I believe that if you multiply 120 x 45 you would get 5,400 why? Because when a problem has "of" means to multiply.
So... the vacuum cleaner is 5,400 percent efficient :)
Sorry if it's wrong I'm only in fifth grade
Answer:
Image result for In covalent bonds what is being shared
A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
Explanation:
Answer:
Frequency = 2Hz
Explanation:
In simple harmonic motion,
Frequency is given by the formula;
f = (1/2π)√(k/m))
Where,
k is spring constant and
m is mass
Now, the question says there are 4 suspension springs with each having a spring constant of 47100 N/m. Thus, the total amount of spring constant will be;
K_total = 4 x 47100 N/m = 188,400 N/m
Thus, let's now find the frequency since we have m = 1190kg
f = (1/2π)√(k/m)
f = (1/2π)√(188400/1190)
f = (1/2π) x 12.5825
f = 0.159149 x 12.5825 = 2 Hz
<span>If two of the masses are at (0, 0) and (L, 0), by symmetry the x-coordinate of the third mass must be L/2, and then by the Pythagorean theorem its y-coordinate must be L(âš3)/2. Thus the position of the third mass is (L/2, L(âš3)/2).
Let each mass be m and C be the position of its center of mass.
Then C = (1/(3m)) (m(0, 0) + m(L, 0) + m(L/2, L(âš3)/2)).
= (1/3) (3L/2, L(âš3)/2).
= (L/2, L(âš3)/6).
That is, X_c = L/2 and Y_c = L(âš3)/6.</span>