Business
Boeing lost $52 billion on the stock market in a week, a rout that underscores the challenges facing the aircraft manufacturer amid setbacks over the 737 MAX and the coronavirus pandemic.
Mar 15, 2020
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Security
Whenever you see a little padlock in the address bar of your internet browser, as well as when you use apps, email and messaging, you're relying on something called 'transport layer security' or TLS. It's a protocol that ...
Mar 24, 2020
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Business
The US Air Force is set to reopen a bidding war between Boeing and arch-rival Airbus over the replacement of its ageing fleet of refuelling aircraft essential to Washington's ability to project power beyond its borders.
Aug 11, 2021
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Engineering
America's newest nuclear stealth bomber is making its public debut after years of secret development and as part of the Pentagon's answer to rising concerns over a future conflict with China.
Dec 2, 2022
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Energy & Green Tech
When people think of chemistry, the image that typically comes to mind is a variety of colored liquids in beakers, flasks, and test tubes in a lab. But in actual practice, chemistry can involve materials in all states: liquids, ...
Apr 27, 2024
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15
Business
Tesla's sales from April through June fell to their lowest quarterly level since last fall as supply chain issues and pandemic restrictions in China hobbled production of its electric vehicles.
Jul 3, 2022
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Security
Take extra care before buying face masks or testing kits online, or responding to texts apparently sent to you by the UK government or the NHS. Because while lockdown has helped reduce the spread of the coronavirus, it is ...
Jun 3, 2020
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Machine learning & AI
The European Union's central data regulator said Thursday that it was forming a task force to help countries deal with wildly popular AI chatbot ChatGPT, ramping up the pressure on its US maker OpenAI.
Apr 13, 2023
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Robotics
The subtle adhesive forces that allow geckos to seemingly defy gravity, cling to walls and walk across ceilings have inspired a team of researchers in South Korea to build a robotic device that can pick up and release delicate ...
Nov 13, 2023
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Machine learning & AI
Researchers from Temple University, Sichuan University, and Fudan University published a new paper in the Journal of Marketing that explores the growing use of AI to coach sales agents to determine if there are any caveats ...
Nov 20, 2020
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In physics, a force is any influence that causes an object to undergo a change in speed, a change in direction, or a change in shape. In other words, a force is that which can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate, or which can cause a flexible object to deform. Force can also be described by intuitive concepts such as a push or pull. A force has both magnitude and direction, making it a vector quantity. Newton's second law, F=ma, was originally formulated in slightly different, but equivalent terms: the original version states that the net force acting upon an object is equal to the rate at which its momentum changes.
Related concepts to force include: thrust, which increases the velocity of an object; drag, which decreases the velocity of an object; and torque which produces changes in rotational speed of an object. Forces which do not act uniformly on all parts of a body will also cause mechanical stresses, a technical term for influences which cause deformation of matter. While mechanical stress can remain embedded in a solid object, gradually deforming it, mechanical stress in a fluid determines changes in its pressure and volume.
This text uses material from Wikipedia, licensed under CC BY-SA
