Circular Motion
... on the smaller circular path is A. the same as The answer is D. The centripetal force needed B. one fourth of to maintain the circular motion of an object is inversely proportional to the radius of the circle. C. half of Everybody knows that it is harder to navigate a ...
... on the smaller circular path is A. the same as The answer is D. The centripetal force needed B. one fourth of to maintain the circular motion of an object is inversely proportional to the radius of the circle. C. half of Everybody knows that it is harder to navigate a ...
Speed
... Two seconds later it reaches the bottom of the hill with a velocity of 26m/s. What is the acceleration of the roller coaster? ...
... Two seconds later it reaches the bottom of the hill with a velocity of 26m/s. What is the acceleration of the roller coaster? ...
Rules for drawing electric field lines
... electrons move from the carpet to the shoes. The two objects receive an opposite charge. 2. Conduction - an already charged object can be brought into contact with something else and transfer electrons to or from the new object. The two objects end up the same charge. Ex: when you have become charge ...
... electrons move from the carpet to the shoes. The two objects receive an opposite charge. 2. Conduction - an already charged object can be brought into contact with something else and transfer electrons to or from the new object. The two objects end up the same charge. Ex: when you have become charge ...
HW5a5b_Help Hint
... The new Fg should be more or less than the Old Fg? If more how many times? If less, by a factor of what? Fnew = a number * Fold, You just need to find that number Topic: HW 5b #3 In this problem, be especially wary of round-off; keep 2-3 (non-zero) digits in each answer and throughout your calculati ...
... The new Fg should be more or less than the Old Fg? If more how many times? If less, by a factor of what? Fnew = a number * Fold, You just need to find that number Topic: HW 5b #3 In this problem, be especially wary of round-off; keep 2-3 (non-zero) digits in each answer and throughout your calculati ...
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.