Answer:
80
= 8 millimeter
Hence, option D is correct
Explanation:
1 centimeter on map represents 100 
10 millimeter on map represents 100
.
So, 1 millimeter on map represents 10
.
10
= 1 millimeter
Thus,
80
= 8 millimeter
Hence, option D is correct
The angular acceleration is 
Explanation:
To solve this problem we can use the equivalent of Newton's second law for rotational motions:
(1)
where
is the torque acting on the body
I is the moment of inertia of the body
is the angular acceleration
In this problem we have:
is the torque
The moment of inertia of a solid cylinder about its axis is

where
M = 100 kg is the mass
R = 1.2 m is the radius
Substituting,

And solving eq.(1) for
, we find the angular acceleration:

Learn more about rotational motions:
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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.
Answer:
pressure is an affect which occurs when a force is applied on a surface area
Explanation:
its unit are barr,millbarr,torr,mmhg
False, the fluid can evaporate with its whole volume.