Answer:
B
Explanation:
Gravity is when objects are pulled down to earth
I would say that being imaginative in science means finding new ways to find or analyse the data, but which do not make the data false or which do not manipulate the data. Being imaginative in science should not cross the boundary of making the science not reliable
Being imaginative in pseudoscience could mean manipulating the data or even making experiments in such a way as to only obtaining specific data or throwing away certain data.
physically, it is still the same substance, just in a different form. Water turning into ice is a great example of a reversible physical change.
A) In order to find the centripetal acceleration, we need to apply the formula:
a = ω² · r
where
ω = angular velocity = (2π / T)
Let's transform the units of measurement:
T = 2.6×10⁸yr = 8.2×10¹⁵s
r = 3.0×10⁴ lyr = 2.8×10²⁰m
Therefore:
a = (2π / T)² · r
= (2π / 8.2×10¹⁵)² · 2.8×10²⁰
= 1.64 m/s²
B) The average speed can be calculated with the formula:
v = ω · r
= (2π / T) <span>· r
= </span>(2π / 8.2×10¹⁵) · <span>2.8×10²⁰
= 2.15</span>×10⁵ m/s
