The drawing shows three situations in which a block is attached to a spring. the position labeled "0 m" represents the unstrained position of the spring. the block is moved from an initial position x0 to a final position xf, the magnitude of the displacement being denoted by the symbol s. suppose the spring has a spring constant of k = 46.0 n/m. using the data provided in the drawing, determine the total work done by the restoring force of the spring for each situation.

If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability

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?

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34