Answer:
A. Thickness and temperature
Explanation:
Answer: M = 42.553·
kg
Explanation: A orbit where a body remains traveling around a gravitating mass at constant radius is called Circular Orbit. Although in reality the orbit is more like an ellipse, the circular orbit is a good approximation to the real one.
In that system, it is possible to determine the velocity needed to maintain the orbit. The formula is: v =
, where:
v is velocity;
G is the gravitational constant( = 6.67·
)
M is the mass of the gravitating mass;
r is the distance between the center of the massive object and the orbiting object;
But, this question is asking for the mass M, so, rearraging:


Transforming light-years in metres and dividing by 2 to find the radius:
r = (15.9.461 x 10¹⁵)·
= 70.9575
M = 
M = 42.553.
kg
The mass of the massive object at the center of the ring is 42.553.
kg.
Oil flows upward in the wick of a lantern because of the liquid property called <span> capillarity.
</span>Final answer: D<span>
</span>
<span>The relationship between a cathode and an anode involves:
</span>
A. electrons.
Negatively ions which have excess electrons move to the Anode, while Postively charged ions which have less electrons move to the Cathode.
Answer:
C
Explanation:
Nuclear waste must be safely stored for many years because it is bad to store that much nuclear waste.