Answer:
<em>The greatest pressure is 2178 Pa</em>
Explanation:
<u>Pressure</u>
It's the force applied perpendicular to the surface of an object per unit area over which the force is distributed.
If F is the force applied and A is the surface area, the pressure is calculated as:
The brick has dimensions of 25 cm by 9 cm by 5 cm. There are three possible areas of contact:
The brick has a mass of m=1000 g = 1 Kg and exerts a force equal to its weight when placed on a flat surface, thus:
F = m.g = 1 * 9.8 = 9.8 N
The greatest possible pressure will occur when the area is the least possible 
, since the pressure and the area are inversely proportional, thus:
The greatest pressure is 2178 Pa
Answer:
B, to predict star count
Explanation:
the rest can be done with rulers, Einstein cans and public surveys, we can't predict how many stars there will be, but we can take pictures of them instead
For the water could use a silicon to measure that and for magnesium you can use a scale
you would pour the distilled water in the silicon glass thingy til you reach 25ml and then put 2.5 grams of magnesium on the scale
i really hope this helps
Solution :
Energy of photon, E = 6.7 eV
E = 
joule
Kinetic energy, 
Kinetic energy at high speeds
r - 1 = 7130
r = 7130 + 1
r = 7131
![$v^2=C^2\left[1-\left(\frac{1}{7131}\right)^2\right]$](https://tex.z-dn.net/?f=%24v%5E2%3DC%5E2%5Cleft%5B1-%5Cleft%28%5Cfrac%7B1%7D%7B7131%7D%5Cright%29%5E2%5Cright%5D%24)
Δ = 1 - 0.99999999017
= 0.00000000933
Relative mass, 
kg
Blue, blue-white, Yellow-white, yellow, yellow-orange, and red. Hope this helps.
