The speed of sound at 0°c is 331.5 m/s. calculate the speed of sound in the room at 20.0°c.

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

Will you chech and finish these for me, because i am stumped with them.

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?