Three identical blocks move either on horizontal surface, up aplane, or down a plane as shown below.They start with same speedand continue to move until brought to rest by friction. Rank thethree situations according to the mechanical energy dissipated byfriction, least to greatest. Show Transcribed Text (a) the same for all cases (b) 1,2,3 (c) 1, then 2 and 3 tie (d) 3,2,1 (e) 2,1,3 3 2 tay 3

A 600-kg roller coaster car starts at a height of 35.0 m.  Assuming negligible energy losses to friction and air resistance, determine the PE, KE, and speed of the car at the carious locations (Start, A, B, C, D, E, and F) along the track.   Round your answers to the nearest whole number.

(10%) Problem 5: Suppose a 345-g kookaburra (a large kingfisher bird) picks up a 65-g snake and raises it 2.3 m from the ground to a branch. > A 50% Part (a) How much work, in joules, did the bird do on the snake? W = sin() cos() tan() 8 9 HOME cotan() asin() acos() E AL 5 atan() acotan() sinh() 1 2 3 cosh() tanh() cotanh() END O Degrees O Radians VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 3% deduction per hint. Hints remaining: Feedback: 2% deduction per feedback. A 50% Part (b) How much work, in joules, did it do to raise its own center of mass to the branch?

(a) What is the efficiency of an out-of-condition professor who does 2.00 × 105 J of useful work while metabolizing 510 kcal of food energy? (Enter your answer as a percentage. Enter a number.) % (b) How many food calories (in kcal) would a well-conditioned athlete metabolize in doing the same work with an efficiency of 20%? (Enter a number.) kcal