3 Question 1 (Marks: 20) On a straight‚ flat section of road‚ a car follows a truck. Initially (t < 0)‚ both are travelling at speed v0 = 90 k.p.h. The truck maintains constant speed throughout. The car is initially 2.0 seconds behind the truck‚ i.e. for t < 0 the car
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Speed of Sound Lab Report Jamie Cook PHYS 1114: College Physics I Oklahoma City Community College December 10‚ 2013 Purpose: The purpose of this experiment is to measure the speed of sound in air and to determine the effects of frequency on the speed of sound. Apparatus (equipment used): Signal generator: manufacturer- EMCO‚ model number- SS-1‚ range- 20Hz-2MHz‚ least count- 1Hz Frequency meter: manufacturer- DEADALON CORPORATION‚ model number- N/A‚ range-
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horizontal. 1. Does the ball clear or fall short of the crossbar? 2. Does the ball approach the crossbar while still rising or while falling? (a) From our equations of motion‚ the horizontal velocity is constant. This gives us the flight time for any horizontal distance starting with initial x velocity vicosθ. Thus the vertical height of gx 2 the trajectory is given as y = x tan θi – . With x = 36.0 m‚ vi = 20.0 m/s‚ and θ = 2v 2i cos2 θi 53.0°‚ we find y = (36.0 m)(tan 53.0°) – (9.80 m/s2)(36
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Physics C-110 Module 1 Chapter 1 1. What is science? Science is a body of knowledge that is ever changing. It is made up of not only facts but also theories that are made up of well-tested hypotheses. 2. Distinguish among the scientific fact‚ hypothesis‚ law and theory As stated above‚ a theory is made up of well-tested hypotheses‚ which in themselves are well educated guesses yet to be proven. A fact is something that can change over time even though it was agreed upon by knowledgeable
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Worldviews Observed in the Film “A River Runs Through It” Laura Paul Colorado Christian University People come from different parts of the world and possess different beliefs based on the way they were raised. It doesn’t matter where you are if you pay close attention you will notice there are many worldviews around you. The film “A River Runs Through It” is conveyed from a biblical worldview‚ however the film itself portrays another worldview as well. This story is
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A River Runs Through It: God‚ Fishing‚ and Montana A River Runs Through It is one of my personal favorite stories. I have read the book and watched the movie before in high school‚ and loved them then. I have also watched the movie with my grandmother several times. We both like the narration by Robert Redford and the story lines. It reflects our own family‚ and is a masterpiece in our opinions. While the film adaptation may be different than Maclean’s novella‚ the film shows the book in a different
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2. The follower axis passes by 20mm offset from the cam axis Draw also the velocity & acceleration diagrams when the speed of rotation of cam is 100rpm. GIVEN DATA: Roller follower; Ɵₒ=150ᴼ; Dwell=30ᴼ Ɵᵣ=150ᴼ; Dwell=30ᴼ; Base radius r=30mm Roller radius=10mm; stroke=50mm; N=100rpm Motion: Simple Harmonic Motion. To Find: i) To draw the cam profile ii) Velocity and acceleration 3.) A cam with flat faced follower has the following specifications
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opens‚ click on ‘Show Both’ for Velocity and Acceleration at the top of the page. Now click and drag the red ball around the screen. Make 3 observations about the blue and green arrows (also called vectors) as you drag the ball around. 1. The green line points in the direction that the ball is going to go 2. The blue line changes the direction it points. 3. The blue line also changes size depending on the speed 2) Which color vector (arrow) represents velocity and which one represents acceleration
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b) Average velocity for the first 2 seconds after the ball was dropped= h2-h02-0 = 430.4-4502-0 = -19.62 = -9.8 m/s c) Average velocity for the following time intervals: i. 1≤t≤4 = h4-h14-1 = 371.6-445.14-1 = -73.53 = -24.5 m/s ii. 1≤t≤2 = h2-h12-1 = 430.4-445.12-1 = -14.71 = -14.7 m/s iii. 1≤t≤1.5 = h1.5-h11.5-1 = h1.5=-4.91.52+450-445.11.5-1 = 438.975-445.11.5-1 = -6.1250.5 = -12.25 m/s = -12.3 m/s d) Instantaneous velocity at t= 1 second
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21. Assessment CRCT Preparation Multiple Choice USE THE DIAGRAM BELOW TO ANSWER QUESTIONS 1–3. |Time (s) |Distance (m) | |0 |0 | |1 |96 | |2 |192 | |3 |288 | |4
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