↑ T (°c) T; ice Melting (ice +wate) Wate Th + Time
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T
(°c)
T;
ice
Melting
(ice +wate)
Wate
Th
+
Time"
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- In step 3, what happened to the first t in the equation when you start solving it?How does density differ from mass? Mass decreases as density increases. Density is the mass of an object. Density is a per-volume metric of mass. Mass is a per-volume metric of density.Measurements with a Vernier Caliper In the example figure below, the first reading is 1.9 cm or 19 mm. The hundredths of mm or Vernier Scale is then read by counting the number of divisions until you get to the division that lines up with the main metric scale. This is 32 divisions on the hundredths scale. This 32 is multiplied by 0.02 giving 0.64 mm as the answer (Remember that each division on the hundredths scale is equivalent to 0.0 2mm). This means that the length we have measured corresponds to 19.64 mm. By V.Ryan 19 MAIN METRIC SCALE By V.Ryan 3 MAIN METRIC SCALE 2 4 [3↓ 32 DIVISIONS Read and Record the Verniers in centimeters and millimeters in the blank provided. MAIN METRIC SCALE 5 6 HUNDREDTHS OF mm 19 +32 X 0.02 19 +0.64 19.64mm (final answer) 5 HUNDREDTHS OF mm 5 By V.Ryan 6 7 Record cm here: Record mm here: Record cm here: Record mm here: HUNDREDTHS OF mm 11
- A group collected data in an experiment to learn to draw suitable trendline in a graph. They don't know the theoretical model, so they are trying to determine one through this experiment. They used Excel to display the data and to find good fit. They tried linear, exponential, and power trendlines. The result of each trial is shown below. The title of the plot contains the name of the trendline used to fit. What should be their analysis based on the result they have so far? Exponential trendline 20 Power trendline 18 y = 0.8374e047x R? = 0.9851 16 y = 0.8045x1.538. R2 = 0.981 15 14 12 10 10 ..... 4 ..... ....... 2 1 3 4 1 7 Linear trendline 20 y = 3.0209x - 4.6606 15 R? = 0.9293 10 ........ 2 4 6 8 The linear trendline is good fit The exponential trendline is good fit Any one of the three trendlines seems good candidate The power trendline is the best fit 2. 2.Small animals eat much more food per kilogram of body mass than do larger animals. The basal metabolic rate (BMR) is the minimal energy intake necessary to sustain life in a state of complete inactivity. The table lists the BMR in kilocalories per day, the mass, and the surface area for 4 animals. What is the BMR per square meter of the surface area for the mouse?Reference: Density Lab. D = m/V m (y-axis), V(x-axis) If a graph is plotted with m as a function of V, the slope of the resulting line is