# What is a Research Problem? Explain the Identification of a Research Problem.
-> A research problem is a specific issue, difficulty, or gap in knowledge that a researcher intends to investigate systematically. It provides the foundation for the entire research process.
According to C.R. Kothari, "A research problem is a difficulty that a researcher experiences in the context of either a theoretical or practical situation and wants to obtain a solution."
Identification of a Research Problem
Mean free path is the average distance traveled by a gas molecule between two successive collisions with other molecules.
It is denoted by λ (lambda).
It depends on the size of the molecules, pressure, and temperature.
A higher pressure decreases the mean free path, while a higher temperature generally increases it.
Formula:
[
\lambda=\frac{1}{\sqrt{2}\pi d^2 n}
]
where d = diameter of a molecule and n = number of molecules per unit volume.
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2.pod tackastim izvorom svetlosti podrazumeva se svetlosni izvor cija je linearna dimenzija zanemarljivo mala u poredjenju sa njegovim rastojanjem od objekta koji osvetljava ili od posmatraca. 4 rel spekt osetljivost oka za monohrom svet Vλ predstavlja meru osetljivosti oka na svetlost odredjene talasne duzine u odnosu na max osetljivost oka. definise se kao odnos snage zracenja na talasnoj duzini 555nm koja daje odredjeni svetlosni utisak i sange zracenja na talasnoj duzini λ koja daje isti svetlosni...
UNIT 1: Understanding E-Commerce
1. Electronic Commerce (E-Commerce) Electronic Commerce (E-Commerce) is the buying and selling of goods and services through electronic networks such as the Internet. Examples: ◉Amazon ◉Flipkart ◉Meesho ◉Myntra Overview E-Commerce allows businesses and customers to conduct transactions anytime and from anywhere using computers or mobile phones. Advantages ◉24×7 shopping ◉Global market reach ◉Lower business cost ◉Faster transactions ◉More product
① It is common sense that people's inner beliefs may drive their external behavior.
② If you're attracted to a certain person, you should be more likely to socialize with that person.
③ If you favor a brand of toothpaste, you're more likely to buy it.
④ Of course, our internal thoughts don't always predict our public behavior, but overall what we do obviously reflects what we think.
⑤ But beliefs and behaviors are also related in a more remarkable
Oxidizing Agent
An oxidizing agent is a substance that accepts electrons and is reduced.
Reducing Agent
A reducing agent is a substance that donates electrons and is oxidized.
Zn+CuSO4→ZnSO4+CuZn+CuSO_4\rightarrow ZnSO_4+CuZn+CuSO4→ZnSO4+Cu
Zn → Reducing Agent
Cu²⁺ → Oxidizing Agent
There is no difference between Galvanic and Voltaic cells. Both are the same.
| Galvanic Cell | Voltaic Cell |
|---|---|
| Converts chemical energy into electrical energy. | Converts chemical |
1. Haematemesis -
differentials- oesophageal variceal bleeding secondary to chronic alcohol use
Mallory Weis tear
Borrheave syndrome
Peptic ulcer disease
Investigations-
bedside- full set of basic observations, A to E assessment, ECG
Bloods- FBC, baseline-U&Es, LFTs; coagulation screen, group and save
Imaging- endoscopy
Management -
A to E assessment- stabilise the patient
Keep nil by mouth
Oxygen + IV fluids
group and save
IV terlipressin + antibiotics
stop NSAIDs