Answer:
2440.24 J
Explanation:
Moment of inertia, I1 = 5 kg m^2
frequency, f1 = 3 rps
ω1 = 2 x π x f1 = 2 x π x 3 = 6 π rad/s
Moment of inertia, I2 = 2 kg m^2
Let the new frequency is f2.
ω2 = 2 x π x f2
here no external torque is applied, so the angular momentum remains constant.
I1 x ω1 = I2 x ω2
5 x 6 π = 2 x 2 x π x f2
f2 = 7.5 rps
ω2 = 2 x π x 7.5 = 15 π
Initial kinetic energy, K1 = 1/2 x I1 x ω1^2 = 0.5 x 5 x (6 π)² = 887.36 J
Final kinetic energy, K2 = 1/2 x I2 x ω2^2 = 0.5 x 3 x (15 π)² = 3327.6 J
Work done, W = Change in kinetic energy = 3327.6 - 887.36 = 2440.24 J
Answer:
Bullet List and Highlights
Explanation:
Bullet list: Bullet Lists always used to work for me when I would be writing notes and you can always label each bullet point after a topic so you can find which one you're looking for.
Highlights: You can write down the main points of the Passage and highlight the main points of the list you made and make sure you study the highlighted lines first and the normal ones second.
Answer:
<u>A</u>
Explanation:
Assessing your fitness to drive is something you should do <u>before</u> you embark on your journey.
Answer:
I would say A. If correct would atleast consider brianlist ehhe:)
Explanation:
Answer:
it can steal data or passwords
Explanation: