Grade 11 Physics Study Guide SPH3U1 Unit 1: Kinematics + Intro How to count significant figures: -Embedded 0’s count (i.e. 101 has 3 sig figs) -Any numbers that aren’t zeros count (i.e. 5263 has 4 sig figs) -0’s after the decimal place count (i.e. 1.00 has 3 sig figs) -Trailing 0’s (i.e. 2000 has 4 sig figs) -Numbers after the first non-zero (i.e. 0.0002102 has 4 sig figs) How to add and subtract numbers with proper sig figs: The result will have the least amount of numbers after the decimal
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Environmental Variables and their effect on Horseradish Peroxidase Abstract There are several factors that can affect the rate of reaction of peroxidase such as temperature‚ pH‚ concentration of peroxidase present and whether or not it has been boiled. Our experimental data demonstrated that peroxidase activity peaked between 23 degrees Celsius and 32 degrees Celsius. We found the pH to be 7 for optimal activity. As far as the concentration is concerned our results showed that as the concentration
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so the skeletal muscle cells are supplied with more oxygen and respiratory substrates used to generate energy in respiration where it is needed. A drug that increases heart rate is called a positive chronotrope‚ and this is demonstrated in this experiment when adrenaline is used to increase heart rate in Daphnia. One of the ways adrenaline increases heart rate is through the action of what is known as a ’second messenger ’ or ’transduction component ’‚ in this case it is a chemical made in the
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within the horse which will then lead the horse to stop drooling (McKinley‚ 2016). C.) Experiment: The purpose of this experiment was to test which variables affected the horses sympathetic nervous system leading the horse to stress and drooling. There were multiple variables tested such as the dilation of the horses eyes‚ if the horses ears were up and lastly if the horse drooled. In order to conduct this experiment‚ we had one horse getting honked at by a car and then testing those variables to
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Question How does chewing gum affect concentration on short term auditory memory tasks? Hypothesis Purpose The purpose of this experiment was to show teachers whether or not they should allow their students to chew gum in class. If teachers take a gander at this experiment then teachers may allow gum for the chance of better test grades. It may also help individuals‚ knowing that chewing gum can improve concentration on short term auditory memory tasks. Materials and Procedures Chewing gum
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Psychology Experiment No. 2 Effect of Inconsistency of Objects in Scenario on Perception Introduction: In our everyday lives‚ we are used to seeing objects within their particular characteristic scenarios. For example‚ it is nothing to wonder if we see a person browsing the internet in a computer lab or a car speeding on a road. However‚ when we see an object which is inconsistent with the environmental setting‚ we do feel alarmed. Thus‚ it is shocking for us to see someone working on a
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Why does the water level eventually stop rising? Materials Six measuring beakers 6 ring stands 2 clamps 750 milliliters of water 2.9 grams of steel wool 2.9 grams of copper 2.9 grams of iron Masking tape Permanent marker Procedures 1. Fill all six jars with water so that they are nearly full. It may be helpful to use a measuring cup to make sure that each jar has exactly the same amount of water. 2. Attach a vertical strip of masking tape to the side of each of your test tubes (for marking the water level)and using the
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described by the mass m. Thus‚ the centripetal force is given by the horizontal component of the tension. It is shown that the tension T = m(2L regardless of the angle(. Procedure 1. Measure the mass m of the rubber bung by the triple beam balance. 2. Attach the rubber bung with nylon string thread through the glass tube and a number of weights. First start with M = 0.12kg. 3. Measure the length of L from the rubber bung to the glass tube (i.e. 0.8m). Adjust the position of a small paper marker
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Lab 4 – Energy Sources and Alternative Energy Experiment 1: The Effects of Coal Mining Table 1: pH of Water Samples Water Sample Initial pH Final pH (24-48 hours) Pyrite 6 4 Activated Carbon 7 8 Water 7 7 POST LAB QUESTIONS 1. Develop hypotheses predicting the effect of pyrite and coal on the acidity of water? a. Pyrite hypothesis = If pyrite is added to a beaker with 100mL of water‚ then it will reduce the pH over 48 hours. b. Coal hypothesis = It activated carbon is added
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alleviating jet lag: 1) doses of Vitamin B complex; 2) 10 minutes of meditation; and 3) 15 minutes of aerobic exercise. Each suggestive treatment is complete with a reasonable physiological rationale. I have come up with an experiment to test the 3 variables to figure out what treatments if any will work the best. My hypothesis is that all 3 of the suggestive treatments when done before flying on an airplane‚ will reduce the effects of jet lag. Experiment: A commercial airplane traveling from New York
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