It takes 3 half-lives:
1. 1000 -> 500
2. 500 -> 250
3. 250 ->125
I'm not sure about the Virginia thing so good luck!
And congratulations on being my first answer-person!!
I think it’s c) a transverse wave is made of particles that move perpendicular to the motion of the wave
Answer:
Explanation:
I got the same thing. So, i don't know but good luck
L = length of side of square = 0.400 m
d = length of the diagonal
using Pythagorean theorem
d = sqrt(L² + L²)
d = sqrt(2L²)
d = sqrt(2) L
r = distance of each small sphere from the center
from the diagram , we see that
2r = d
hence r = d/2
r = sqrt(2) L/2
r = L/sqrt(2)
moment of inertia is given as
I = m r²
total moment of inertia of four spheres is given as
I' = 4 I
I' = 4 m r²
I' = 4 m ( L/sqrt(2))²
I' = 4 mL²/2
I' = 2 mL²
inserting the values
I' = 2 (0.2) (0.4)²
I' = 0.064 kgm²
Answer:
299792458 meters per second (approximately 300000 km/s or 186000 mi/s)
Explanation:
The speed of light in vacuum, commonly denoted c, is a universal physical constant that is important in many areas of physics. Its exact value is defined as 299792458 meters per second (approximately 300000 km/s or 186000 mi/s).[Note 3] According to the special theory of relativity, c is the upper limit for the speed at which conventional matter, energy or any signal carrying information can travel through space.