# psc1 164 ☈ Name:

1. The graph shows data gathered by a student in SC 130 physical science for the density of soap.

__________ What is the slope of the line without any units?
2. ______________ What is the density ρ of the soap (include units!)?
3. ______________ Will the soap float or sink?
4. __________ A student measures a bar of soap with a length of 5 cm, a width of 3 cm, and a height of 2 cm. The soap has a mass of 36 grams. What is the density of the soap?
5. _______ ___________ A RipStik is accelerated from 100 cm/s to 225 cm/s in 2 seconds. Calculate the acceleration of the RipStik.
6. ____________________ A marble is rolled from a height h of 20 cm on a banana leaf marble ramp. Use the theoretic equation $ѵ=44.2h$   to calculate the velocity of the marble at the bottom of the ramp.
7. __________ ______ Given d = ½gt², where g = 980 cm/s², what is the duration in seconds for a ball to fall from a height of 7840 cm?
8. ______________ Is Micronesia presently experiencing an El Niño or a La Niña?
9. ______________ In which condition are Pohnpei and Kosrae most likely to experience tropical storms and typhoons: El Niño or a La Niña?
10. _____ Based on the climate change presentation by Fenno Brunken on 30 April, will sea level rise by same amount everywhere?
11. _________ _____ Current global climate computer models indicate a rise of 0.8 centimeters per year for Pohnpei. Use this value to calculate the total rise above current sea level over the next 30 years (in 30 years you will be about my age).
12. As seen in the image, three identical vials have equal amounts of a green liquid. Based on what you learned from soap, how would you explain that two are floating while one has sunk to the bottom?
13. Plot the following data on the graph provided and draw a linear best fit line through the data points on the graph.
14. ______________ Calculate the slope of the linear best fit line. The slope is the experimental index of refraction for glass.
15. ______________ Glass is reported to have a theoretic index of refraction of 1.5. What is the percentage error for the slope you calculated based against a theoretic value of 1.5?
16. The graph shows the time versus distance data gathered for three different RipStik runs A, B, and C. The first three questions are matching. Use the letters at the end of the lines on the xy scattergraph.

_____ RipStik moving at a constant speed, no acceleration.
17. _____ RipStik moving faster at a constant rate of acceleration.
18. _____ RipStik moving with a non-constant acceleration .
19. _______ ___________ Determine the speed of RipStik run C.
20. _______ ___________ Determine the speed of RipStik run B from 0 to 3.5 seconds.
21. _______ ___________ Determine the speed of RipStik run B from 4.5 to 5 seconds.
22. RipStik Acceleration Data
time (s) dist (cm) velocity(cm/s)
0 0 0
2.50 200
3.75 400
_______ ___________ Using the data in the table, calculate the speed of the RipStik between the 0 cm and 200 cm.
23. _______ ___________ Using the data in the table, calculate the speed of the RipStik between the 200 cm and 400 cm.
24. ____________________ A marble with a mass of 5.2 grams rolls 30 centimeters in 0.60 seconds. Calculate the momentum of the marble.
25. _____________ A RipStik was accelerated from 0 m/s to 1.8 m/s in three seconds by a 52 year old instructor with a mass of 63 kilograms. Calculate the force that generated the acceleration.
26. _______ A team of Hooke's law researchers measured the extension in centimeters versus the force in gram-force for an elastic band. Their data is plotted on the graph. Is the elastic a linear elastic material?
27. Support your answer above with an explanation. What is the evidence that the material either is or is not a linear elastic material?
28. __________________ Which material below conducts the most heat energy?
29. _________ _________ While walking from E 158° 09.657' to E 158° 09.474' Mayleen measured a distance of 358 meters. Calculate the number of meters per minute.
30. A RipStik was swizzled ("wiggled") across a poster pad paper. The sinusoidal swizzle wave can be seen in the diagram below.

λ = _________ _________ Determine the wavelength λ of one wave of the RipStik swizzle wave.
31. a = _________ _________ Determine the amplitude a of the RipStik swizzle wave.
32. τ = _________ _________ The RipStik took a duration of 0.40 seconds to travel the 40 centimeters seen on the diagram above. Determine the period τ for the RipStik swizzle wave.
33. f = _________ _________ Calculate the RipStik swizzle wave frequency f.
34. ѵwave = _________ _________ Use the wavelength λ and frequency f to calculate the velocity ѵwave of the RipStik swizzle wave.
35. _________ _________ For the laboratory seven data on the graph, what is the experimental speed of sound?
36. The blower motor for the main gym ventilation system runs on 38.8 amperes at 240 volts. How much power in Watts does the motor consume?
37. The blower motor for the main gym ventilation system runs on 38.8 amperes at 240 volts. What is the resistance of the motor in ohms?
38. _______________ In general, what color do acids tend to turn floral pigment fluids?
39. _______________ In general, what color do bases tend to turn floral pigment fluids?
40. _____________________ When a floral litmus solution changes color, what changes, the hue angle, the saturation, or the luminosity?
41. Jeanda, Beverlyn, and Palikkun spoke about Quaoar, Makemake, and Haumea. What are these objects and where are they located?
42. __________________ Some potassium-40 decay processes produce positrons, the antimatter particle partner to an electron. What "Go local" item contains potassium-40 and thus antimatter?
43. __________________ What are protons made of?
44. There are four forces: the strong force, the weak force, the electromagnetic force, and the force of ________________________.
45. Of the four forces above, for which one would the Higgs boson provide an explanation?
46. ____________ __________________ What is the name of the energy that comprises over 70% of the universe and which is causing the universe to expand at an accelerated rate?
47. Weakly Interacting Massive Particles are theorized to be the 20% of the universe known as ____________ __________________ .
48. _____ Is the site swap equation 334233 true? That is can the sequence be juggled?
49. _____ Is the site swap equation 252525 true? That is, can the sequence be juggled?

$percentage error = (experimental−theoretic) theoretic$ $slope m= (y2−y1) (x2−x1)$
mass m = (density ρ)×(Vol V )
Vol = length×width×height
$ѵ= Δd Δt$
d = ѵt
$a= Δѵ Δt$
ѵ = at
d = ½at²
d = ½gt²
p = mѵ
GPE = mgh
KE = ½mѵ²
$F=\frac{\Delta p}{\Delta t}$
Force = mass * acceleration
F = −kx
heat = mass * specific heat capacity * ΔTemperature
period τ = 1 ÷ (frequency f )
velocity ѵ = wavelength λ * frequency f
Voltage = current iresistance R
Power = current iVoltage