A. Six electrons
B. six protons
C. they are composed of two up quarks and one down quark.
Answer:
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Explanation:
Explanation:
The speed of light is 300,000,000 m/s. There are 8 zeros, so in scientific notation, the speed is 3×10⁸ m/s.
Answer:
r₂ = 4.43 r₁
Explanation:
To solve this exercise we must use Pascal's principle that the pressure at a point at a given depth is constant regardless of the body shape.
Let's use index 1 for the smallest plate and index 2 for the largest plate.
P₁ = P₂
pressure is defined
P = F / A
F₁ / A₁ = F₂ / A₂
A₂ / A₁ = F₂ / F₁
They indicate F1 = 40 N and the mass on the large plate is m₂ = 80kg
therefore the body weight is
W₂ = F₂ = m₂g
we substitute
A₂ / A₁ = m₂ g / F₁
A₂ / A₁ = 80 9.8 / 40
A₂ / A₁ = 19.6
the dishes are generally circular
A = π r²
A₂ / A₁ = π r₂² / π r₁²
A₂ / A₁ = (r₂ / r₁)²
we substitute
(r₂ / r₁)² = 19.6
r₂ / r₁ = √19.6 = 4.43
r₂ = 4.43 r₁
