Answer:
angular speed = 0.4 rad/s
Explanation:
given data
radius = 5 m
moment of inertia = 2000 kg-m²
angular speed = 1.0 rad/s
mass = 60 kg
to find out
angular speed
solution
Rotational momentum of merry-go-round = I?
we get here momentum that is express as
momentum = 2000 × 1
momentum = 2000 kg-m²/s
and
Inertia of people will be here as
Inertia of people = mr² = 60 × 5²
Inertia of people = 1500 kg-m²
so Inertia of people for two people
1500 × 2 = 3000
and
now conserving angular momentum(ω)
moment of inertia × angular speed = ( momentum + Inertia of people ) angular momentum
2000 × 1 = (2000 + 3000 ) ω
solve we get now
ω = 0.4 rad/s
Well, that would be a plane (flat) mirror
<span>provided that </span>
<span>the mirror and the object are oriented parallel to each other</span>
Answer:Rocks erode and sediment is deposited.
No sediment is deposited over a long time.
Explanation:
Rocks erode and sediment is deposited.
No sediment is deposited over a long time.
Answer;
-The energy needed to split an atom into separate protons, neutrons, and electrons
Explanation;
E = mc² The equation is derived directly from Einstein’s Special Theory of Relativity .
Each of the letters of E = mc2 stands for a particular physical quantity. Writing them out in full we get:
Energy = mass × the speed of light squared
In other words: E = energy (measured in joules, J), m = mass (measured in kilograms, kg), c = the speed of light (measured in metres per second, ms-1), but this needs to be squared.
Answer:
R/2
Explanation:
Resistance of full lenght wire = R
Since length is divided into half but even then the resistance of each individual half is same i-e R
If connecetd into parallel mode then we know resultant resistance say 'r' is
1/r=1/R+1/R
or
1/r = 2/R
r= R/2