How to Improve Your Public Speaking Skills free essay sample

Speaking Skills Public speaking skills are valuable both in your personal life and career. However, many people do not want to be a public speaker because they are not confident enough when they give a speech in front of people. These tips below can help you to become a better public speaker. First, pay attention of your stage presence when you are gluing your speech. Good public speakers appear confident, friendly, and enthusiastic.Confidence comes from hosing a topic you like and researching It well. Also, act confident until you feel confident. It can help you to reduce your anxiety. In Dalton, your enthusiasm will naturally follow when you enjoy your topic. Second. Your voice is the most important tool to employ as a public speaker. When you are giving your speech, vary the pitch and volume of your voice. It is the essential things to help the audience to understand your main point. We will write a custom essay sample on How to Improve Your Public Speaking Skills or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page If your voice is always sigh, you may hurt your audience ears. But if you voice is always low, your audience will miss your information. Third, use the appropriate body language. You can use it to deliver your message but not too much. If you are using your body language too much, then your audience will get distracted and they are paying attention to your body language more than your main Ideas. In addition, be aware of your facial expressions as well, they should match the message you are delivering.When you tell them a sad story, your mimic must synchronize with your story. Fourth, when it comes to public speaking, delivery is everything. Even if you have a great voice and good body language, your message will get lost if the audience cant easily follow what you say. Avoid sounds like um and ah during your speech, carefully articulate and pronounce your words, pause between ideas, all of this technique can be applied to maintain a good delivery for your speech.

Heat of Fusion Example Problem - Melting Ice

Heat of Fusion Example Problem - Melting Ice Heat of fusion is the amount of heat energy required to change the state of matter of a substance from a solid to a liquid. Its also known as enthalpy of fusion. Its units are usually Joules per gram (J/g) or calories per gram (cal/g). This example problem demonstrates how to calculate the amount of energy required to melt a sample of water ice. Key Takeaways: Heat of Fusion for Melting Ice Heat of fusion is the amount of energy in the form of heat that is needed to change the state of matter from a solid to a liquid (melting).The formula to calculate heat of fusion is: q m ·ÃŽâ€HfNote that the temperature does not actually change when matter changes state, so its not in the equation or needed for the calculation.Except for melting helium, heat of fusion is always a positive value. Heat of Fusion Problem - Melting Ice What is the heat in Joules required to melt 25 grams of ice? What is the heat in calories?Useful information: heat of fusion of water 334 J/g 80 cal/gSolution: In the problem, the heat of fusion is given. This isnt a number youre expected to know off the top of your head. There are chemistry tables that state common heat of fusion values.  To solve this problem, youll need the formula that relates heat energy to mass and heat of fusion:q m ·ÃŽâ€Hfwhereq heat energym massΔHf heat of fusion Keep in mind, temperature is not anywhere in the equation because it doesnt change when matter changes state. The equation is straightforward, so the key is to make sure youre using the right units for the answer. To get heat in Joules:q (25 g)x(334 J/g)q 8350 JIts just as easy to express the heat in terms of calories:q m ·ÃŽâ€Hfq (25 g)x(80 cal/g)q 2000 calAnswer:The amount of heat required to melt 25 grams of ice is 8350 Joules or 2000 calories. Note, heat of fusion should be a positive value (the exception is helium). If you get a negative number, check your math!