Why are steam engines inefficient? Steam engines are extremely inefficient, wasting around 80–90 percent of all the energy they produce from coal. That means they have to burn enormous amounts of coal to produce useful amounts of power. It’s inefficient because energy is wasted as the heat and steam travel from the fire, via the […]
Do I need to discharge a capacitor?
Do I need to discharge a capacitor? You must discharge the capacitors before working on power supply circuits so you won’t get shocked. There are three different ways to discharge large filter capacitors in a power supply: with a screwdriver, the leads of a socketed 100 watt light bulb, and the leads of a high-wattage […]
What is your availability start?
What is your availability start? Applicants are often asked what date they are available to start work if they were to be hired. The most common time frame for starting a new position is two weeks after you have accepted the job offer. Should I put my availability on my resume? 12) Availability Save the […]
Is NBA older than NFL?
What is the source of the energy released in fission and fusion reactions?
What is the source of the energy released in fission and fusion reactions? Nuclear Fusion reactions power the Sun and other stars. In a fusion reaction, two light nuclei merge to form a single heavier nucleus. The process releases energy because the total mass of the resulting single nucleus is less than the mass of […]
When you rub the two balloons against your hair what will happen if you bring the two balloons near each other?
When you rub the two balloons against your hair what will happen if you bring the two balloons near each other? Rubbing the balloon onto your hair or onto the wool fabric adds electrons to the balloon and causes the balloon to become negatively charged. Like charges repel (the two balloons, once charged, will move […]
How many joules is lethal?
How many joules is lethal? 50 Joules How many joules can a human punch? 400 joules How many joules can break a bone? 375 Joules How many joules does it take to crack a skull? We scanned the models after impact and compared the resulting fractures to the victim’s skull. The energy necessary for the […]
Who is the father of correlation?
Who is the father of correlation? Sir Francis Galton What is the formula of Karl Pearson coefficient of skewness? Step 1: Subtract the mode from the mean: 70.5 – 85 = -14.5. Step 2: Divide by the standard deviation: -14.5 / 19.33 = -0.75. Pearson’s Coefficient of Skewness #2 (Median): Step 1: Subtract the median […]
Is Boron 11 stable or unstable?
Is Boron 11 stable or unstable? Boron 11 Metal (Boron-11) is a stable (non-radioactive) isotope of Boron. It is both naturally occurring and a produced by fission. What is the half life of boron-10? 20.20 milliseconds Why is boron 9 not stable? Returning to our boron example, with only 4 neutrons, boron-9 is unstable, and […]
Where is an 18 wheeler blind spots?
Where is an 18 wheeler blind spots? Because of the massive size of 18-wheelers and other big commercial trucks, they have many blind spots. For instance, 18-wheelers have a blind spot at the front-end of the truck, on both sides; just below and behind the driver-side window; and directly behind the truck. What are blind […]