physics on deck
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Physics on Deck. January 2008. January 6, 2010. What’s up? For the short term: Chapter 5. Work and Power. Conservation of momentum Circular or Rotational Motion . Radians, anyone? Universal Gravitation. Conservation of Momentum. And then. We start the second term: Wave mechanics - PowerPoint PPT PresentationTRANSCRIPT
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Physics on DeckJanuary 2008
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January 6, 2010 What’s up? For the short term: Chapter 5. Work and
Power. Conservation of momentum Circular or Rotational Motion . Radians,
anyone? Universal Gravitation. Conservation of Momentum
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And then.. We start the second term:
Wave mechanics Sound Light Optics Electrical fields Electrical circuits Magnetism Quantum Physics Relativity
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January 7
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January 12
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January 14
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Thursday, February 4 Quiz: Angular and tangential velocity and
acceleration. New discussion: Centripetal force Video: Kepler’s Laws. Assignment: 7G and 7H
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Monday, February 8
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2009-2010
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January 19 Last of workbook assignments due. Finish quiz on Collisions at an angle. Finish lab on Conservation of Momentu-
internal force. Do lab on Conservation of momentum –
collisions at an angle. Thursday Jan 21: Test Chapter 6
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So for today… Work and Power Assignment: 5A and 5B
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January 7, 2009 Teacher absent. Quiz: Work and Power Bonus: Meet the neighbors Homework: 5F
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January 9, 2009 Assignment due: 5F Power New discussion: Work – Potential Energy –
Kinetic Energy theorem. Assignment: 5B and 5C
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January 13, 2009 Assignment due: 5B, 5C Quiz: Work, power, Kinetic and Potential
energy. Video: Conservation of energy Assignment due next time: 5D, 5E
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Impulse momentum theorem A mass of 10.0 kg is accelerated from 5 m/s
to 12 m/s in 2 seconds. Calculate the change in momentum, the impulse required, the force that must be applied and the distance traveled in this event.
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Linear collision Glider A of mass 0.355 kg moves along a
frictionless air track with a velocity of 0.095 m/s. It collides with glider B of mass 0.710 kg moving in the same direction at a speed of 0.045 m/s. After the collision, glider A continues to move in the same direction but with a velocity of 0.35 m/s. What is the velocity of B after the collision? Review this problem in 2009
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Collisions at an angle. Sample problem 2.
A 0.5 kg ball collides with another ball at rest of mass 1.0 kg. After the collision, the 1.0 kg ball moves away at an angle of 60o with a velocity of 2.0 m/s. The 0.5 kg ball rolls at an angle of 135 at 3.0 m/s. What was the momentum of the 0.5 kg ball before the collision?
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Collisions at an angle.. Sample problem 1
Two bicyclists approach an intersection, one from the east with a mass of 110 kg and one from the south with a mass of 140 kg and is traveling at 25 m/s. They collide and the bicycles become locked together. The two move and an angle of 300o. What was the speed of the 110 kg cyclist?
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Collisions at an angle Sample problem An object of mass 15.0 kg and a velocity of 2.00
m/s collides with a stationary object having the same mass. After the collision, the first object moves along a line that makes an angle of 400 to the right of the original path. The second object moves at an angle of 100o to the left of the path of the first object after the collision. A) Determine the momentum of each object after the collision. B) Calculate the speed of each object after the collision.
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Wednesday, January 28 Assignment due: 6A Review discussion: Momentum and change
of momentum./ New discussion: Linear collisions. Assignment: 6B and 6D
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Friday, January 30
6B and 6D due Quiz: Momentum, change in momentum, linear
collisions. Discussion: Stopping distance. Collisions at an
angle. Lab: Conservation of Momentum Tuesday: Part II : 4 problem test on Chapter 5.
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Sample problem Stopping distance. A 2500 kg car traveling to the north is slowed down uniformly from an
initial velocity of 20.0 m/s bya 6250 N braking force acting opposite the car’s motion. Use the impulse momentum theorem to answer the following questions:
A. What is the car’s velocity after 2.50 seconds? B. How far does the car move during the 2.50 seconds? C. How long does it take the car to come to a complete stop?
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Tuesday, February 3 Retake of test – problem section 6C due
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Thursday, February 5 Lab: Conservation of momentum – Collision
in 2 dimensions report due Monday Feb. 9 Quiz: Conservation of Momentum Notes: Conservation of energy and
momentum; elastic and inelastic collisions. Lab: Conservation of Momentum – internal
force.
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Internal force An astronaut at rest in space with a mass of
84 kg fires a thruster that expels 85 g of hot gas at 875 m/s. What is the velocity of the astronaut after firing the shot?
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Explosions – internal force An explosion blows a rock into three parts by
internal force. Two pieces go off at right angles to each other; a 1.0 kg piece at 12 m/s and a 2.0 kg piece at 8.0 m/s. The third piece flies off at 40 m/s. What is the mass of the third piece? What was the mass of the rock?
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Monday, January 28 Intro to circular motion. Rotational kinematics and radians; angular
displacement, angular velocity, angular acceleration.
Assignment due Wednesday 7A, 7B Assignment due Friday 7C Assignment due Tues, Feb 5 7D
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Tuesday, March 3 2009
One more quiz on Circular Motion More on Kepler…. Law of Universal Gravitation Understanding the concept – formula work TEST: Thursday Chapter 6 and 7.
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Thursday, March 5 2009 TEST: Momentum and circular motion
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Monday, March 9 Assignment due: Parachutes and terminal V. Class discussion: Torque and equilibrium of
torque. Classwork problems Assignment 8A – due Friday.
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Wednesday, March 11, 2009 Video: Torque Quiz: Torque Discussion: Equilibrium of Forces. Classwork: Problems on equilibrium of
forces. 8B due Friday. Postpone Pendulum lab until Friday.
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Friday, March 13 Teacher absent. Video: Torque Lab: Pendulum. Submit with pendulum
problems. Done and submitted in class. Discuss: Factors that affect the behavior of a
pendulum. Classwork: Problems on equilibrium of
forces.
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Tuesday, March 17 Quiz: Torque Discussion: Wave-Mechanics and Sound.
Notes Next Thursday: Lab: Wave Mechanics
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Thursday, March 19 Lab: Properties of waves.
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Monday, March 30 Notes: Characteristics of waves. Sound. Video: Understanding Time. (53 minutes) Assignment: Bonus. Ocean Waves – due
Friday, April 3 Waves and Sound: Exercises 1-4 and
Additional Exercises 1-5
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Wednesday, April 1 New quiz on Torque Notes/discussion. Sound Intensity and the
Decibel scale.
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Friday, April 3 Quiz: Sound New discussion: Decibel scale/Doppler
effect. Problems due: Sound worksheet #2
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Tuesday, April 7 Quiz: Doppler effect, beats, decibel scale. Intro to Light unit Set up Ripple tanks.
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Finish lab on Waves in a Ripple Tank. Test: Wave Mechanics and Sound on Tuesday April 14
Wednesday, April 8
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Tuesday, April 14 Unit test: Wave Mechanics and Sound Lab: Images from flat mirrors
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Thursday, April 16 Assignment due: #13 Reflection and
Refraction #1-4 Finish lab on Flat Mirrors. Begin lab on Curved Mirrors.
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Tuesday, April 21 New discussion/Review : Finding images
using diagrams. Finding images using the Mirror Equation. Finish lab: Curved Mirrors Assignment for April 27. 14B and 14C. Quiz: Mirrors
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Monday, April 27 09 Quiz: Mirrors and speed of light. Assignment due: Curved mirrors.l Finish and submit lab on Curved Mirrors New discussion: Snell’s Law of Refraction. Begin Lab on Snell’s Law.
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Monday, February 11 New discussion: Law of Universal
Gravitation Video: Navigating in Space
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Wednesday, February 13 Quiz: Circular motion; angular and tangential
values. Lab: The Pendulum’
New discussion/Notes: Satellites, minimum velocity, escape velocity. Pendulum. Torque.
Due Friday: Universal Gravitation worksheet. Due Wednesday: Test Chapter 7 and extras.
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Friday, February 15
Lab due: The Pendulum Quiz Universal Gravitation Review discussion: Hooke’s Law – simple
harmonic motion. TEST on Wednesday _ Circular Motion and
Universal Gravitation.
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Wednesday, February 20 Test: Circular Motion and Universal
Gravitation Assignment: Accelerating and braking on
turns.
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Friday, February 22 Logic activity : The Box Review discussion: Escape velocity and
orbiting velocity. New discussion: Torque Assignment: Practice 8A and Accelerating
and Breaking on Curves. 3 Bonus assignment – 2 due on Tuesday, One
on Thursday
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Tuesday, March 4 Quiz: Torque Video: Standard deviants Conservation of
angular momentum. New discussion/Waves and energy transfer/ Lab: Wave properties. (Slinky)
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Monday, March 10 Lab: Properties of waves due Quiz: Characteristics of waves ReviewNotes/discussion: Behavior of waves
at boundaries New discussion: Inteference Lab: Waves in a Ripple tank. Assignment: Problem 14A
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Wednesday, March 12 Video: The Phenomenon of Sound Textbook assignment: Read 480-486, Do
section review at the end.
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Friday, March 14 Reteach : Superposition of waves
(interference). Finish notes through Sound. Next time
Doppler Effect and Decibel scale Finish Ripple tank lab. Discussion/review: Interference or the
superposition of waves. Class practice.