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... • The ballistic pendulum is a device used to measure the speed of a projectile, such as a bullet. The projectile, of mass m, is fired into a block of mass M, which is suspended like a pendulum (M > m). As a result of the collision, the pendulum-projectile combination swings up to a maximum height h. ...
Introduction
Introduction

... only their own ideas but those of other students. Meaningful discussions of different ideas can occur when the ideas are the students’ own. The second reason that these strategies are beneficial is that research has shown that unless the teaching exposes and addresses students’ alternative conceptio ...
Chap.4 Conceptual Modules Fishbane
Chap.4 Conceptual Modules Fishbane

Practice test Midterm 2-1_Chapter 7
Practice test Midterm 2-1_Chapter 7

... (a) How much work is done by this force as the object moves 6.0 m? (b) If the frictional coefficient between the object and the surface is 0.2 how much of the work is “lost” to friction during these 6.0 m. (c) What is the velocity of the object after 6.0 m if the object starts at rest? (d) How much ...
Solution - American Association of Physics Teachers
Solution - American Association of Physics Teachers

... • Your answer to each question must be marked on the optical mark answer sheet. • Select the single answer that provides the best response to each question. Please be sure to use a No. 2 pencil and completely fill the box corresponding to your choice. If you change an answer, the previous mark must ...
From photoelectric effect to digital imaging - beim Quantum Spin
From photoelectric effect to digital imaging - beim Quantum Spin

Physics 225 Relativity and Math Applications Unit 5 E = mc
Physics 225 Relativity and Math Applications Unit 5 E = mc

... you have discovered yourself. Our study of relativistic dynamics also starts with light. As you will see in Physics 212, Maxwell’s equations describe what light is: it is a particular configuration of electric and magnetic fields propagating through space at speed c. Seriously, light is just force-f ...
Lecture2_FreeFall
Lecture2_FreeFall

if on the Internet, Press  on your browser to
if on the Internet, Press on your browser to

New Concept of Mass-Energy Equivalence
New Concept of Mass-Energy Equivalence

Untitled
Untitled

... Q10: Two 4.0-kg blocks are tied together with a compressed spring between them. They are thrown from the ground with an initial velocity of 35 m/s, 45° above the horizontal. At the highest point of the trajectory they become untied and spring apart. About how far below the highest point is the cent ...
Dynamics - Mr. Grant's Site
Dynamics - Mr. Grant's Site

... -Has a constant velocity, meaning moving at a constant speed in a straight line, or it is standing still Non-inertial frame of reference -Does not have a constant velocity, it is accelerating. ...
Solutions - faculty.ucmerced.edu
Solutions - faculty.ucmerced.edu

... Since Ishell = 23 mR2 , while Isphere = 25 mR2 , we have s r ...
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1. [10 Marks] A train moving with speed V crosses a platform of

Chapter 3: Forces Review
Chapter 3: Forces Review

... The gravitational force between two objects depends on_______. A.their masses B.their velocities C.their shapes D.the distance between them E.more than one of the above (A and D) ...
Problem Set 1 Solutions
Problem Set 1 Solutions

... A comment about notation: Take for example VC/O. It is a vector, indicated in an ordinary sentence by making it in bold or by putting an arrow over the symbol. In equations vectors will usually be indicated with an arrow over the character. The diagonal ‘/’ symbol means with respect to. Hence C/O i ...
Paper 1 (English)
Paper 1 (English)

... types of radiation on the emission of photoelectrons from zinc. They place a zinc plate on top of the disc of a negatively charged electroscope. Ultraviolet and red light are shone alternately onto the zinc plate as shown below, with the electroscope fully charged in each case. ...
Fictive forces
Fictive forces

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Grade 7/8 Math Circles Physics Vectors and Scalars

Physics
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The Lorentz Force and the Radiation Pressure of Light
The Lorentz Force and the Radiation Pressure of Light

Momentum Problems (From Merrill Principles and Problems with
Momentum Problems (From Merrill Principles and Problems with

... a. If the balls stick together, what is their combined speed and direction after the collision? b. If the balls rebound, with the 3 kg ball moving westward at 1 m/s after the collision, what is the speed and direction of the 1 kg ball after the collision? 23. One way of measuring the muzzle velocity ...
Physics 106P: Lecture 1 Notes
Physics 106P: Lecture 1 Notes

... quantities. So far we only talked about the magnitude of these vectors. But as vectors they also have a direction. Both angular velocity and acceleration point along the rotation axis. ...
Physics
Physics

... 55. A box slides with initial velocity 10 m/s on a frictionless surface and collides inelastically with a stationary identical box. What is the final velocity of the combined boxes? (A) 0 m/s (B) 5 m/s (C) 10 m/s (D) 20 m/s Questions 56-57 A uranium nucleus (at rest) undergoes fission and splits int ...
APRotMotionHW2010.29.. - Jaclyn Kuspiel Murray
APRotMotionHW2010.29.. - Jaclyn Kuspiel Murray

... A "swing" ride at a carnival consists of chairs that are swung in a circle by 12.0-m cables attached to a vertical rotating pole, as the drawing shows. ( = 62.0°) Suppose the total mass of a chair and its occupant is 198 kg. ...
< 1 ... 67 68 69 70 71 72 73 74 75 ... 170 >

Faster-than-light

Faster-than-light (also superluminal or FTL) communication and travel refer to the propagation of information or matter faster than the speed of light.Under the special theory of relativity, a particle (that has rest mass) with subluminal velocity needs infinite energy to accelerate to the speed of light, although special relativity does not forbid the existence of particles that travel faster than light at all times (tachyons).On the other hand, what some physicists refer to as ""apparent"" or ""effective"" FTL depends on the hypothesis that unusually distorted regions of spacetime might permit matter to reach distant locations in less time than light could in normal or undistorted spacetime. Although according to current theories matter is still required to travel subluminally with respect to the locally distorted spacetime region, apparent FTL is not excluded by general relativity.Examples of FTL proposals are the Alcubierre drive and the traversable wormhole, although their physical plausibility is uncertain.
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