Answer: Newton's law of gravity theory disagrees with Einstein's theory. The last one were named Theory of General Relativity and was discovered and proposed by the physicist Einstein in the year of 1915.
Explanation: Until the beginning of 20 century, the physics were ruled by Isaac Newton's ideas. He believed that the gravity was a force caused by the objects mass on the space, made them to be draw towards each other. Newton thought that the greater the mass of the object, the more intense was its attraction, which would justify the planet's moovements around the sun and how the gravity between them maintain the planets on solar orbit. Concluding, he believed gravity was a immediate force of action, regardless of the distance of the bodies.
Contrary to Newton's law of gravity, in 1915, the physicist Einstein created the Theory of General Relativity, wich discovered that gravity was, in fact, the deformation caused by the attraction of massive celestial bodies. This deformation, related to the Sun, for example, creates a curvature on the space-time and this curvature are followed by the other planets.
So, we can conclude that Newton's law of gravity disagree's with the Theory of General Relativity, once the first believes that light force of attraction are transmitted instantly and, as Einstein already prooved, the gravity influency propagates in the speed of light.
Most likely B.
Because the mass of Cart B is higher than Cart A, its speed must be less than cart A's speed after the reaction. Therefore, options C and D are not applicable. Because of the ratio of masses between the carts, it would be safe to assume that A is not the answer. Although, I would still give option A a <2% chance of being the correct answer.
Answer:
2
Explanation:
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A squirrel running up towards the trunk of a tree transforms kinetic energy into gravitational potential energy. Again lifting heavyweight over one's head also requires gravitational potential energy. Pen being held above the table is another instance of Potential Energy. The person walking upstairs would also require more kinetic potential energy.
<u>Explanation</u>
- Gravitational potential energy is the energy that any object possesses owing to its location on the ground surface. The gravitational potential, therefore, happens to be at its maximum level for objects near the earth surface where acceleration is unchanged at 9.8 m/s^2.
- In very simple terms, Gravitational potential energy is that form of energy that is present due to the location of the specific object above the earth's surface. Further, the volume and weight of the object are also very instrumental in determining its gravitational potential energy since the more voluminous the object the greater the kinetic potential energy.
- In the above question, if the squirrel running up towards the trunk of a tree, would require more energy to move up hence more kinetic potential energy. In the same weightlifter lifting weight above his head would require energy to lift it and hence more kinetic potential energy. Again, a person walking upstairs would require more energy which is said to be the potential kinetic energy
I'm not sure about the distance to the nearest star, but it's probably about 4 light-years (L-y).
1 L-y = 1.86 * 10E5 mi/sec * 3600 sec/hr * 24 hr/day * 365 day/yr
1 L-y = 5.9 *10E12 mi and 4 L-y = 2.3 *10E13 mi distance to star
2.3 * 10E13 mi / 900 mi/hr = 2.6 * 10E10 hr hours to star
2.6 * 10E10 hr / (24 hr/day) = 1.1 * 10E9 day days to star
1.1 * 10E9 day / 365 day/yr = 3 * 10E6 yr = 3 million years to star