Calculate the mechanical energy of the child at position 1, position 2, and on position 3 and its total mechanical energy of the boy. If the boy has a mass of 45 kg, where the velocity of the boy at position 2 is 5.6 m/s with the height of 1 m and at position 3 is 8.5 m/s with the height of 2.8 m. I SWEAR TO GOD IF YOU DON'T ANSWER IT PROPERLY

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Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience. b. report the adverse drug experience to the irb only if there are several other occurrences. c. report the adverse drug experience as part of the continuing review report. d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.

Find the mass by adding the numbers from the three sliders