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Physics

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Egg Drop Project

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Egg Drop Project By: Denisia Milas 1 Materials/Resources A cardboard box Popcorn A playpen ball cut in half horizontally Pieces of foam Mr. Pennington for giving the distance 2 Interior box design Popcorn on the inside for absorption of the impact Top view of ball where egg goes Inside view of ball where egg goes Note: Foam added for soft cushioning 3 Surface Area and Volume Calculations l= 7 in.; w= 6 in.; h= 4.5 in. SA= 2lw + 2lh + 2wh -SA= 2(7)(6) + 2(7)(4.5) + 2(6)(4.5) = 201 in. -SA= 2(42) + 2(31.5) + 2(27) - SA= 84 + 63 + 54 = 201 SA= 201 in. V= l * w * h -V= (7) * (6) * (4.5) V= 189 in. 3 4 Mass, Velocity, and Acceleration Calculations m= mass of container + mass of egg -m= 215.7 g + 54.6 g

Light Review Sheet

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SHADOWS: dark=umbra, light=penumbra ? ? PINHOLE CAMERA: PLANE MIRRORS: plane mirror makes virtual, right-side up (erect) images law of reflection: angle of incidence equals angle of reflection CURVED MIRRORS: convex: Object placed anywhere: virtual, upright, smaller image formed behind the mirror. Here the image distance, di, is negative since its on the opposite side of the mirror. A convex/diverging mirror has a negative focal length. Concave: Object past focal point(to the left): real, inverted, in front of mirror Object at focal point: no image Object in front of focal point: virtual upright image behind mirror, negative image distance Center of curvature= 2 times the focal distance (C=2f)

physics drag lab

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Curt Kim & Angelica Klosky Period 5 11/4/11 Air Resistance and Terminal Velocity Experiment Objective: The purpose of this experiment is to determine the terminal velocity, and by derivation the power of velocity?s factor in drag force and the drag coefficient, in the specific situation of coffee filters falling in certain classroom conditions.

physics drag lab

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Curt Kim & Angelica Klosky Period 5 11/4/11 Air Resistance and Terminal Velocity Experiment Objective: The purpose of this experiment is to determine the terminal velocity, and by derivation the power of velocity?s factor in drag force and the drag coefficient, in the specific situation of coffee filters falling in certain classroom conditions.

Section Review 6.2

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Joey Towbin p.5 Section Review 6.2 Pg. 131: 1-8 1) Q: The pattern of colors given off by a particular atom is called ? a. an orbital b. an energy level c. a spectrum A: The pattern of colors given off by a particular atom is called a spectrum. 2) Q: Which of the diagrams in Figure 6.17 corresponds to the element Lithium? A: The second choice (1 red, 3 orange, 1 yellow, 1 green and 1 blue) corresponds to the element Lithium. 3) Q: When an electron moves from a lower energy level to a higher energy level the atom? a. absorbs light b. gives off light c. becomes a new isotope A: When an electron moves from a lower energy level to a higher energy level the atom gives off light.

Physics Lab

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Lab ?Conservation of Mechanical Energy Purpose: The purpose of this lab was to investigate the conservation of mechanical energy using a roller coaster to show that energy is constant/conserved but can change forms. Materials: CPO roller coaster track, physics stand, timer, photo gate, stainless steel marble, meter stick, lab paper, pencil, triple beam balance. Procedure: 1. Gather materials listed above. 2. Find the mass of the marble. 3. Assemble the rollercoaster. 4. Use the meter stick to measure the height from the top of the lab bench to the center of the marble at a number of positions on the roller coaster track, corresponding to the chart on the lab sheet. 5. Record this height on the data table. 6. Plug in and power on the photo gate. Set timer to ?interval?.

Gravitational Force Problems

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Gravitational force

Gravitation Problems Name: _____________________ Physics Pd: _____ ? The gravitational force between two asteroids 1200 km apart is 8400 N. Find the following changes in gravity. ? What is the force between them if the distance is 3600 km? ? What is the force between them if the distance is 600 km? ? Our Milky Way galaxy is very similar to our neighboring galaxy Andromeda. Consider that each galaxy contains approximately 4.0 x 1011 stars each star having an average mass of 2.0 x 1030 kg. ? If the gravitational pull of Andromeda is 2.4 x 1030 N, how far away is Andromeda? ? How many light years away is the Andromeda Galaxy? (Note there are 365.25 days per year and light travels at 3.0 x 108 m/s).

Force vs Accel

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Force and Acceleration Lab Analysis 1. Data Analysis and Table: Trail # Total Mass Accelerating mass Accelerating Force Time Distance Trail 1 4385.0 250.0 2452.5 1.58 71.1 Trial 2 4385.0 150.0 1471.5 2.1 79.0 Trail 3 4385.0 50.0 490.5 3.7 81.5 Trail 4 1975.0 50.0 490.5 2.2 81.0 Trail 5 6385.0 50.0 490.5 4.4 84.0 2. Trail 1 Trail 2 Trail 3 Trail 4 Trail 5 Acceleration 63 35 11 33 8 3. (on graph paper) 4. The acceleration of the cart and the acceleration force are directly proportional. 5. (on graph paper) 6. The total mass is indirectly proportional to the acceleration. Conclusion: The weights removed from the string were added to the cart so that the system mass stays the same.

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