Physics as Spacetime Geometry
... observers A and B in uniform relative motion (so they cannot tell who is moving as the experimental evidence proved) because A and B have different times (as Lorentz formally proposed, Einstein postulated and Minkowski explained) and different spaces – each observer performs experiments in his own s ...
... observers A and B in uniform relative motion (so they cannot tell who is moving as the experimental evidence proved) because A and B have different times (as Lorentz formally proposed, Einstein postulated and Minkowski explained) and different spaces – each observer performs experiments in his own s ...
Extra Problem of Chapter 5 to 8 Question 1
... descended 1.50 m. µ k = 0.250 . Use the Method of Energy. This problem can be solved by combining Newton’s law and kinematic equations, but it is easiest to use the work-energy method: • Note that the work done by the tension T on the 8.00 kg block is positive and is equal in magnitude to work done ...
... descended 1.50 m. µ k = 0.250 . Use the Method of Energy. This problem can be solved by combining Newton’s law and kinematic equations, but it is easiest to use the work-energy method: • Note that the work done by the tension T on the 8.00 kg block is positive and is equal in magnitude to work done ...
Chapter 3: Problems
... larger than that of the small box. You then exert a horizontal force F directed right on the large box. Sketch a free-body diagram for (a) the two-box system (b) the large box (c) the small box. (d) Does the large box exert more force on the small box than the small box exerts on the large box? Expl ...
... larger than that of the small box. You then exert a horizontal force F directed right on the large box. Sketch a free-body diagram for (a) the two-box system (b) the large box (c) the small box. (d) Does the large box exert more force on the small box than the small box exerts on the large box? Expl ...
Essential Question:
... -----------------------------------------------------------------------------------------------------------Key vocabulary to preview: coordinate grid, axis, ordered pair, vertical, horizontal axis, coordinate, translation, reflection, opposite of a number ...
... -----------------------------------------------------------------------------------------------------------Key vocabulary to preview: coordinate grid, axis, ordered pair, vertical, horizontal axis, coordinate, translation, reflection, opposite of a number ...
Free Body Diagrams
... pulls a 52N sled across a cement sidewalk at a constant speed. What is the coefficient of friction between the sidewalk and the sled (ignoring air resistance)? 36N ...
... pulls a 52N sled across a cement sidewalk at a constant speed. What is the coefficient of friction between the sidewalk and the sled (ignoring air resistance)? 36N ...
Problem 1: Three forces, given by F = −2 + 2 N, F 2 = 5 − 3
... As it can be seen from the figure below, an 18kg hanging box is connected by a light, inextensible string over a light, frictionless pulley to a 10kg block that is pulled by an external force having magnitude F=300N. If the coefficient of kinetic friction between the surface and the 10kg mass is 0.1 ...
... As it can be seen from the figure below, an 18kg hanging box is connected by a light, inextensible string over a light, frictionless pulley to a 10kg block that is pulled by an external force having magnitude F=300N. If the coefficient of kinetic friction between the surface and the 10kg mass is 0.1 ...
Mechanics, Materials and Waves Revision Book
... The object is released and slides down the slope from P to Q with negligible friction. Assume that the potential energy is zero at Q. Sketch a graph showing the potential energy at different distances measured along the slope, and label it A. On the same set of axes, sketch a second graph showing th ...
... The object is released and slides down the slope from P to Q with negligible friction. Assume that the potential energy is zero at Q. Sketch a graph showing the potential energy at different distances measured along the slope, and label it A. On the same set of axes, sketch a second graph showing th ...
The Cartesian plane
... means of describing locations on a plane by using two numbers as coordinates (rather than a letter and a number). The Cartesian plane is formed by two perpendicular lines. The horizontal line is called the x-axis, while the vertical line is referred to as the y-axis. The point where the two axes int ...
... means of describing locations on a plane by using two numbers as coordinates (rather than a letter and a number). The Cartesian plane is formed by two perpendicular lines. The horizontal line is called the x-axis, while the vertical line is referred to as the y-axis. The point where the two axes int ...
Physics Review #1
... A 0.149-kilogram baseball, initially moving at 15 meters per second, is brought to rest in 0.040 second by a baseball glove on a catcher’s hand. The magnitude of the average force exerted on the ball by the glove is (A) 2.2 N (B) 2.9 N (C) 17 N (D) 56 N ...
... A 0.149-kilogram baseball, initially moving at 15 meters per second, is brought to rest in 0.040 second by a baseball glove on a catcher’s hand. The magnitude of the average force exerted on the ball by the glove is (A) 2.2 N (B) 2.9 N (C) 17 N (D) 56 N ...
Minkowski diagram
The Minkowski diagram, also known as a spacetime diagram, was developed in 1908 by Hermann Minkowski and provides an illustration of the properties of space and time in the special theory of relativity. It allows a quantitative understanding of the corresponding phenomena like time dilation and length contraction without mathematical equations.The term Minkowski diagram is used in both a generic and particular sense. In general, a Minkowski diagram is a graphic depiction of a portion of Minkowski space, often where space has been curtailed to a single dimension. These two-dimensional diagrams portray worldlines as curves in a plane that correspond to motion along the spatial axis. The vertical axis is usually temporal, and the units of measurement are taken such that the light cone at an event consists of the lines of slope plus or minus one through that event.A particular Minkowski diagram illustrates the result of a Lorentz transformation. The horizontal corresponds to the usual notion of simultaneous events, for a stationary observer at the origin. The Lorentz transformation relates two inertial frames of reference, where an observer makes a change of velocity at the event (0, 0). The new time axis of the observer forms an angle α with the previous time axis, with α < π/4. After the Lorentz transformation the new simultaneous events lie on a line inclined by α to the previous line of simultaneity. Whatever the magnitude of α, the line t = x forms the universal bisector.