Category: Physics

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when a body is in rest it will be in rest when it is in motion it will be in motion unless or until affected by an external force .

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Using the website: https://phet.colorado.edu/sims/html/energy-skate-park/latest/energy-skate-park_en.html
Following completion of the simulation, write a 260- to 350-word response to the following:
Briefly describe what you did during the simulation.
What did you observe?
What additional questions do you have about energy storage, transfer, and conservation?
How are your observations related to the reading from this week? Pick at least two specific ideas to discuss.
How did this simulation contribute to your understanding of energy as a cross cutting concept throughout various scientific disciplines?

Generally, TheThere are three types of variables as given below, 1) Dependent Variable 2) Independent Variable 3) Controlled Variable

In engineering practice, civil works may be executed by the following but not limited to the types of contracts here under:
a. Measurement contract
b. Turnkey contract
c. Design and build contract
Briefly explain what each of the above types of contract entails.
As a Chief Officer responsible for roads and public works in a county government, which one of these types of contracts would you recommend for construction of a new road? Give reasons why.
ill List any three (3) duties of a resident engineer deployed on a dam project contract under FIDIC conditions.

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Need to complete assignment 2-4 typed out and formatted. Number of pages is dependent on how long each question takes to type out. See attachment for assignment questions.

This week’s lab reinforced what you learned about radioactive decay. You were able to study a radioactive sample of rock to learn about types of decay, decay series, and half-life. You learned how to balance nuclear decay equations using nuclide notation and how to calculate the half-life of a radioisotope. Your knowledge of these concepts helped you identify the radioactive sample of rock you found after the meteor crashed to Earth.
When you are satisfied with your work in the lab, complete the Introduction to Radioactive Decay Lab Report.

Part 1: Motion with constant velocity
1. Through a web browser, navigate to http://phet.colorado.edu/en/simulation/moving-man and start the simulation. There are two tabs for this simulation, called “Introduction” and “Charts.” For today’s activity, you will need only the “Introduction” tab. Play with the controls of the simulation to get used to the controls.
2. Reset all of the man’s values to zero.
3. Using the position slider, set the man to stand near the tree. Give him a velocity of 1.2 m/s (and an
acceleration of 0).
4. Click to start the man in motion until he hits the wall, then hit to stop recording.
5. Use the playback feature to answer these questions.
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