MOD 2C OCT. 10‚ 2013 How tattoos affect the skin Tattooing has been practiced for centuries in many cultures‚ particularly in aisa‚ and spread throughout the world. Tribes in Malaysia where always at war‚ head hunting tribes would tattoo their skin to identify friend or foe. They would tattoo their body to show rank or to warn others of what they can do. Traditionally they would use a needle imbedded in a stick dip the needle into ink and tap into the skin. They would make sure not
Premium Skin Tattoo
stored in the magnetic field. If a circuit containing an inductance is interrupted then the stored energy can release through air (forming an arc). This can destroy a switch contact‚ burn fingers‚ create other damage. In the circuit of Figure 1‚ show how to mitigate the risk (pay attention to polarity!). We give the elements in this circuit some simple values for the purpose of better description and explanation. Say V = 5V‚ R= 1 Ω and L = 1H. Assume inductor is initially uncharged. FIGURE 1
Premium Voltage Electrical resistance Electricity
Mockingbird is based on a true story‚ The Scottsboro Case. Tom Robinson was a black man accused of raping a teenaged white girl. Atticus Finch‚ the defending lawyer‚ has two kids named Scout and Jem. Jean Louise “Scout” Finch‚ is a very smart girl for her age‚ passing most of her grade in everything. Scouts character in To Kill A Mockingbird is outgoing‚ smart‚ and hot-tempered. First off‚ Scout is very smart for her age. In the book her teacher tells her that she can’t read at home anymore‚ that’s how far
Premium To Kill a Mockingbird Harper Lee Truman Capote
the period of oscillations to the length of the pendulum.Sources of error for this procedure included precision in both length and time measurement tools‚ reaction time of the stopwatch holder‚ and the accuracy of the stopwatch with respect to the lab atomic clock. The final result of g takes into account the correction for the error introduced using the approximation. There are opportunities to correct for the effects of mass distribution‚ air buoyancy and damping‚ and string stretching[1]. Our results
Premium Regression analysis Measurement Normal distribution
# Now You See It – Copper Cycle Lab The purpose of the lab is to discover what happens when someone executes a series of procedures‚ beginning with copper metal. What is done | What is observed | 1. Started with copper‚ Cu (s). | reddish‚ brownish‚ orange-ish‚ powder-like | 2. Added nitric acid‚ HNO3 (aq). | acid turns blue and smells like chlorine. | 3. Added water‚ H2O (l). | stayed the same | 4. Added sodium hydroxide‚ NaOH (aq). | changed consistency‚ gel-like | 5. Heated the
Premium Sulfuric acid Copper Zinc
Methods for studying cells in the lab Centrifugation A centrifuge is a device for separating particles from a solution according to their size‚ shape‚ density‚ viscosity of the medium and rotor speed. Centrifugation can be used to separate cells from one culture or to isolate an organelle from the rest of the cell. The process relies on speed; the faster and longer the particle is centrifuged‚ the smaller the particles are that will be separated. Separation occurs by causing the larger particles
Premium Density Liquid Population density
animal’s behavior is based on its response to evolution‚ ecology‚ social organization and sensory abilities of an animal (J.Morgan‚ Investigating Biology p.677). There are three types of behaviors: agonistic‚ orientation‚ and reproductive. Orientation is when the organism is placed in their beneficial environment consisting of two behaviors‚ taxis (movement directly towards or away something) and kinesis (random movement). Reproductive is detected using drosophila in this lab‚ it consists of finding
Premium Fishkeeping Fish
Brianna Cooper Brandon Boucher 2/16/12 Purpose: To understand how both voltaic and electrolytic cells function. Procedure: Refer to pages 34-36 of laboratory notebook for experimental details Results and Discussion: Voltaic Cell Reactions | | | Overall Cell Reaction | Observed Voltage | Theoretical Voltage | Cu2+(aq)+Zn(s) Cu(s)+Zn2+(aq) | 0.947 V | 1.10 V | Cu2+(aq)+Sn(s)Cu(s)+Sn2+(aq) | 0.571 V | 0.473 V | Cu2+(aq)+Fe(s) Cu(s)+Fe2+(aq) | 0.512 V | 0.777 V | Cu2+(aq)+Mg(s) Cu(s)+Mg2+(aq)
Premium Electrochemistry Battery Electrolysis
Investigation Investigate the amount of heat evolved when magnesium reacts with dilute acids. Planning What I am going to do I am going to find out how much heat is given out when magnesium reacts with a variety of dilute acids. In order to make comparisons between the acids‚ I shall use my results to work out how much heat would be given out if 1 mole of magnesium reacted with an excess of each acid. The acids I shall use are hydrochloric acid‚ sulphuric acid‚ nitric acid and ethanoic acid
Premium Hydrogen Sulfuric acid Acid
dm3) of solution‚ as shown as followed equation: Molarity (M) = M = n / V Stock solution is the solution with known concentration. When the solution was diluted‚ only the concentrations will change while the mole number is remain the same. Based on this principle‚ the concentration of dilute solution can be determined by using followed equation: M1V1 = M2V2 Where M1 = concentration of concentrated solution (mol dm3) V1 = volume of concentrated solution (dm3) M2 = concentration
Premium Concentration Chemistry