What is able to occur because no surface is perfectly smooth?

What is able to occur because no surface is perfectly smooth?

Correct Answer: friction
temperature
mass
tension

Explanation: Friction occurs because no surface is perfectly smooth. Even surfaces that look smooth to the unaided eye appear rough or bumpy when viewed under a microscope. Look at the metal surfaces in Figure below . The metal foil is so smooth that it is shiny. However, when highly magnified, the surface of metal appears to be very bumpy. All those mountains and valleys catch and grab the mountains and valleys of any other surface that contacts the metal. This creates friction.

Join our channels for latest updates

WhatsApp Telegram

More Random Questions

Q: Which cave has Jain rock-cut sculptures?
Ans: Ellora

Q: Which natural phenomenon is caused by the reflection of sunlight on raindrops?
Ans: Rainbow

Q: CBSE has reduced the syllabus of class 10th and 12th by how much percent?
Ans: 15%

Q: Although magma once filled our moon's craters, what is thought to have ended there over a billion years ago?
Ans: deserts activity

Q: What navigation technology works on the same principle as echolocation?
Ans: topography

Q: What is a large molecule with many repeating units?
Ans: polymer

Q: What was the box office revenue shortfall in 2024 compared to 2019?
Ans: $3 billion

Q: What do you call people who study science and are experts in one or more fields of science?
Ans: scientists

Q: According to a report, how many farmers have left PM Kisan Samman Nidhi?
Ans: 11600

Q: What is the division of the cytoplasm in eukaryotic cells?
Ans: cytokinesis

Q: Which has become the first private company to give reservation to Agniveers on 30 September 2024?
Ans: Brahmos

Q: Which country has been declared trachoma-free by WHO?
Ans: India

Q: In a correctly balanced equation, all coefficients must be what kind of numbers?
Ans: whole

Q: What was the expected impact of tariffs on U.S. antibiotic prices for livestock in 2025?
Ans: Increase

Q: On October 12, 2024, Army Chief General Upendra Dwivedi launched the multi-target equipment 'Agnistra' in which place?
Ans: Gangtok

Youngistan Junction

Welcome to Youngistan Junction, your ultimate hub for staying updated with the latest in current affairs, general knowledge, and general studies! Whether you're a student gearing up for exams or just someone passionate about expanding your knowledge, Youngistan Junction is here to provide you with an extensive collection of well-curated questions and answers.