An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (2)
A current of 15.0 A for 30 seconds results in a total charge of 450 coulombs flowing through the device. The number of electrons calculated from this charge is approximately 2.81 x 10^21 electrons. This is calculated using the charge of an electron, which is around 1.6 x 10^-19 coulombs.
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Multiple-choice questions:
The answer is (c) Google. Google is one of the most popular search engines in the world, founded by Larry Page and Sergey Brin in 1998. They developed Google's search algorithm while they were Ph.D. students at Stanford University.
The answer is (a) Tim Berners-Lee. Tim Berners-Lee is a British computer scientist, who invented the World Wide Web in 1989. He proposed the system to share and access information on the internet easily using web pages and links.
The answer is (c) Modem. A modem is a device that connects your computer with a telephone line or other communication mediums, allowing you to access the internet or communicate over a network.
Short answer question:
The internet is a vast network of interconnected computers that allows people across the world to access and share information with each other. It functions as a global communication system utilizing a variety of technologies such as email, the World Wide Web, and streaming services, allowing users to connect in real-time.
Two uses of the internet:
Communication: The internet provides platforms such as email, social media, and chat applications, enabling people to communicate instantly regardless of their geographical location.
Information and Research: The internet is a valuable resource for finding information on nearly any topic. Users can access websites, online libraries, educational resources, and databases to conduct research and learn new things easily.
