Airbags
An automobile airbag is a safety device: its sole purpose is to prevent an occupant of the vehicle from impacting with the surrounding structure. Typically, in a collision, Newton's laws of motion tend to be obeyed very well. Of particular concern is the law…
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Astronomy
The Strange Spin of Uranus
Directional terms like north and south make sense here on Earth. The north and south axis of the Earth is…
Medicine
Rocky Mountain Spotted Fever
Rocky Mountain spotted fever (RMSF) is caused by tiny bacteria called rickettsiae that live inside the cells…
Astronomy
Will the Sun Shine Forever?
The Sun is a giant nuclear furnace. In its core, at about 15 million °C, it fuses hydrogen into…
Physics
Can You Miss the Earth?
Have you ever wondered why astronauts float in space? Well, it isn't because there is no gravity in space.…