Life of Pi (film)
2012
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Every Monday Science Trek releases a new video that introduces children to math, science, technology, engineering, and math (STEM) career potentials in a fun, informative way. Find out more about...
- 4 min
Apr 1, 2015 · Join Dr. Binocs as he Zooms In on the concept of gravity which is an invisible force that pulls you back to the Earth's surface.
- 3 min
- 1.7M
- Peekaboo Kidz
Feb 22, 2011 · People have a lot of different ideas about what gravity is: a downward force that stops you from flying off into space, an attraction smaller objects experience towards larger objects, or a...
- 2 min
- 344.3K
- Veritasium
Introduction to gravity. Newton's Law of Universal Gravitation describes the strength of gravitational attraction between two objects. The gravitational force is equal to the mass of object 1 times the mass of object 2, divided by the distance between the objects squared, all times the gravitational constant (G).
- 16 min
- Sal Khan
- It is the same principle as an airplane that is taking off. It has the thrust and the lift and so can resist gravity. In the case of the bird the l...
- @terryjbrennan You are incorrect. Photons are, by nature, massless. That is why they are able to travel at the speed of light (C) and not just belo...
- The constant G can be calculated from data from experiments. This was first done by Cavending 111 years after Newton published the formula. Basical...
- helium has very less density so it apparently floats in air because air has a greater density. just as how ice floats on water because ice as a low...
- On very rare occasions. A gas molecule, like any other escaping projectile, requires enough velocity (escape velocity) to leave from an orbiting pa...
- Let's take a different approach. Imagine the two masses are in orbit with mass M and m. Orbit is just continous freefall, which is why the ISS expe...
- Photons have no rest mass, but they do have energy, and from relativity energy and mass are equivalent, so the photon will interact with gravity fo...
- Absolutely correct, but you will need millions if not billions, trillions, or more apples
- This was basically a three step process. 1) First of all, you have Newton's Law of Universal Gravitation, that states that the force of attraction...
- Why does it need a cause? It could simply be the way it is. Electromagnetism isn't created by charges, rather a charge is simply how a particle int...
Nov 8, 2019 · This video helps students investigate the force of gravity and how all objects, regardless of their mass, fall to the ground at the same rate. Gravity, or gravitation, is a natural...
- 3 min
- 6.9K
- Harmony Square - Educational Videos & Activities
Mar 31, 2023 · Gravity is the invisible force that pulls everything down to the ground (Earth’s surface). Everything on Earth is affected by gravity: people, plants, animals and objects. Without gravity you wouldn’t be able to go down a slide, play basketball, or skydive.
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Gravity is more than just things falling down. It's an attractive force that exists between any two objects with mass. Every object with mass, like Earth or a lamp, has a gravitational pull. The strength of this pull depends on the mass of the objects and the distance between them.
- 4 min
- Khan Academy
