Answer:
10⁴¹ s quark top lives have been in the history of the universe.
Explanation:
You need to determine how many quark top lives there have been in the history of the universe, that is, what is the age of the universe divided by the lifetime of a top quark. Expressed in a formula, this is:
Yo know that the "Age of the universe" is 100,000,000,000,000,000 which can also be expressed as 10¹⁷ s
.
You also know that the "Lifetime of a top quark" is 0.000000000000000000000001 which can also be expressed as 10⁻²⁴ s.
Then
Recalling that the result of dividing two powers of the same base is another power with the same base where the exponent is the subtraction of the initial exponents, it is possible to calculate this division as follows:
<u><em>t=10⁴¹ s</em></u>
So <u><em>10⁴¹ s quark top lives have been in the history of the universe.</em></u>
Answer:
cause copper no d-electrons
Answer:
Explanation:
first ball rolls on the porch by total distance
Then again it will move on horizontal floor
also in vertical direction it will drop down
so we have
so magnitude of net displacement of the ball is given as
Answer: an isolated system
Explanation:
Answer:
<em>The gauge pressure at this height is 304.11 kPa</em>
<em></em>
Explanation:
Height of water is 31.0 m
We know that gauge pressure is the pressure by which a given pressure exceeds the atmospheric pressure. Normally, the absolute pressure due to this height of water would have been the atmospheric pressure plus the gauge pressure due to this height of water. In the case, we only consider the gauge pressure due to the height of water, since the atmospheric pressure is considered the datum pressure.
Gauge pressure of water = ρgh
where ρ is the density of water = 1000 kg/m^3
g is the acceleration due to gravity = 9.81 m/s^2
h is the height = 31.0 m
Gauge pressure of the water = 1000 x 9.81 x 31 = 304110 Pa = <em>304.11 kPa</em>