Physics, 14.01.2021 19:00 annahm3173
1. The appearance of the Sun each morning demonstrates four important assumptions scientists
make about the world:
• regularity (it happens over and over again)
• causality (there is a reason for it)
•measurability (it can be measured and verified)
predictability (its recurrence can be anticipated and predicted)
Choose another aspect of the physical world and describe how it fits with these assumptions.
•The changing of the four seasons and the basis that the seasons will forever repeat
2. Why can we never prove that a hypothesis is true?
•In science, a hypothesis is in effect an analogy. You are trying to create a mental model of a
real
world situation and you try to show that evidence from your experimental setup is
consistent.
3. Give an example of a scientific hypothesis. Explain how you would test it, and how it could be
falsified (proved untrue).
Answers: 2
Physics, 22.06.2019 02:30
Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.
Answers: 2
Physics, 22.06.2019 14:00
Una carga puntual de 3 x 10-6 c se coloca a 12 cm de una segunda carga puntual de - 1,5 x 10-6 c. calcular la magnitud fuerza eléctrica entre las cargas
Answers: 2
Physics, 22.06.2019 18:30
Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.
Answers: 1
1. The appearance of the Sun each morning demonstrates four important assumptions scientists
make a...
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