Answer:
8.5 kg
Explanation:
Angular momentum is conserved.
I₁ ω₁ = I₂ ω₂
I ω₀ = (I + mr²) ω
(49 kg m²) (40 rpm) = (49 kg m² + m (1.2 m)²) (32 rpm)
61.25 kg m² = 49 kg m² + (1.44 m²) m
m = 8.5 kg
The mass of the clay is 8.5 kg.
The total power delivered by the battery if the lightbulbs are connected is V^2/9R
<h3>Power of a battery</h3>
The formula for calculating the power of a battery is expressed according to the equation;
Power = v^2/RT
where
R is the total resistance
v is the voltage or emf
If there are 3 identical lightbulbs, each having constant resistance R are in series, then;
RT = R + R + R
RT = 3R
The voltage drop across each lightbulbs will be the same for parallel connection, hence;
Power = 3(V/3)^2/(1/3R)
Power = V^2/9R
Hence the total power delivered by the battery if the lightbulbs are connected is V^2/9R
Learn more on power here: brainly.com/question/24858512
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First of all we know about the ionic bond that the attraction b/w two atoms the atom which lose electrons is become cation and have positive sing which one get electrons it become ionic. so in such sitivation the sodium lose one electons "that's why sodium has 1+ charge in Nacl chemacal bond."
hope it will help you and please get my answer in brainlist
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First, we need to calculate for the height where the mailbag
was dropped.
h = 3.50 * t^3
at t = 1.75 s, h is:
h = 3.50 * (1.75)^3
h = 18.758 m
Then we can use the equation to solve for time:
h = v0t + 0.5gt^2
where v0 is initial velocity = 0, t = time, g =
acceleration due to gravity
18.758 m = 0 + 0.5 * (9.81 m/s^2) * t^2
t^2 = 3.8242
t = 1.96 s
<span>So the mailbag reaches the ground after 1.96 seconds</span>