What force is used when you lift an object? gravitational potential energy Is it safer to push or pull a trolley? Putting the load on a trolley and pushing it is one way of avoiding carrying. So, when people push and pull instead of lifting and carrying, less effort is required, but there may still […]
What has 16 protons and 18 neutrons?
What has 16 protons and 18 neutrons? Sulfur – S Is beryllium expensive? BERYLLIUM IS A MATERIAL LIKE NO OTHER. Ninety-eight-percent pure beryllium is expensive, selling from $600 to $800 per pound prior to machining, so shops must understand its machining idiosyncracies to avoid scrapping progressively expensive parts. What’s the strongest alloy on earth? Steel […]
WHAT IS units in chemistry?
WHAT IS units in chemistry? Chemistry primarily uses five of the base units: the mole for amount, the kilogram for mass, the meter for length, the second for time, and the kelvin for temperature. The degree Celsius (oC) is also commonly used for temperature. What is the formula to convert kg to lbs? 1 Kilogram […]
What are the different stimuli?
What are the different stimuli? excited by three types of stimuli—mechanical, thermal, and chemical; some endings respond primarily to one type of stimulation, whereas other endings can detect all types. Chemical substances produced by the body that excite pain receptors include bradykinin, serotonin, and histamine. What are some examples of stimuli? Stimuli include: Irritants. Sights. […]
Do I need a whistle to kayak?
Why are unit tests useless?
Why are unit tests useless? Unit tests ossify the internal structure of the code. All the unit tests are suddenly rendered useless. Some test code may be reused but all in all the entire test suite has to be rewritten. This means that unit tests increase maintenance liabilities because they are less resilient against code […]
Which objective lens should you always use first when viewing a new slide?
Which objective lens should you always use first when viewing a new slide? 3. When focusing on a slide, ALWAYS start with either the 4X or 10X objective. Once you have the object in focus, then switch to the next higher power objective. Re-focus on the image and then switch to the next highest power. […]
How accurate are home DNA testing kits?
How accurate are home DNA testing kits? Since most of us aren’t geneticists, it can seem daunting. But here’s the bottom line: “Are home paternity tests accurate?” Yes! You can expect to see the exact same results for a home paternity test as you would for a legal, court-admissible test if all DNA samples submitted […]
What is the most important part of preparing for a presentation?
What is the most important part of preparing for a presentation? The introduction is the most important part of your presentation as it sets the tone for the entire presentation. Its primary purpose is to capture the attention of the audience, usually within the first 15 seconds. What are the factors that affect effective presentation? […]
Does the Earth accelerate towards you?
Does the Earth accelerate towards you? Earth accelerates towards you So the mass of the Earth relative to you is incredibly large. From Newton’s second law of motion we know that for a given force on an object the acceleration reduces as the mass of the object increases. However the Earth still accelerates towards you […]