Ruling out rival hypotheses, Findings consistent with several hypotheses
require additional research to eliminate these hypotheses. More five principles
of critical thinking are: (1.) Correlation vs. Causation, the fact that two
things are associated with each other doesn’t mean that one causes the other.
(2.) Replicability, a finding must be capable of being duplicated by
independent researchers following the same recipe. (3.) Occam’s Razor,
if two hypotheses explain a phenomenon equally well, we should generally select
the simpler one. (4.) Falsifiability, claims
must be capable of being disproved. (5.) Extraordinary Claims, the more a
claim contradicts what we already know, the more persuasive the evidence must
be before we should accept it.
Answer: PE = 800j, KE = 800J
Explanation:
To calculate the potential energy, we use the formula
Potential Energy = Mgh
M = 20kg, g = 10m/sˆ2 , h = 4m
=20 × 10 × 4
=800J
At the maximum height S = 4 and the initial velocity u = 0 The acceleration g = 10m/sˆ2
Using the third equation of motion
vˆ2 = uˆ2 + 2as
= 0ˆ2 + 2 × 10 × 4
vˆ2 = 80
Kinetic Energy (KE) is given by
KE = ½ mvˆ2
= ½ × 20 × 80
=800J
I would say B
Hope you got this right :)
Intrusive igneous rocks include gabbro, granite, and diorite. Each rock differs in that it was created by a separate silica-containing magma.
Despite having different silica concentrations, granite, diorite, and gabbro are all products of magmas. Gabbro is a typical rock that contains 45% to 55% silica. With a silica content ranging from 55% to 65%, diorite is a middle-ground rock. With a silica concentration of more than 65%, granite is an acidic rock.
The most common elements in the Earth's crust, silicon and oxygen, are combined to form silica, also known as silicon dioxide (SiO 2). Silica, which makes up the majority of more than 95 percent of all known rocks, makes up 59 percent of the Earth's crust. Quartz, which is by far the most prevalent crystalline variety of silica, tridymite, and cristobalite are the other two.
Learn more about silica compositions here
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