The formal operational stage starts at around age twelve and keeps going into adulthood. Amid this time, individuals build up the capacity to consider conceptual ideas. Abilities, for example, intelligent thought, deductive thinking, and precise arranging likewise rise amid this stage.
Your question asks what a scientific law is.
Your answer would be B). What scientists expect will always happen under particular circumstances
A scientific law is something that will always happen, it is mostly like a repeat when doing a experiment with certain factors in place. This is also known as a "natural law" because something will naturally happen when it is enacted with the same factors for multiple "trials". This "scientific law" will allow scientist to predict what would happen during other multiple trials that are conducted. Concise data would be received from these trials.
An example of a scientific law is Newton's law of gravitation.
Therefore, your answer would be B.
Answer:
Explanation:
Potential energy, which is the energy a body assumes at a position, can be calculated using the formula:
P.E = m × g × h
Where;
m = mass (kg)
g = acceleration due to gravity (10m/s²)
h = height (m)
Answer:
(a) when the distance x is 0.3 m, the boundary layer thickness is 0.0055 m = 5.5 mm.
(b) when the distance x is 3 m, the boundary layer thickness is 0.0174 m = 17.4 mm.
(c) when the distance x is 30 m, the boundary layer thickness is 0.055 m = 55 mm.
Explanation:
For a laminar flow:
;
where;
d is the boundary layer thickness = 11 mm
x is the distance from the leading edge = 1.2 m
C is a constant =?
<u>Part (a):</u> when x = 0.3m
d = C√x
= 0.010042 × √0.3
= 0.0055 m = 5.5 mm
<u>Part (b):</u> when x = 3.0 m
d = C√x
= 0.010042 × √3.0
= 0.0174 m = 17.4 mm
<u>Part (c):</u> when x = 30 m
d = C√x
= 0.010042 × √30
= 0.055 m = 55 mm
Answer:
0.614 nm
Explanation:
Energy of the nth state of one dimensional infinite wall is,
Given the energy to excite an electron from ground state to first excited state is,
And the Plank's constant is,
Mass of electron,
Now the energy will of a 1 dimensional infinite wall which excite an electron from ground state to first excited state will be,
Put all the variables in above equation and rearrange it for L.
Therefore the width of the box is 0.614 nm.