Is the scientific method a hypothesis? How do you know?
What will be an ideal response?
No, the scientific method is a process of which a hypothesis is one piece.
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The Inquisition condemned Galileo for heresy in 1616
a. True b. False Indicate whether the statement is true or false
A high-mass star dies more violently than a low-mass star because
A) it must always end up as a black hole. B) it generates more heat and its core eventually collapses very suddenly. C) it cannot fuse elements heavier than carbon. D) gravity is weakened by its high luminosity. E) it is most often found as part of a binary system.
The specific of ice is 2.10 kJ/kg
the heat of fusion for ice at 0
is 333.7 kJ/kg, the specific heat of water 4.186 kJ/kg
and the heat of vaporization of water at 100
is 2,256 kJ/kg. What is the final equilibrium temperature when 5.00 grams of ice at -15.0
is mixed with 40.0 grams of water at 75.0
?
A. 30.1
B. 28.3
C. 20.9
D. 18.6
E. 16.1
Two flanged shafts are connected by eight 18-mm bolts. The diam-eter of the bolt circle is 240 mm. The allowable shear stress in the bolts is 90 MPa. Ignore friction between the flange plates. The maximum value of torque T0 is approximately:
(A) 19 kN?m
(B) 22 kN?m
(C) 29 kN?m
(D) 37 kN?m