The second difference is the equal sign instead of less-than-or-equal. This means the frictional force is constant as long as the object is sliding—it doesn’t equal the applied force anymore. That means the net force isn’t zero. Push harder…
Category: 9. Sci/Tech
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The animal that solves puzzles for fun – even when there’s no treat at the end
Raccoons are such curious creatures that they have been shown to solve puzzles even without…
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Many pandemic viruses emerged naturally – but there’s one that most likely came from a lab
Most pandemic viruses that have jumped from animals to humans do not show signs of special…
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Coin used to pay for bus ticket in Leeds found to be 2,000 years old
An odd-looking coin used to pay for a bus fare in Leeds in the 1950s has been found to belong…
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Two Marsupials Re-emerge in New Guinea Rainforests After Being Considered Extinct for 6,000 Years
Learn about two marsupial species discovered in New Guinea that were thought to have been extinct for 6,000 years.
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Hidden Bacteria in Marine Snow May Be Dissolving Ocean Shells — and Disrupting Carbon Storage
Learn how bacteria inside marine snow may dissolve shell minerals and influence how the ocean stores carbon.
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Hip Fractures Can Signal More Than a Broken Bone in the Elderly — Sometimes with Fatal Consequences
Learn more about why hip fractures can be so deadly for elderly patients.
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Record-Breaking Neutrino Detected in the Mediterranean in 2023 May Have Come From Blazars
Learn how a deep-sea detector helped trace the most energetic neutrino ever detected to distant blazars.
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Most Pandemic Viruses Show No Signs of Lab Adaptation — Except This One Historical Outbreak
Learn how scientists identified genetic clues that distinguish natural viral spillovers from lab-handled viruses — and why one historical outbreak of 1977 surprised them.
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