ELAInteractiveVideo_G8
... A piano is resting on the floor in the living room. The piano is decorated with a fish bowl. My music lesson book is stored on a bookshelf. The cat jumps on the piano and knocks the fish bowl onto the floor. ...
... A piano is resting on the floor in the living room. The piano is decorated with a fish bowl. My music lesson book is stored on a bookshelf. The cat jumps on the piano and knocks the fish bowl onto the floor. ...
Math: MA1 Science: SB1, SB3
... The ball slowly came to a stop, but if it was in outer space the ball would keep rolling and rolling as there is no friction to slow it down. An object at rest will remain at rest and an object moving will continue moving unless acted upon by an unbalanced force. The larger one had a great impact or ...
... The ball slowly came to a stop, but if it was in outer space the ball would keep rolling and rolling as there is no friction to slow it down. An object at rest will remain at rest and an object moving will continue moving unless acted upon by an unbalanced force. The larger one had a great impact or ...
Forces and Motion: Newton`s Framework
... is the cornerstone and starting point of the general theory of relativity, the modern theory of gravitation. To have unified the two aspects of mass would already be a great achievement. Beyond that, however, the general theory of relativity leads to results different from those described by Newton’s ...
... is the cornerstone and starting point of the general theory of relativity, the modern theory of gravitation. To have unified the two aspects of mass would already be a great achievement. Beyond that, however, the general theory of relativity leads to results different from those described by Newton’s ...
Lecture 3. Electric Field Flux, Gauss` Law From the concept of
... Gauss’ Law: works in electrodynamics, in electrostatics it is equivalent to Coulomb’s Law. Powerful tool for computing the electric fields if a problem is essentially 1D due to symmetry. Next time: Lecture 4. Applications of Gauss’ Law, Conductors in Electrostatics. §§ 22.5 Read about Metals and Die ...
... Gauss’ Law: works in electrodynamics, in electrostatics it is equivalent to Coulomb’s Law. Powerful tool for computing the electric fields if a problem is essentially 1D due to symmetry. Next time: Lecture 4. Applications of Gauss’ Law, Conductors in Electrostatics. §§ 22.5 Read about Metals and Die ...
Chapter 22
... 21. Two initially uncharged conductors, 1 and 2, are mounted on insulating stands and are in contact, as shown above. A negatively charged rod is brought near but does not touch them. With the rod held in place, conductor 2 is moved to the right by pushing its stand, so that the conductors are separ ...
... 21. Two initially uncharged conductors, 1 and 2, are mounted on insulating stands and are in contact, as shown above. A negatively charged rod is brought near but does not touch them. With the rod held in place, conductor 2 is moved to the right by pushing its stand, so that the conductors are separ ...
Weightlessness
Weightlessness, or an absence of 'weight', is an absence of stress and strain resulting from externally applied mechanical contact-forces, typically normal forces from floors, seats, beds, scales, and the like. Counterintuitively, a uniform gravitational field does not by itself cause stress or strain, and a body in free fall in such an environment experiences no g-force acceleration and feels weightless. This is also termed ""zero-g"" where the term is more correctly understood as meaning ""zero g-force.""When bodies are acted upon by non-gravitational forces, as in a centrifuge, a rotating space station, or within a space ship with rockets firing, a sensation of weight is produced, as the contact forces from the moving structure act to overcome the body's inertia. In such cases, a sensation of weight, in the sense of a state of stress can occur, even if the gravitational field was zero. In such cases, g-forces are felt, and bodies are not weightless.When the gravitational field is non-uniform, a body in free fall suffers tidal effects and is not stress-free. Near a black hole, such tidal effects can be very strong. In the case of the Earth, the effects are minor, especially on objects of relatively small dimension (such as the human body or a spacecraft) and the overall sensation of weightlessness in these cases is preserved. This condition is known as microgravity and it prevails in orbiting spacecraft.