Why do computers need ram and rom? explain simply. : )

RAM stands for Random Access Memory
ROM stands for Read Only Memory

Computers need RAM because RAM is the place in the computers, where the operating system, application programs, and data (in current use) are stored that way the computers processor can easily reach it. ROM is memory that can not be changed by a program or the user. ROM has its memory even after it is turned off. ROM is an example of telling your computer how to start up.

Sorry that was kinda long. Hope this helps you out! Have an AWESOME rest of your day!

answer: when the substance contain the two parts (polar and non-polar) like soap.

explanation:

soap is produced from the basic hydrolysis of ester "saponification", it is considered as a salt of hydrocarbons. the soap molecule contains the two parts: a polar group   (-coo-na+) and a non-polar group (r-hydrocarbon part). the polar group is called the head and the tail is the non-polar group. the polar group is hydrophilic in nature (water loving) and the non-polar group is hydrophobic in nature (water repelling).the polar/non-polar nature of a substance is useful that it can dissolve the non-polar substances by the polar part and also can dissolve the polar substances by the non-polar part. it commonly used in detergents and soaps.