PHYS 111N Experiment 06: Friction Submitted by: Porsha Renee Sumner Lab Partners: Amber Carter‚ Emily Rawles‚ Clayton Scott Wednesday‚ March 6‚ 2013‚ 9:00 AM Lab Instructor: Uttar Pudasaini Introduction In this experiment we will be examining how the kinetic friction coefficient is altered by changing the mass‚ surface area‚ speed‚ and material contacting each other. In order to find this value‚ we will be using a pulley apparatus that will allow us to measure the average velocity and manipulate
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1. Why are spindle fibers important for mitosis? (5 points) Spindle fibers work as a path for chromosomes to travel(Campbell‚ 2009). 2. State the four bases that make up DNA. (4 points) a. (A)-Adenine b. (G)-Guanine c. (T)-Thymine d. (C)-Cytosine (Campbell‚ 2009). 3. What are the two base pairs? (2 points) a. AG b. CT 4. Answer the following questions: a. Define the term crossing over. (3 points) The phase in meiosis where chromosomes exchange segments of genetic materials (Campbell‚ 2009). b. Explain
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rest (free fall)‚ and ball 2 is simultaneously projected horizontally (projectile motion); successive positions of these two balls are separated by equal time intervals. At any given time‚ both balls have the same y-position‚ y-velocity‚ and y-acceleration (g= 9.8 m/s2)‚ despite having different x-positions and x-velocities. Procedure/Raw data: This experiment was completed using the already mounted projectile launcher (ME-6800). In this experiment‚ the program measures the flight times of two
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Constant Determining the effect mass has on acceleration Block 5 11/25/12 Purpose: The purpose of this lab is to determine the effect of additional mass added to a cart’s existing mass‚ without changing the applied force‚ on the acceleration of the cart. We will test this effect by hanging a constant mass to a cart and use a computer program‚ LoggerPro‚ to calculate the acceleration which is expressed through the slope of the
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to show that the acceleration is proportional to the force causing the motion. Theory Newton’s second law of motion states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to the total mass. a = net force/ total mass If an object is acted on by a net force ‚ it will experience an acceleration that is equal to the net force divided by the mass. Because the net force is a vector‚ the acceleration is also a vector‚
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Free-Fall Lab Assignment Nishad Gothoskar Physics Online Experimental Design: In order to design an experiment to measure free-fall acceleration‚ the researcher must construct a wooden tower with height 10 meters along with a trap door system to release a tennis ball from rest position. In this case‚ the researcher must measure the time the ball takes to free-fall from rest position to the ground. Using this info and the formula: s=vit+ 12at2 s = 10 m vi = 0 m/s The researcher will
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Density Lab January 24‚ 2014 Benjamin I. Purpose- The purpose of this lab is to identify the unknown substances by calculating the densities of the given substances then comparing those densities to the actual densities on the table given. II. Materials- Graduated cylinders Triple beam balance Unknown substances from bag given by teacher Table of known densities Calculator Water III. Procedure- The first thing one must do to identify which substance is which is to calculate the
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height. Today in physics a two dimensional lab was done to decide the distance of an ice cream cone shooter. To do this‚ the formula (d=Ví t + (1/2) at^2) has to be implemented. I decided to make my Y equal to one meter‚ so my calculations would be easy to get. I knew my acceleration for Y was -9.8‚ the velocity initial for Y was zero‚ and the time it will take for the ice cream to reach zero is .452. For X I know that time is also .452‚ and that the acceleration is zero. To get started I decided the
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These measurements had many possible sources of error including air resistance and firing position. This lab increased understanding of projectile motion. Introduction Projectile motion occurs when an object in a two dimensional plane experiences motion only due to gravity. Kinematic equations can be used to describe the components of projectile motion. This allows us to analyze the motion. In this lab measurements will be taken to determine the initial velocity of objects experiencing projectile motion
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The purpose of lab number thirteen was to examine the response of the daphnia to a chemical stimulant. Also examined was how human resting heart rates differed from the daphnia’s. Stimulants are any substances that raise the levels of activity in the body. Stimulants could be a number of things such as physical or chemical. Physical stimulus usually deal with something that affects the five senses such as sight‚ hearing these could be attributed to loud noises or too much light going into your eye
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