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Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) designates a quantitative problem, for which you should show all your work.
The turning point the end of section 15.2 presented the idea that humanity is now at turning point, and that current generations have a greater responsibility for the future than it any previous generation do you agree with this assessment? If so how can we ensure that we deal with this responsibility wisely in a way that build a better future for the entire human race? if not ,why not?
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Cosmic Perspective Fundamentals
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- Instructions: Your task is to create a model in response to the prompts in the question below. Be sure to apply a model from this class and include the relevant diagram(s) for that model. And don’t forget to use the Claim, Evidence, Reasoning framework to present your solution. Phenomenon: Runaway Truck Ramp A truck was driving on a highway at 30 m/s when its brakes gave out. The driver steered it onto a “runaway truck ramp”, consisting of an upward ramp (rising 12 meters vertically over 120 meters horizontally), and ending with a compressible barrier which you can model as a giant spring with spring constant “k”. The compressible barrier can be compressed by a maximum 0.5 meters before it stops working. Graphic attached Values: Mass of the truck: 20 metric tons (1 metric ton = 1000kg). Mass of the driver: Choose a reasonable value. Truck Ramp Dimensions: 12 meters vertical, 120 meters horizontal Spring constant k= 6.0 x 107 J/m2. Part 1: Big…arrow_forwardPlease organize your work very clearly, and circle your answers. thank youarrow_forwardPlease answer part A. Show all work and highlight your answers. Thank you in advanced!arrow_forward
- Read each problem carefully. Solve each quadratic equation for the variable(s) specified. Be sure to show all of your work. Explain in two to three sentences what the meaning of the solution(s) are in relation to the problem situation. A rubric has been provided for reference. 1. An object is propelled off of a platform that is 75 feet high at a speed of 45 feet per second (ft./s). The height of the object off the ground is given by the formula h(t) = - 16t+45t+75, where h(t) is the object's height at time (t) seconds after the -16 object is propelled. The downward negative pull on the object is represented by Solve for t.arrow_forwardWrite solution detailed solution (Given, Unknown, Formula, Step-by-Step Solution). Box your final answer. Please make sure that your handwritten is readable. Thank you.arrow_forwardRadiocarbon dating is the most common and important absolute dating technique in archaeology. The method has proven invaluable for providing calendar dates for a range of different materials and many different time periods. Radiocarbon dating, however, is not without its limitations and uncertainties, so it is important for archaeologists to be aware of a range of issues when using the technique. For the second part of this assignment, please answer the questions below. 6. List two kinds of archaeological materials can be dated using the radiocarbon method and two that cannot be dated with radiocarbon. 7. In one or two sentences, explain why radiocarbon ages need to be calibrated into calendrical ages? 8. A radiocarbon date on wood charcoal was obtained from Layer N in the stratigraphic profile above. The date has a radiocarbon age of 5500 BP ± 50 yrs and it calibrates to 4450-4260 cal. BC. Burial W in Layer E was also dated and has a radiocarbon age of 5000 BP ± 30, which…arrow_forward
- Read the following items carefully. State your assumptions if any. Show your COMPLETE solution and BOX your final answers. Keep your answers and solutions in 4 decimal places. > Initially, 100 milligrams of a new radioactive substance Tobium, named after its discoverer Sir Tobs, was discovered and collected from one of the moons of Jupiter. After 6 hours from collection, the mass decreased by 4%, If the rate of decay IS proportional to the amount of the substance present at time t, find the amount of Tobium remaining after 48 hours.arrow_forwardWould like answers for part B and C ONLY please-need info from part a to answer them. I already solved part a) 1)Energy Efficiency at Home : Suppose you have two kettles – a plug-in electrickettle and a stovetop kettle. The electric kettle uses electricity from a natural gas fired powerplant, while you boil water in your stovetop kettle on a natural gas burner. a)Based on the following information, which of these kettles demonstrates a higher energy efficiency (i.e., which is more efficient at using energy from fuel to heat water)? Please calculate the efficiencies of each kettle and express answers as percentages. -The natural gas power plant converts chemical energy of the natural gas to electrical energy with 58% efficiency. -High-voltage power lines from the power plant to your house convey electricity with 92% efficiency. -The electric kettle converts electrical energy to thermal energy in the water with 85% efficiency (the other 15% heats up the kettle itself). -The stove…arrow_forwardMillikan Oil Drop Lab 5. Use the zoomed in image to measure the radius of the droplet. Take note that the units on the scale are in nanometers (nm), 1 nm = 10-9 m. Record the droplet radius and the 'AV between plates' values in Data Table 1 below. You are viewing the drop that is in Equilibrium 6. Repeat this process for ten (10) more droplets that are at rest. It is Measure the radius of the drop recommended that this table be recreated in a spreadsheet utility like MS Excel or Google Sheets. The oil density is 900 kg/m^3 Data Table 1. Raw Data Calculate the Volume and Mass of the drop Droplet radius AV between Calculate the Fg on the drop Run plates" UNITS! Set Fe = Fg --- 600 500 400 300 200 100 100 200 300 400 500 600 The capacitor plates are 3.0 mm apart Droplet radius AV The AV between plates is 15.0 V Volume Mss Weight E-field Run between plates' V mg E Calculate the Electric Field between the plates. JNITS! Find the charge on the oil drop. 1 scale in nm Return to Main Data…arrow_forward
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