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BrandyBoy72

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  1. BrandyBoy72

    Damage

    By BrandyBoy72,

    You may have heard before that potential energy can be described as the amount of damage something can do. Mr. Powlin gave us the example last year of something with a greater mass or speed will do more 'damage'. It should be also noted that the area which is affected by the force will determine the 'damage' and the duration of the impact. Also how the force is distributed into the object receiving the force. 
    For example, a skier who weighs 150 lbs going 20 mph can lessen the damage of a fall by landing over a large surface area by spreading out, landing on his side rather than on an outstretched arm.
    Injury (damage) can also be prevented by channeling the impact through a medium which will disperse the force (a helmet).
    By going to the top of that hill you are increasing your potential energy, aka, increasing your potential for damage/injury, but that can be watered down by reducing speed, wearing a helmet, and of course: falling correctly.
  2. BrandyBoy72
    Video 1: “Beliefs That Make You Fail… Or Succeed”
    Beliefs that make you stupid:
    a)
    1. Learning is fast
    2. Knowledge is composed of isolated facts
    3. Being good in a subject is a matter of inborn talent
    4. I’m really good at multitasking

    Which of these beliefs resonates with me?
    I sometimes think that I can learn things really quickly, that I don’t need a lot of time, or as much time as someone else to understand a subject.
     
    c)
    Metacognition: A student’s awareness of their level of understanding of a topic.
     
    Video 2: “What Students Should Understand About How People Learn”
     
    a)
    What is the most important factor in successful learning?
    1.  The intention and desire to learn
    2. Paying close attention to the material as you study
    3. Learning in a way that matches your own learning style
    4. The time you spend studying
    5. What you think about while studying

    Deep Processing: Really understanding a topic by connecting new ideas you learn to prior knowledge of that topic and making the learning experience unique to you, helping you to have a better understanding of a topic.
     
    c)
    Things that help learning:
    1.  Minimising distractions; maximising focus: It is hard for me to work in a room full of people or if the environment I am in is dirty, so I need a neat quiet place to work efficiently.
    2. Developing accurate metacognition: For me, actually think about what I am learning and doing rather than just doing it to get it done.
    3. Deep, appropriate processing of critical concepts: Think about things in the way they were meant to be used, If you only have to memorise something, then memorise it.
    4. Practicing retrieval and application: Make sure I can recall facts and actually know how to use what I know, which I feel I can do.




     
    Video 3: “Cognitive Principles for Optimising Learning”

     
    a)
    1. Elaboration - not being vague; relate beyond yourself; association: Take better notes that aren’t just keywords without definitions or connections to other things.
    2. Distinctiveness - set unique concepts apart from others: Make sure to know the differences between different equations and what they are used for.
    3. Personal - relate what you are learning to your own life: this sounds like what we will be doing in the blog posts, sounds like fun
    4. Appropriate retrieval and application - use what you learn in specific and deliberate ways: when working on problems know what is needed to complete them.
    5. Automaticity - practice something so you can do it without conscious effort: remember equations so I don’t have to constantly go back to the reference table
    6. Overlearning - study beyond the classroom, knowing information to where it can be recalled easily and quickly: learn the reference table
     
    Video 4: “Putting the Principles for Optimising Learning into Practice”

     
    a)
    1. What is metacognition? Awareness of your own learning and knowledge
    2. In the video how did the teacher test for metacognition? He compared the amount of questions the students thought they would get correct to the amount they actually did.
    3. How does poor metacognition hurt academic success? People can think they know something, so they don’t practice it and don’t get better.
    4. Why would metacognition that was good in high school be bad for college? College requires a higher understanding of topics and not just quick recollection of facts.
    5. What are differences between shallow and deep processing? Shallow processing would be if you memorize isolated facts, when deep processing compares topics to one another.
    6. Name a task you already do where you use deep processing - I use this in mathematics to use what I already know to understand a new topic.
     

    How do the tips for taking notes in class apply to video lessons?
    You have to take notes on the video lessons, it is easy to just get caught up in the talking and not think about what is actually being said. If you don’t take notes and use deep processing then it is very likely that a topic you are learning will not stick with you.




     
    Video 5: “I Blew the Exam, Now What?”
     
     
    a)
    What should you avoid if an exam goes poorly?
    Avoid Panicking or going into denial
     

    What should you do if an exam goes poorly?
    Be honest with yourself and examine how you prepared for the exam. Review the exam. Compare errors with notes taken. Talk to your professor. Examine study strategies. Develop a plan.
     
    c)
    Helpful strategies to raise your grade:
    1.  Commit time and effort
    2. Minimize distractions
    3. Attend class
    4. Set realistic goals
    5.  Don’t begin to slide
    6. Don’t give away points
  3. BrandyBoy72

    Overheating

    By BrandyBoy72,

    A common use of a brush motor is in a fan, for example the type that is used to keep my laptop from overheating. But what exactly is that preventing, and what does overheating do to a system such as a laptop?
    The fan helps to keep internal units cooled down, heat is created when there is resistance in the different hardware inside the computer. With all the units preforming very close to each other, a lot of heat can be generated. This is why keeping any appliance that generates a lot of resistance should be turned off when not in use, they are just draining unnecessary power and can create enough heat to cause a fire if given the proper (or rather improper) conditions. The fans used by such appliances serves to cool off the internal devices to a certain extent, and don't actually create that much heat themselves, which is useful.
    There are alternative ways of keeping devices cooled down, fans are one type, but there are also liquid cooling systems which are less common and even a phase change unit, which uses a cooling technique similar to a refrigerator.
  4. BrandyBoy72
    What exactly happens when electricity flows through a person, how does it effect their body and how can these effects be measured?
    People are conductive, electricity will flow through a person if able, and can do harm to a persons body, including burns and upsetting the heart. Small enough voltages might not conduct through your skin, the most susceptible place on your body is probably your tongue. 
    In terms of Amps, 1 mA of current through your body would only cause tingling, but upwards of 75 mA could cause ventricular fibrillation, an unsteady heart rhythm that can lead to death. Amps of 1500 mA can start to burn internal organs. However amperage alone cannot determine whether a shock is deadly, factors like where the current flows through on your body are important too, this is why a small shock from an electrical shock can kill you if it travels through your heart, but a bolt of lightning can leave a person with only burns if it travels through the skin and into the ground.

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