Chem 1 Lab B. Reflect on the important scientific practices of (1) Asking Questions, (2) Planning and Carrying Out Investigations, and (3) Analyzing and Interpreting Data by doing the following: 1. Define each of the three scientific practices. a. Asking Questions: Asking questions is where we discuss what we are looking for in our scientific practices, asking what, when, where, why, how and who.
* Questions of Procedure: What should be done about it? 5. How do classical stases apply in analyzing scientific discourse? * evidential: what exists or doesn’t exist in the natural world? * Interpretive: facts are settled, but argue on what theory applies and so on * Evaluative: the significance * Methodological: procedures and techniques + what will be the outcome 6.
PK-S Lab 03 – Lab Report Name: ____________________ Section: ___________________ EXPERIMENT 3: Trigonometric Measurements Procedures: 1. Experimental measurement of the angles and sides of a right triangle: A. Create a triangle by taping a string against a wall and taping the bottom of the string to the floor or a table set against the wall. Make sure that the wall is perpendicular to the floor or table by measuring angle C, which should be 90o. B.
Exothermic and endothermic reactions. First law of thermodynamics and enthalpies of reactions. Calculate standard enthalpies of formations (using the equation on page 191). Electromagnetic radiation, photoelectric effect and continuous and line spectra. Energy levels and electron configurations (including representation using orbital diagrams) of several common elements on the periodic table.
TOP: Find probabilities for binomial experiments. KEY: Probability | Binomial Experiments 30. ANS: A Identify the parameters of binomial distribution and calculate the probability of the given event using binomial expansion. |Feedback| A|Correct!| B|Did you use the formula to calculate the probability of a binomial experiment correctly?| C|What is the total number of hurdles to be crossed?| D|This is the probability of knocking down two hurdles.| PTS: 1 DIF: Advanced REF: Page 679 OBJ: 12-8.2 Find probabilities for binomial experiments. TOP: Find probabilities for binomial experiments.
This table shows the magnitude found when using the rheostat portion of the experiment. Trial 4 V (v) | I (A) | 2.0 | .02 | 4.0 | .04 | 6.0 | .06 | 8.0 | .08 | 10.0 | 0.1 | 12.0 | 0.12 | 14.0 | 0.14 | 16.0 | 0.16 | 18.0 | 0.18 | 20.0 | 0.20 | Table 4. This table shows the magnitude found when using the Unknown resistor portion of the experiment. In order to find the data from the above tables, my partners and I
Jessica Yan Rick St. Denis, Tyler Wiseman 13 September 2012 Projectile Motion: Ball in the Bin Purpose: The purpose of the experiment is to determine the velocity of a ball launched from the Projectile Launcher device, and then to use that velocity to find where on the floor the ball will land given a specific angle. Theory: Two-dimensional motion is as it sounds, made of the two components of Vertical velocity and Horizontal Velocity. Horizontal Motion can be described as constant, neglecting air resistance, and Vertical Motion is characterized by the acceleration of gravity pulling at 9.8m/s². In this particular experiment, the total velocity will be split into the two components in order to find the time in the air, and horizontal distance from the launcher. The motion of these components can be described as d=vt for constant horizontal motion, and d=1/2at² + Vit.
Quiz 1 Chapter 1: CHE2110 (Please combine Quizzes 1-3 onto a single scantron to be handed in prior to Test 1) 1. | What atom would have a formal charge in this structure? | A) | A | B) | B | C) | C | D) | D | 2. | Which one of the following is the strongest base? | A) | A | B) | B | C) | C | D) | D | 3.
The distance between the forces is given by the Coulombs law through the use of the formula F=kq1q2/r2.0.1newtons = 8.99*109*3.2*10-6*7.7*10-7/r2 R= 555.78 Answer to question 3 • Potential difference between the two plates is equal to velocity which is equal to 6.0*106m/s • Force = mass *acceleration = 1.4*10-13*6.0*106 = -8254 nektons The speed of the particles are computed by the formula V=ED. This is equal to 8.5*10-6*0.15. This is equal to 84.1 Answer to question 4 Voltage = current *resistance. This implies that in this case while V is 5.0 and resistance is 1.0*103, current will be equal to 5/1.0*103, = 500 amps B the direction of the conventional current provides the electric charge movement from the positive side of the battery to its negative side as in indicated in the diagram below Answer to question 5 • This section focuses on the equivalent resistance of a circuit. The equivalent resistance will be equal to (5.0*102+1.00*103)2.
Although today scientists and theoreticians argue about variations applicable to specific problems, the scientific method has been accepted as the basis of scientific inquiry. www.HOLscience.com 17 ©Hands-On Labs, Inc.