The possible disadvantage of using the graphic in “On-line Programs to Train Your Brain is: Because the graphic looks “child-like” readers may not take the author seriously.
<h3>What is the disadvantage of online programs?</h3>
Now, online programs used in training our brain doesn't take anything seriously because for example, during online classes, a lot of students are not as serious as they would have been physically which makes them to loose their marks and that's all caused by our brain cause we think we can learn it later and we don't but instead just ignore it.
Thus, the possible disadvantage will be that the graphic looks “child-like” readers may not take the author seriously.
Read more about disadvantage of online programs at; brainly.com/question/22317416
Answer: more protons are present in the atomic nucleus
The lights are red so the cars are not moving which means it’s safe to cross the road. so the children can cross
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
