Mass

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Newton's law of universal gravitation

Mass

Weight

Gravity

Honors Physics: Gravitation #2 Name:_______________________ Objectives: P3.1b, 3.1A, P3.6A,B,C,d Directions: Please show knowns, formula and solutions for full credit. 1. The gravitational force between two electrons 1m apart is 5.42 E -71n. Find the mass of an electron. Knowns formula Solution ______________ 2. What would be the earth?s gravitational attraction(g) on a 75kg astronaut who is one earth radius above the earth?s surface? Knowns formula Solution ______________ 3. If the mass of Mars is 6.6E23kg and its gravity is 3.7m/s/s, what is the radius of Mars? Knowns formula Solution ______________ 4. A 25 kg object is 201 km above the earth?s surface. Find Knowns formula Solution

Gravity Review

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Outer space

Measurement

Gravitation

Force

Mass

Gravity of Earth

Orbit

Earth radius

Weight

Satellite

Gravity

Gravity & Circular Motion Review The radius of the earth is about 6400 km. What would be the earth's gravitational attraction on 75 kg astronaut in an orbit 6400 km above the earth's surface. The mass of Mars is about 6.6 x 1023 kg, and the acceleration due to gravity is 3.7 m/s2. What is the radius of Mars? The earth's radius is 6400 km. A 25 kg mass is taken 201 km above the earth's surface. What is the object's mass at the height? What is the weight of the object at this height? What is the acceleration due to gravity at this height? The radius of a planet is 3400 km. If an object weighs 550 N at the surface of the planet, what is its weight 12 km above the surface? 210 km above the surface?

Gravitation Worksheet

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Newton's law of universal gravitation

Mass

Weight

Gravity

Honors Physics: Gravitation #2 Name:_______________________ Objectives: P3.1b, 3.1A, P3.6A,B,C,d Directions: Please show knowns, formula and solutions for full credit. 1. The gravitational force between two electrons 1m apart is 5.42 E -71n. Find the mass of an electron. Knowns formula Solution ______________ 2. What would be the earth?s gravitational attraction(g) on a 75kg astronaut who is one earth radius above the earth?s surface? Knowns formula Solution ______________ 3. If the mass of Mars is 6.6E23kg and its gravity is 3.7m/s/s, what is the radius of Mars? Knowns formula Solution ______________ 4. A 25 kg object is 201 km above the earth?s surface. Find Knowns formula Solution

IB Physics SL test 2014 papers 1

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Energy

Mass

8814-6504 14 pages N14/4/PHYSI/SPM/ENG/TZ0/XX Thursday 6 November 2014 (morning) Physics standard level PaPer 1 INSTRUCTIONS TO CANDIDATES ? Do not open this examination paper until instructed to do so. ? Answer all the questions. ? For each question, choose the answer you consider to be the best and indicate your choice on the answer sheet provided. ? A clean copy of the Physics Data Booklet is required for this paper. ? The maximum mark for this examination paper is [30 marks]. 45 minutes ? International Baccalaureate Organization 2014 88146504 8814-6504 ? 2 ? N14/4/PHYSI/SPM/ENG/TZ0/XX 1. Which of the following is a fundamental unit? A. Ampere B. Coulomb C. Ohm D. Volt

Organic Chemistry Lecture 12b

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Mass spectral interpretation

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Mass

Infrared spectroscopy

Radical ion

Alkane

Ion

Carbon-13

Gas chromatography–mass spectrometry

Chapter 12 * IR Spectrum of Amides Amides will show a strong absorption for the C?O at 1630?1660 cm-1. If there are hydrogens attached to the nitrogen of the amide, there will N?H absorptions at around 3300 cm-1. Chapter 12 * Carbon?Nitrogen Stretching C?N 1200 cm-1 C?N 1660 cm-1 usually strong C?N > 2200 cm-1 For comparison, C?C < 2200 cm-1 Chapter 12 Chapter 12 * IR Spectrum of Nitriles A carbon nitrogen triple bond has an intense and sharp absorption, centered at around 2200 to 2300 cm-1. Nitrile bonds are more polar than carbon?carbon triple bonds, so nitriles produce stronger absorptions than alkynes. Chapter 12 * Summary of IR Absorptions Chapter 12 Chapter 12 * Chapter 12 *

Chemistry The Central Science Chapter 3

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Chemical reaction engineering

Stoichiometry

Chemical reactions

Mass

Yield

Mole

Chapter 3 Chemical Reactions and Reaction Stoichiometry James F. Kirby Quinnipiac University Hamden, CT Lecture Presentation ? 2015 Pearson Education, Inc. Stoichiometry The study of the mass relationships in chemistry Based on the Law of Conservation of Mass (Antoine Lavoisier, 1789) ?We may lay it down as an incontestable axiom that, in all the operations of art and nature, nothing is created; an equal amount of matter exists both before and after the experiment. Upon this principle, the whole art of performing chemical experiments depends.? ?Antoine Lavoisier ? 2015 Pearson Education, Inc. Chemical Equations Chemical equations are concise representations of chemical reactions. Stoichiometry ? 2015 Pearson Education, Inc. 3 What Is in a Chemical Equation?

Metric Conversions Worksheet

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Orders of magnitude

Litre

Metric Conversions Worksheet 1. 0.75 kg to milligrams 2. 1500 millimeters to km 3. 2390 g to kg 4. 0.52 km to meters 5. 65 kg to g 6. 750 micrograms to g 7. 0.25 megameters to cm 8. 23.8 fg to kg 9. 2.77 kg to mg 10. 2.90 cm to terameters 11. 45.6 microliters to megaliters 12. 1.08 kg to ?g 13. 9.57 x 10?8 mm to nanometers 14. 2.00 L to mL 15. 35.28 mL to L
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Physics Multiple Choice Practice

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Orbit

Planet

Mass

Force

Horseshoe orbit

Orbital mechanics

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physics fun gravity

#14 AP MC Quiz Key DYNAMICS/CIRC. MOTION/GRAVITY 1. A hypothetical planet orbits a star with mass one-half the mass of our sun. The planet?s orbital radius is the same as the Earth?s. Approximately how many Earth years does it take for the planet to complete one orbit? A)1 2? B) 1 ?2? C) D) ?2 E) 2. An object shown in the accompanying figure moves in uniform circular motion. Which arrow best depicts the net force acting on the object at the instant shown? A. A B. B C. C D. D E. E 3. The ?reaction? force does not cancel the ?action? force because: A. The action force is greater than the reaction force. B. The action force is less than the reaction force. C. They act on different bodies. D. They are in the same direction.

Physics Old Free Response

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Classical mechanics

Introductory physics

Force

Elevator

Mass

Metre per second squared

Friction

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SHS AP QUIZ 8 KEY 1976 B1 The two guide rails for the elevator shown above each exert a constant friction force of 100 newtons on the elevator car when the elevator car is moving upward with an acceleration of 2 meters per second squared. The pulley has negligible friction and mass. Assume g = 10 m/sec2. (a) On the diagram below, draw and label all forces acting on the elevator car. Identify the source of each force. (b) Calculate the tension in the cable lifting the 400-kilogram elevator car during an upward acceleration of 2 m/sec2. (Assume g 10 m/sec2.) (c) Calculate the mass M the counterweight must have to raise the elevator car with an acceleration of 2 m/sec2.

AP Chemistry

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