Answer:
1.64 rad/s
Explanation:
Given,
radius of merry-go-round, r = 1.80 m
mass of merry-go-round, M = 120 Kg
angular speed, ω = 0.350 rev/s
Initial angular speed = 2π x 0.350 = 2.12 rad/s
Mass of child, m = 36.5 Kg
Moment of inertia of the merry-go-round
L= I ω = 349.92 x 2.12 = 769.41 kgm²/s
Child moment of inertia
I₂ = m r^2 = 36.5 x 1.8² = 118.26 kg.m²
Final moment of inertia,
I_f = 349.92+118.26 = 468.18 kg.m²
Final speed = 
angular speed of the child is equal to 1.64 rad/s
The choices can be found elsewhere and as follows:
<span>a.
copper alloy or bronze casting were first used in Sub Saharan Africa.
b.
Islam became an economic and religious force in West and North Africa.
c.
that abstract thought in humans occurred much earlier than once thought.
d.
the French colonies were taken over before the third or fourth centuries.
I think the correct answer is option C. </span>The discovery of the Blombos cave suggests that abstract thought in humans occurred much earlier than once thought.
The light model helps you change the location of the shadow is because when light comes the shadow moves farther and farther that is what I learned in science today
Answer:
Explanation: C is the correct one
because A) the current divides into parts for each branch
B)the current doesn't varry in series
D) in parallel the current divides and passes in all branches
<h2>Steps</h2>
So remember that Density = mass/volume . In this case, the mass is 1896 g and the volume is 213 cm³. With this information, divide as such:
<h2>Answer</h2>
<u>In short, the density of the copper is (rounded to the hundredths) 8.90 g/cm³</u>
