Answer:

Explanation:
Radioactive decay behaves according to the law of exponential decay:

Where:




So we need to find the decay rate r. Let's find it using the equation and the data provide, but first, we need to convert the hours in days:

Now for
then:

Divide both sides by 100:

Take the natural logarithm of both sides:

Multiply both sides by -8/11:

Now we have found the rate decay r, let's find how many milligrams will remain after 59 hours (25/12 day):

Answer:
Space Launch System (SLS)
Explanation:
Space Launch System (SLS) is the United States Space Shuttle-derived heavy expendable launch vehicle being designed by NASA.
<u>-TheUnknownScientist</u><u> 72</u>
Answer:
There is an attractive force between the rod and sphere.
Explanation:
When negatively charged rod is placed close to the metal sphere then due to the electric field of the rod the opposite free charge of metal sphere comes closer to the rod on one surface
While similar charge in the metal sphere move away from the rod due to repulsion of electric field of rod
This temporary charge distribution of the metal sphere is known as induction
And since opposite charge on the metal surface comes closer to the metal sphere so here we can say that the rod will attract the metal sphere
so here correct answer will be
There is an attractive force between the rod and sphere.
Distance from the sun.
<span>The third law of planetary motion states that the square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit</span>. The semi-major axis is the distance from the sun to the epicenter of the ellipse (which would be the planet in question). So, the revolutionary period is directly related to the distance of the planet from the sun.