Answer:
30 N
Explanation:
The buoyant force acting on an object is an upward force exerted by the fluid in which the object is immersed.
The magnitude of the buoyant force is equal to the weight of the fluid displaced by the object, mathematically:
where
is the density of the fluid
V is the volume of fluid displaced
g is the acceleration due to gravity
The formula can be written also as
where m is the mass of fluid displaced.
In this problem, the 3-Liter container filled with mercury is completely submerged in the water: this means that the volume of water displaced is
V = 3 L
We also know that 1 L of water weights about 10 N, so the weight of 3 L of water is
And therefore, this is the buoyant force acting on the container: 30 N.
<span>Lipids, Proteins, Carbohydrates, and Nucleic acids are the four main groups.</span>
Period of an ideal simple pendulum = 2π √(L / G)
1.87 = 2π √ (L / 9.81)
Divide each side by 2π : (1.87 / 2π) = √ (L / 9.81)
Square each side: (1.87 / 2π)² = L / 9.81
Multiply each side by 9.81 : L = (9.81) (1.87 / 2π)² = <em> 0.869 meter</em>
Choice 'D' is the closest one.
<span>10 times as much. Since F=m*a, and a is constant, the only thing that affects force is the mass.
In response to the below answer, the acceleration due to gravity does not change. The force due to gravity definitely DOES change depending on the mass of the object. Since the force is what the problem asks for, the answer is 10</span>