calculation formula

The power P in watts (W) is equal to the energy E in joules (J), divided by the time period t in seconds (s):

P_(W) = E_(J) / t_(s)

Watt = joule / second

W = J / s

Example

What is the power consumption of an electrical circuit that has energy consumption of 90 joules for time duration of 3 seconds?

P_(W) = 90J / 3s = 30W

How to convert watts to joules?

How to convert electric power in watts (W) to energy in joules (J).

You can calculate joules from watts and seconds, but you can't convert watts to joules since watt and joule units represent different quantities.

Watts to joules calculation formula

The energy E in joules (J) is equal to the power P in watts (W), times the time period t in seconds (s):

E_(J) = P_(W) × t_(s)

Joules = watts × seconds

J = W × s

Example

What is the energy consumption of an electrical circuit that has power consumption of 30 watts for time duration of 3 seconds?

E_(J) = 30W × 3s = 90J

MS Dos Command

COMMAND : C:\>TIME

TASK : To display time

COMMAND : C:\>DATE

TASK : To display date

COMMAND : C:\>CLS

TASK : To clear screen

COMMAND : C:\>VER

TASK : To display the version of the operating system

COMMAND : C:\>MEM

TASK : To display the amount of memory in the computer system

COMMAND : C:\>DIR

TASK : To display directories & files

COMMAND : C:\>VOL

TASK : To display the label of the hard disk

COMMAND : C:\>EDIT

TASK : To go to the DOS Editor where you can create & work with files

DIR PARAMETERS

COMMAND : C:\>DIR/P

TASK : To display all the directories & files page by page

COMMAND : C:\>DIR/S

TASK : To display all directories, sub-directories & files

COMMAND : C:\>DIR/S/P

TASK : To display all directories, sub-directories & files page by page

COMMAND : C:\>DIR/W

TASK : To display all the directories & files on to the page width

COMMAND : C:\>DIR/ON

TASK : To display directories & files in the ascending order

COMMAND : C:\>DIR/O-N

TASK : To display directories & files in the descending order

COMMAND : C:\>DIR/OD

TASK : To display all the directories & files on to the date

COMMAND : C:\>DIR/L

TASK : To display the directories & files in simple letters

COMMAND : C:\>DIR/4

TASK : To display the year the files & folders were created

COMMAND : C:\>MD_(directory name)

TASK : To make a new dierectory

COMMAND : C:\>CD_(directory name)

TASK : To change the directory

COMMAND : C:\>CD\

TASK : To change the directory to the command prompt

COMMAND : C:\>CD..

TASK : To go to the previous directory

FILES

COMMAND : C:\>DEL_(file name)

TASK : To delete files

COMMAND : C:\>COPY_(file name)_(destination)

TASK : To copy a file

Example à C:\>copy project3.pas C:\>IDM

COMMAND : C:\>MOVE_( file name)_(destination)

TASK : To move the files from one location to another

COMMAND : C:\>REN_( file name)_(destination)

TASK : To rename a file

TO LABEL A FLOPPY DISK

COMMAND : C:\>A:

A:\>LABEL

TASK : To give a label to a floppy disk

WILD CARDS

v (*) sign represents all or any number of characters

v (?) sign represents a single character

Windows Key Board Short Keys

Short Keys	Action Windows
Start + M	Minimizes all open windows
Start + Shift + M	Maximizes All Windows
Start + E	Runs Windows Explorer
Start + R	Open the RUN Dialog Box
Start + CTRL + F	Opens the Search Results-Computer dialog Box (if the computer is connected to a network)
Start + Pause (Break)	Opens the System Properties Dialog Box
F1	Help / Starts Windows Help
CTRL + ESC	Open Start menu
ALT + TAB	Switch between open programs
ALT + F4	Quit program
SHIFT + DELETE	Delete item permanently (Deletes an item immediately without placing it in the Recycle Bin)
CTRL + C	Copy
CTRL + X	Cut
CTRL + V	Paste
CTRL + Z	Undo
CTRL + B	Bold
CTRL + U	Underline
CTRL + I	Italic
SHIFT + right click (Mouse Click)	Displays a shortcut menu containing alternative commands
SHIFT + double click (Mouse Click)	Runs the alternate default command (the second item on the menu)
ALT + double click	Displays properties
F10	Activates menu bar options
SHIFT + F10	Opens a shortcut menu for the selected item (this is the same as right-clicking an object) / for a context menu
CTRL + ESC	Opens the Start menu (use the ARROW keys to select an item)
CTRL + Shift + Esc	Task Manager
ALT + DOWN ARROW	Opens a drop-down list box
ALT + TAB	Switch to another running program (hold down the ALT key and then press the TAB key to view the task-switching window) / Switch between windows
SHIFT	Press and hold down the SHIFT key while you insert a CD-ROM to bypass the automatic run feature
ALT + SPACE	Displays the main window's System menu (from the System menu, you can restore, move, resize, minimize, maximize, or close the window)
ALT +- (ALT + hyphen)	Displays the Multiple Document Interface (MDI)child window's System menu (from the MDI child window's System menu, you can restore, move, resize, minimize, maximize, or close the child window)
CTRL + TAB	Switch to the next child window ofa Multiple Document Interface (MDI) program
ALT + underlined letter in menu	Opens the menu
ALT + F4	Closes the current window
CTRL + F4	Closes the current Multiple Document Interface (MDI) window
ALT + F6	Switch between multiple windows in the same program (for example, when the Notepad Find dialog box is displayed (switches between the Find dialog box and the main Notepad window)
F2	Rename object
F3	Find all files
ALT + ENTER	Open the properties for the selected object
F4	Selects the Go To A Different Folder box and moves down the entries in the box (if the toolbar is active in Windows Explorer)
F5	Refreshes the current window
F6	Moves among panes in Windows Explorer
CTRL + G	Opens the Go To Folder tool(in Windows 95 Windows Explorer only)
CTRL + Z	Undo the last command
CTRL + A	Select all the items in the current window
BACKSPACE	Switch to the parent folder
SHIFT + click + Close button	For folders, close the current folder plus all parent folders Windows Explorer Tree Control
CTRL + TAB/CTRL + SHIFT + TAB	Move through the property tabs
Press SHIFT five times	Toggles Sticky Keys on and off
Press down and hold the right SHIFT key for eight seconds	Toggles Filter Keys on and off
Press down and hold the NUM LOCK key for five seconds	Toggles Toggle Keys on and off
Left ALT + left SHIFT+NUM LOCK	Toggles Mouse Keys on and off
Left ALT + left SHIFT+PRINT SCREEN	Toggles high contrast on and off
Windows Logo	Start menu
Windows Logo + R	Run dialog box (Run menu)
Windows Logo + M	Minimize all
SHIFT + Windows Logo + M	Undo minimize all
Windows Logo + F1	Help
Windows Logo + E	Windows Explorer
Windows Logo + F	Find files or folders
Windows Logo + D	Minimizes all open windows and displays the desktop (Hide/Display all windows)
CTRL + Windows Logo + F	Find computer
CTRL + Windows Logo + TAB	Moves focus from Start, to the Quick Launch tool bar, to the system tray (use RIGHT ARROW or LEFT ARROW to move focus to items on the Quick Launch tool bar and the system tray)
Windows Logo + TAB	Cycle through task bar buttons
Windows Logo + Break	System Properties dialog box
Application key	Displays a shortcut menu for the selected item
Windows Logo + L	Log off Windows
Windows Logo + P	Starts Print Manager
Windows Logo + C	Opens Control Panel
Windows Logo + V	Starts Clipboard
Windows Logo + K	Opens Keyboard Properties dialog box
Windows Logo + I	Opens Mouse Properties dialog box
Windows Logo + A	Starts Accessibility Options (if installed)
Windows Logo + SPACEBAR	Displays the list of Microsoft IntelliType shortcut keys
Windows Logo + S	Toggles CAPS LOCK on and off
TAB	Move to the next control in the dialog box
SHIFT + TAB	Move to the previous control in the dialog box
ESC	Equivalent to clicking the Cancel button
ALT + underlined letter in dialog box item	Move to the corresponding item
ALT + Space + X	Maximize window
NUM LOCK+ASTERISK (*)	Display all subfolders under the selected folder
NUM LOCK+PLUS SIGN (+)	Display the contents of the selected folder
NUM LOCK+MINUS SIGN (-)	Collapse the selected folder