10 Tips to study at exam time Essays

10 Tips to study at exam time Essays 10 Tips to study at exam time Essay 10 Tips to study at exam time Essay Examination periods bring head to students, but to all, there are some techniques that make them more bearable. Here we show you some tips that we hope you find them useful. Cheer up! Write by hand on paper: Write down what you’re trying to study for remember more easily. Research on the subject says that the act of writing produces the feedback of the brain, resulting in a motor memory which makes it easier to remember the long-term information. Typing or voice recording have the same result, so, even if it takes longer it is the best you can do. Move! Believe it or not, the place where you study can also produce different effects in studies. If you’ve been studying in your room, move to the kitchen table or scroll to the library. It can help you keep a clear mind, plus improved. Try meditation: It is scientifically proven that meditation improves test results: a recent study by the University of California, Santa Barbara specifically states that many college students improved their capacity to face the exams through meditation, while another study showed students who meditated before a conference got better on the test that was conducted after the conference that students who had not meditated. During the weeks before the exam, you have to try to sit quietly and focus, making breathing paused for 5 minutes a day, morning and evening, to improve concentration and clear the mind. Take a break: Study more it does not necessarily mean better study: Studies have shown that taking a break every 10 minutes to walk can help improve your concentration up to two hours later. Test yourself: Be tested one / a / herself can be an effective way to alleviate nerves exist before an exam and review those skills that we have forgotten. Research shows us that active study methods are more effective than other strategies (such summarize or underline). Drink plenty of water: This is very important: if you took too much coffee or energy drinks, something that is often used during exam periods, and have a dehydrating effect on our body, we should always have a water bottle handy when you are studying. Dehydration (even mild) can impair cognitive function and mental performance. Do not overcrowd: study everything the day before, it can seem a sure way to gain the knowledge, that you is entirely clear, but it is actually counterproductive, not only will you be exhausted when you get to review but will be tired and do not Wing will remember everything perfectly possible, like you’re rested. There is no quick solution to pass the exams, so our recommendation is to start to prepare a month before exams, at your own pace and time to rest the night before the test. Make a study group: Group study may be useful whenever you choose the right people and you focus on the notes. Try to limit the group to a maximum of 3 or 4 members and making a list of things you are going to study each time you are left. Divide and conquer: Not all tests that do have the same difficulty, thus there is no need to always study the same way, or given equal time to all tests: you must evaluate the test yourself depending on the difficulty and knowledge you have, let them take a longer sections or other†¦ Listen to music to relax: Listening to classical music can help the mind to stay focused. Research has shown that workers who listen to music do their jobs more efficiently than those who do not way, so why not do the same with our studies?

Chapter 2 Motion in one dimension Essays - Classical Mechanics

Chapter 2 Motion in one dimension Essays - Classical Mechanics Chapter 2 Motion in one dimension Chapter 2 Motion in one dimension 1 / 4 Chapter 2: Motion in one dimension The study of motion and of physical concepts such as force and mass is called dynamics. The part of dynamics that describes motion without regard to its causes is called kinematics. The purpose of this chapter is to describe motion using the concepts of displacement, velocity, and acceleration. For the sake of simplicity, we begin with the study of 1-dimensional motion. 1) Displacement Motion involves the displacement of an object from one place in space and time to another. Describing the motion requires some convenient coordinate system and a specified origin. A frame of reference is a choice of coordinate axes that defines the starting point for measuring any quantity. Ex: Consider a body moving in 1-dimension; a train traveling down a straight railroad track: The x-coordinate of the train at any time describes its position in space. The displacement of an object is defined as its change in position, and is given by: SI unit: meter (m) where the initial position of the object is labeled and the final position is . Note: The displacement of an object is not the same as the distance it travels: when you toss a ball 1 m up and you catch it; the displacement is zero but the distance covered by the ball is 2 m. Chapter 2 Motion in one dimension 2 / 4 2) Velocity 2.1) Speed vs velocity In day-to-day usage, the terms speed and velocity are interchangeable. In physics, however, theres a clear distinction between them: Speed is a scalar quantity, having only magnitude, while velocity is a vector, having both magnitude and direction. 2.2) Average speed The average speed of an object over a given time interval is defined as the total distance traveled divided by the total time elapsed: Average speed is always positive. 2.3) Average velocity a) Definition The average velocity during a time interval t is the displacement divided by t : The average velocity of an object in one dimension can be either positive or negative, depending on the sign of the displacement. Example 1: If you run from x = 0 m to x = 25 m and back to your starting point in a time interval of 5 s. Compare your average speed with your average velocity. 2.4) Instantaneous velocity Average velocity doesnt take into account the details of what happens during an interval of time. To do so, we use the concept of instantaneous velocity. The instantaneous velocity is the limit of the average velocity as the time interval becomes infinitesimally small: SI unit: (m/s) 1 m/s = 3.6 km/h. SI unit: (m/s) SI unit: (m/s) Chapter 2 Motion in one dimension 3 / 4 3) Acceleration The changing of an objects velocity with time is called acceleration. The instantaneous acceleration is given by: 4) One dimensional Motion with constant velocity For a 1-D motion with constant velocity, the kinematic equation of motion is given by: 5) One dimensional Motion with constant acceleration For a 1-D motion with constant acceleration, the Kinematics equations are: We can also use: Example 2: A race car starting from rest accelerates at a constant rate of 5 m/s. 1) What is the velocity of the car after it has traveled 30.5 m? 2) How much time has elapsed? 3) Calculate the average velocity two different ways. Example 3: A typical jetliner lands at a speed of 71.5 m/s and decelerates at the rate of 4.47 m/s. If the plane travels at a constant speed of 71.5 m/s for 1.00 s after landing before applying the brakes, what is the total displacement of the aircraft between touchdown on the runway and coming to rest? 6) Freely falling objects A freely falling object is any object moving freely under the influence of gravity alone, regardless of its initial motion. Ex: Objects thrown upward, downward or released from rest. If we neglect air resistance and assume that the free-fall acceleration doesnt vary with altitude over short vertical distances, then the motion of a freely falling object is the same as motion in one dimension under constant acceleration. If we choose the up-direction as the +y-direction: SI unit: (m/s2 ) for constant a Chapter 2 Motion in one dimension 4 / 4 The kinematics equations of motion with the y-variable are: Example 4: A stone is thrown from the top of a building with an initial velocity of straight upward, at an initial height of above the ground. The stone just misses the edge of the roof on its way down, as shown in the figure. Neglect air drag. Determine: 1) the