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PHY 101

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Chapter 3 20. Suppose that the three balls shown in Exercise 19 start simultaneously from the tops of the hills. Which one reaches the bottom first? Explain 22. Which is greater, an acceleration from 25 km/h to 30 km/h or one from 96 km/h to 100 km/h if both occur during the same tim.....
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Chapter 2: 36, 39 & 47 36. As you stand on a floor, does the floor exert an upward force against your feet? How much force does it exert? Why are you not moved upward by this force? 39. In order to slide a heavy cabinet across the floor at constant speed, you exert a ho.....
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Lab 21 Pressure and Volume of a Gas Lab 20: Density and Buoyancy .....
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Chapter 11 12. Why don’t equal masses of golf balls and Ping-Pong balls contain the same number of balls? 14. Which contains more atoms: 1 kg of lead or 1 kg of aluminum? 22. To become a positive ion, does an atom lose or gain an electron? 24. Helium is an inert gas.....
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Chapter 15: 3 & 7 3. In a glass of water at room temperature, do all the molecules have the same speed? 7. Which has the greater amount of internal energy—an iceberg or a cup of hot coffee? Defend your answer 7. What is the purpose of a layer of copper or aluminum on the bott.....
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Lab 22: Specific Heat of Metals Lab 23: Phase Changes .....
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(Chapter 15) Problem 2: Suppose that a brass rod 1.0 m long expands 0.5 cm when its temperature is increased a certain amount. By how much will a brass rod 100 m long expand with the same change of temperature (Hewitt, 2010, p. 283)? Problem 4: Consider a 40,000-km steel pipe that forms a.....
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Chapter 19: 7 & 31  7. What happens to the period of a wave when the frequency decreases? 31. Why is lightning seen before thunder is heard 13. When a sound wave moves past a point in air, are there changes in the density of air at this point? Explain 16. If a bell is rin.....
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Lab 26: Reflection and Refraction of Light Lab 28: Diffraction and Interference .....
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Chapter 19             4. A weight suspended from a spring is seen to bob up and down over a distance of 20 cm twice each second. What is its frequency? Its period? Its amplitude? On a keyboard, you strike middle C, whose fre.....
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Write a 350- to 700-word summary in which you discuss the value of the scientific investigation process by examining experiments conducted in this course. The scientific method was used to conduct experiments through observations, predictions, experiments, data collection, interpretations, and dr.....
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Chapter 22: 2/6 #2: Suppose that the changes attracting each other in the preceding problem have equal magnitude. Rearrange Coulomb’s law and show that the magnitude of each charge is 2.8x10^-6C (2.8 microcoulombs). Chapter 23: 2/4 #2: The wattage marked on a light bulb is not an inhe.....
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Lab 33: The Effect of a Magnetic Field on Moving Charges .....
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PHY 101 Week 5 Learning Team Assignment Astronomical Research Presentation .....
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Chapter 26 The Sun is 1.50 x 10^11 m from Earth. How long does it take for the Sun’s light to reach Earth? How long does it take light to cross the diameter of Earth’s orbit? Compare this time with the time measured by Roemer in the 17th century (Problem 1). The nearest sta.....
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