using will call Dispose() rather than await DisposeAsync() and therefore unneccesarily block the current thread for some time. It depends on the type of object how undesirable the difference is.
Let's think about what physics is and what topics are covered in an introductory physics course.
Physics is built on a foundation of math and it seeks to explain all phenomena in the universe. It forms the basis for other sciences like chemistry and biology. Physics uses simple yet elegant math to describe complex phenomena, from galaxies to biological systems. It's about understanding and predicting the universe's complexity based on simple ideas.
Welcome to AP®︎/College Physics 1! In AP Physics 1, you'll learn algebra-based classical mechanics. To make sure you’re prepared with the fundamentals, we recommend completing high school physics before diving into AP Physics 1.
Khan Academy offers free, world-class education in physics, covering forces and motion topics.
User kokos answered the wonderful Hidden Features of C# question by mentioning the using keyword. Can you elaborate on that? What are the uses of using?
The Using scope modifier is supported in the following contexts: Remotely executed commands, started with Invoke-Command using the ComputerName, HostName, SSHConnection or Session parameters (remote session) Background jobs, started with Start-Job (out-of-process session) Thread jobs, started via Start-ThreadJob or ForEach-Object -Parallel ...
By using a joystick or a pointing device, an on-screen keyboard allows people with mobility impairments to type data. The second sentence states that the on-screen keyboard is the one that uses the joystick or pointing device to allow impaired people to type data.
Not using by means that the technology used is incidental, and the focus is on the approach being shown to be feasible. Without more context it's impossible to say what the intended import of the sentence is and whether by would actually be better or not.