If Earth's gravity pulls objects toward it, you'd think you'd see planets careening into the sun and satellites plummeting to Earth. That doesn't happen because objects in orbit move fast enough at right angles to the planet to "fall around" the body they're orbiting. Help a child unde...
"Specific gravity" is, on its face, a somewhat misleading term. It has little to do with gravity, which is obviously an indispensable concept in a range of physics problems and applications. Instead, it relates to the amount of matter (mass) of a specific substance within a given volume, ...
W: Gravity is very important. M: What is gravity? W: It's the force that pulls everything down. M: I don't understand. W: If you pour water into a glass, the water goes down into the glass. M: Of course it does. W: Without gravity, the water would go up. M: You're jo...
How Mass Creates GravityHow does mass bend space-time? That is to say: how does mass create gravity? The answer is the famous Einstein equation of gravity. We explain it in plain language. This is possible, because nature hadoi:10.1007/978-3-319-17891-2_7Kurt Fischer...
Recent observations of travelling gravity waves at the base of the chromosphere suggest an interplay between gravity wave propagation and magnetic field. Our aims are: to explain the observation that gravity wave flux is suppressed in magnetic regions; to understand why we see travelling waves ...
For more than 40 years, scientists have tried to figure out what's causing large parts of Canada to be "missing" gravity. The force of gravity around Hudson Bay is lower than surrounding areas. Learn about two theories that may explain the phenomenon.
This doesn’t mean that Einstein was wrong, though! Instead, it shows that there might be more than one way to explain gravity’s role in the evolution of the universe. Images show (right side of image, in red-blue color) the gas density within the disk of the galaxy with the stars...
According to Newton’s theory of gravity, roughly the same number of stars should accumulate in the leading and trailing tails. So far, this prediction has been extremely difficult to confirm, which involves identifying a small number of stars with similar velocities and ages within a background...
How to straighten a parabola? Ask Question Asked 3 years, 1 month ago Modified 2 months ago Viewed 7k times This question shows research effort; it is useful and clear 72 Save this question. Show activity on this post. Consider the function f(x)=a0x2 for some a0∈R+. Take ...
On Earth, the acceleration owing to gravity has the value 9.8 m/s2. A mass of 10 kg thus has a weight of (10 kg)(9.8 m/s2) = 98 Newtons (N). Weight itself is also confused with density, for the simple reason that given two objects of the same size, the one wi...