At what time t does the direction of motion of the particle change from right to left? Thus the particle changes directions exactly once at t=3 seconds. The acceleration is the first derivative of the velocity. Hence, to get the velocity from the acceleration requires integration in time. Is it possible to go a negative […]
How do you know if transformation is successful?
How do you know if transformation is successful? How can you tell if a transformation experiment has been successful? If transformation is successful, the DNA will be integrated into one of the cell’s chromosomes. What is the purpose of bacterial transformation? Bacterial transformation is a key step in molecular cloning, the goal of which is […]
What are the disadvantages of a refracting telescope?
What are the disadvantages of a refracting telescope? Disadvantages: Very high initial cost relative to reflector. A certain amount of secondary spectrum (chromatic aberration) unavoidable (reflector completely free of this) The colours cannot focus at one point. Long focal ratios can mean that the instrument is cumbersome. Are refractors better than reflectors? Refractor telescopes use […]
What gas is not found in the atmosphere?
What gas is not found in the atmosphere? Radon is a radioactive element and is not found in the atmosphere. It is found in rocks containing uranium ores and is produced by the radioactive decay of radium. Why is hydrogen gas not found in the atmosphere? But the Earth’s atmosphere is almost totally lacking in […]
How long does a sandwich last in a lunchbox?
Which stainless steel is not magnetic?
Which stainless steel is not magnetic? Austenitic Is 430 stainless steel any good? All ferritic grades, such as stainless steel grade 430, have excellent stress corrosion cracking resistance. Grade 430 has good corrosion resistance to numerous substances, such as certain organic acids and nitric acid. Its pitting and crevice corrosion resistance is quite similar to […]
What is the safest way to change direction in the city?
What is the formula of Karl Pearson coefficient of correlation?
What is the formula of Karl Pearson coefficient of correlation? The Pearson correlation coefficient (named for Karl Pearson) can be used to summarize the strength of the linear relationship between two data samples. The Pearson’s correlation coefficient is calculated as the covariance of the two variables divided by the product of the standard deviation of […]
How did they convince Templeton to help Wilbur?
How did they convince Templeton to help Wilbur? How did the sheep convince Templeton to help save Wilbur? The sheep told Templeton that he could have any insects that were caught in Charlotte’s web. The sheep told Templeton that it would make all the animals happy. The sheep told Templeton that he could have an […]
What occurs when a country sells more than it buys from other countries?
What occurs when a country sells more than it buys from other countries? We determine a country’s balance of trade by subtracting the value of its imports from the value of its exports. If a country sells more products than it buys, it has a favorable balance, called a trade surplus. If it buys more […]