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
Blood donation occurs when blood is drawn voluntary from an individual for transfusion.
<h3>
What is Transfusion?</h3>
This is the process of donating blood to an individual and is usually done intravenously.
Before blood donation takes place , necessary tests are usually done to prevent infection and ensure the blood types match to prevent coagulation and death.
Read more about Blood donation here brainly.com/question/13926051
Answer:
B
Explanation:
Multiply each side by ax-2 to remove the fraction to continue solving. Use the FOIL method to solve (-8x-2)(ax-2). Continue to solve the equation.
B is your answer!
Thanks! Its really nice of you to offer!
Based on the information given regarding the advertising firm, it can be noted that the firm is at step 4 of the data analysis process.
<h3>
What is data analysis?</h3>
Data analysis simply means the collection and analysis of data in order to reach a particular conclusion or get certain information.
In this case, since the advertising firm has used insights from its analytics team to create a strategy for improving sales. This is the 4th step which is known as "analyze the data".
Learn more about advertisement on:
brainly.com/question/1658517