A cardinal feature of the Scientific Method is that: a. theories must be supported by experimental evidence b. the causes of any observations should be derived from first principles c. relationships should be expressed using mathematical formulae d. explanations of phenomena must seem clear and logical
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A cardinal feature of the Scientific Method is that:
theories must be supported by experimental evidence
the causes of any observations should be derived from first principles
relationships should be expressed using mathematical formulae
explanations of phenomena must seem clear and logical
Step by step
Solved in 3 steps
- In the process of using the scientific method, a researcher: O Directly tests both the null and alternative hypotheses. O Directly tests only the alternative hypothesis because this is the hypothesis of interest. O Directly tests only the null hypothesis because this is the hypothesis of interest. O Directly tests only the null hypothesis because the null hypothesis leads to a specific prediction that can be compared with data. O Can not directly test either hypothesis.In scientific subject work, what are the three basic steps in building an ideal model?The following data sets are the length measurements of a raw material. The actual length of the part is supposed to be 3.2 mm. Which sets) do you prefer to the others? Briefly explain.HINT: Check the accuracy and the precision of each data set.Data Set 1: 2.91, 3.00, 3.50, 2.85, 3.22, 3.15, 3.49, 2.90, 3.27, 3.15Data Set I1: 3.13, 3.22, 3.19, 4.17, 3.21, 2.62, 3.25, 2.80, 2.40, 3.81Data Set I: 3.24. 3.18. 3.22. 3.20. 3.17, 3.23, 3.19, 3.20, 3.16, 3.24Data Set IV: 2.90. 3.00. 2.92. 2.95. 2.93. 2.97. 2.94. 2.99. 2.96, 3.00 Please donot provide solution in image format and it should be in step by step format and provide fast solution
- How many correct experiments do we need to prove a theory? Explain.The sides of a small rectangular box are measured to be (1.90 ± 0.01) cm, (2.00 ± 0.02) cm, and (3.1 ± 0.1) cm long. Calculate its volume and uncertainty in cm³. a. Its volume is b. The uncertainty on its volume is cm³. cm³.Density Here is a simple problem. Then we'll do one that requires a little more thought. The shape of a city is roughly a circle with a radius of 5 miles. If the population density for the city is 10,000 people per square mile, what is the population of the city? 11111 Now here's a problem that will stretch your problem solving skills. This time the city is also in the shape of a circle, but the population density is higher towards the center of the city and lower towards the outskirts. The numbers in the diagram represent miles. The population density is 10,000 people per square mile in the inner circle. In the first ring out from the center the density is 8,000 people per square mile, the second ring out it's 6,000, in the third ring out it's 4,000 and in the largest ring it's only 2,000 people per square mile. Finally, here is a three dimensional problem. Density is defined as weight per unit of volume. So which weighs more, a ball of zinc with a radius of 3 cm, or a ball of…
- A 10. Which of the following is an accurate distinction between a scientific theory and a hypothesis? A hypothesis is widely accepted by the scientific community. O A scientific theory has been tested many times, and been shown to be accurate. O A scientific theory is an educated guess, but a hypothesis is not. O A scientific theory has no supporting evidence to back it up. New version available! (3.0.245) GE1. What are the application of physics in the field of medicine? 2. What are the theories in physics that are applied in medical practice? Answer 1 and 2. ThanksOne mole of Gold (Au) atom has a mass of 197 g. We know that the density of gold is 19.30 g/cm3 in room temperature. Using those numbers, answer the following questions: a) What is the mass of a single gold atom in kg? b) Assume that gold atoms sit in a perfect cubic crystal structure. Estimate the distance between two gold atoms in meters. c) If we have a gold cube of 6 cm on each side, how many atoms can we fit along the edge of each side of the cube? d) What would be the mass, in kilograms, of the gold cube we discussed in part (c) (measuring 6 cm on each side)?
- Express the answer in standard scientific notation with the appropriate number of significant figures. a. The mass of a blue whale, 180000 kg. ____ x10 ^___kg b. The diameter of a helium nucleus, 0.000 000 000 000 003 8 m. ____ x10 ^___mCannot be hand-written, all steps must be typed out Must include these 5 steps of problem solving which include: 1. Visualize the problem 2. Describe the problem in physics terms 3. Plan a solution 4. Execute the plan 5. Check and evaluateTrue or false 1. The unit-factor method is used as a validity tool in deriving equations. 2. Kinetic energy is dependent on the mass and velocity of an object. 3. Acceleration is speed with direction. 4. Physical change in matter alters its appearance and identity. 5. Height is the greatest measurement of a 3D object. 6. The acceleration of an object is dependent on the net force acting on an object. 7. The English system of measurement is based on the power of ten. 8. All objects fall at the same time. 9. Temperature is the flow of energy from a hot area to a cold area. 10. The position of the object increases potential energy.