How do you know if something is accurate or precise? Accuracy is how close a value is to its true value. An example is how close an arrow gets to the bull’s-eye center. Precision is how repeatable a measurement is. An example is how close a second arrow is to the first one (regardless of […]
What are the different methods of contouring?
What are the different methods of contouring? There are two methods of locating contours: Direct method. Indirect method. Direct method- In direct method contour to be plotted is actually traced on the ground. Procedure- The work is started from BM and the level is set up at the centre of the area. What is contour […]
Which gas is formed when fuels are burned in air?
Which gas is formed when fuels are burned in air? Products formed during combustion of fossil fuels. The primary pollutants are Carbon Monoxide (CO), Carbon Dioxide (CO2), Sulfur (SO2), Nitrogen Dioxide (NOx), Nitric Oxide (N2O), Volatile organic compounds (VOCs), and Hydrocarbons (HCs). Can hydrocarbons have oxygen? Methane (CH 4start subscript, 4, end subscript), the simplest […]
Which of the following is a disadvantage of using hydrogen fuel cells?
Which of the following is a disadvantage of using hydrogen fuel cells? There are disadvantages to using hydrogen-oxygen fuel cells in cars. These include: hydrogen is in the gas state at room temperature and pressure, so it is difficult to store in the car. fuel cells and electric motors are less durable than petrol engines […]
What are the two kinds of substances?
What are the two kinds of substances? The two main types of pure substances are compounds and elements. They consist of a single type of particle or compound. What happens when you mix water and cornstarch? The cornstarch-and-water mixture creates a fluid that acts more like quicksand than water: applying force (squeezing or tapping it) […]
Did the Friendship 7 lose its heat shield?
Did the Friendship 7 lose its heat shield? After Glenn began his second orbit, Mission Control received a signal that the heat shield, designed to prevent the capsule from burning up during reentry, was loose. Although it could have been a faulty signal, Mission Control took no chances. The heat shield held. Does the Friendship […]
What is the best reason to ease into an exercise program?
What is the best reason to ease into an exercise program? Easing into an exercise program decreases the likelihood that it will lead to lifestyle changes. Is lung capacity a standard procedure True or false? False, During a medical screening, lung capacity testing is not a standard procedure. It’s important to match your exercise shoes […]
Do any constellations contain galaxies?
Do any constellations contain galaxies? Constellations contain stars that are easy to pick out in the night sky. Although single stars from other galaxies can’t be seen with ours eye alone, some galaxies and nebula can be. For example, the Andromeda galaxy is a collection of over 1 trillion stars approximately 2.5 million light-years away. […]
Do Congressmen have staff?
Do Congressmen have staff? Majority and minority members hire their own staff except on two select committees in each house—the Committee on Standards of Official Conduct and Permanent Select Committee on Intelligence in the House and the Select Committee on Ethics and Senate Select Committee on Intelligence in the Senate. Who are staffers? A staffer […]
What are three assumptions of the kinetic theory?
What are three assumptions of the kinetic theory? The simplest kinetic model is based on the assumptions that: (1) the gas is composed of a large number of identical molecules moving in random directions, separated by distances that are large compared with their size; (2) the molecules undergo perfectly elastic collisions (no energy loss) with […]