Answer:
- Scientific question: does life exist on other planets?
- Non-scientific question: there are aliens that look like people?
Explanation:
A scientific question is a coherent question that can be used to develop a scientific hypothesis. Thus, a scientific question must be testable, verifiable, measurable and relevant to the topic of study. In the scientific method, the hypothesis is subsequently tested by experimental or observational procedures, where the results can be used to understand some particular aspect of the real world. On the other hand, a non-scientific question is a light conjecture which cannot be proved by using the scientific method.
Answer:
Answer: II and IV
Explanation: Flammability and the ability to rust are chemical properties because they change an object. I, III, and V are physical properties because it doesn't change the object's composition. This includes weight, the change in matter (solid to liquid), or change in volume.
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Explanation:
High-strength bolts are used in the construction of many steelstructures. For a 1-in.-nominal-diameter bolt the required minimumbolt tension is 47.25 kips. Assuming the coefficient of staticfriction to be 0.35, determine the required couple that should beapplied to the bolt and nut. The mean diameter of the thread is0.94 in., and the lead id 0.125 in. Neglect friction between thenut and the washer, and assume the bolt to be square-threaded.
When the collision of gas particles and the volume of the gas stay the same it causes a chemical.
