Purchase Solution

Physics - Work-Energy Theorem

Not what you're looking for?

Ask Custom Question

A 70 kg person uses 204.0 kJ of energy to walk a kilometer. This energy comes from "burning" glucose, but only about 30.0% of the heat of combustion of glucose can be used for propulsion. The rest is used for other body functions or is wasted as heat. Assuming that a sugar-coated cereal contains 30.0% sugar (which can be considered glucose) and no other energy source, what mass of cereal will provide enough energy to walk 0.5 km.

Purchase this Solution
Solution Summary

The expert examines work-energy theorem. Neat, complete and step-by-step solution is provided.

Solution Preview

Let the mass of the cereal required be m g. This will have a sugar content of 30 %, which is

0.3m. This is ...

Purchase this Solution
Free BrainMass Quizzes
Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

The Moon

Test your knowledge of moon phases and movement.

Basic Physics

This quiz will test your knowledge about basic Physics.

Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

View More Free Quizzes
Related BrainMass Solutions

  • Work done by forces and work-energy theorem

    The solution is comprised of detailed explanation of work done by forces and work-energy theorem. Supplemented with free body diagram and step-by-step text, the solution provides the student a clear prospective of classical physics.

  • Computational Physics - Conservation of energy

    (a) Use the work-energy theorem to show that the distance over which the force acts is mv2/2F. Am I on the right track? UGH so very frustrated!

  • Physics - Work-Energy Theorem

    216231 Physics - Work-Energy Theorem.. A 700kg glider is flying in straight and level flight at 90 m/s.

  • Physics - Work-Energy Theorem

    216232 Physics - Work-Energy Theorem. A .010-kg bullet traveling horizontally at 400.0 m/s strikes a 4.0-kg block of wood sitting at the edge of a table. The bullet is lodged into the wood.

  • the work done on the jet by the catapult

    The solution shows detailed calculation of the work done on the jet by the catapult using work-energy theorem.

  • distance up the incline after launched by a spring

    The normal force is The frictional force Two forces do work on the student when he is on the incline: gravity and friction. So the work done is Finally, apply the work-energy theorem, So the student travels 26.24 m along the incline.

  • Work required to move electric charges to infinity

    Physics, Other Year 1 Electric Potential and Electric Potential Energy A rectangular box has three charges at the corners with the length of the box being x = 0.55 m and height y = 0.36 m.

  • Terminal velocity of pilot; ideal pulley; pop gun's spring

    Use the work-energy theorem to calculate the masses' speeds when the 8kg mass reaches the floor 3. My 'pop' gun is essentially a spring that fires marbles as projectiles.

  • Slide and Velocity

    According to work-energy theorem, the net work done is equal to the change of kinetic energy. The final velocity is 0. then The only work is done by the kinetic frictional force, Where m1 and m2 are the mass of the two skaters.

View More Related Solutions