Answer:
100 m/s²
Explanation:
First, convert to SI units:
50 g = 0.050 kg
Now plug into the formula:
F = ma
5 N = (0.050 kg) a
a = 100 m/s²
Weak nuclear force is the most involved
Answer:
C. her moment of inertia increases and her angular speed decreases
D. her moment of inertia increases and her angular speed decreases
Explanation:
The moment of inertia of a body is the sum of the products of an increment of mass and the square of its distance from the center of rotation. When a spinning person extends her arms, part of her mass increases its distance from the center of rotation, so increases the moment of inertia.
The kinetic energy of a spinning body is jointly proportional to the moment of inertia and the square of the angular speed. Hence an increase in moment of inertia will result in a decrease in angular speed unless there is a change in the rotational kinetic energy.
This effect is used by figure skaters to increase their spin rate by drawing their arms and legs closer to the axis of rotation. Similarly, they can slow the spin by extending arms and legs.
When the person extends her arms, her moment of inertia increases and her angular speed decreases.
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<em>Note to those looking for a letter answer</em>
Both choices C and D have identical (correct) wording the way the problem is presented here. You will need to check carefully the wording in any problem you may think is similar.
Answer:
Explanation:
r = Radius of atom = 
m = Mass of chlorine atom = 
= Angular speed = 
The moment of inertia of the system is given by
Kinetic energy is given by
The rotational kinetic energy of one molecule of the atom is
