physics

posted by .

11. You did 150. J of work lifting a 120.-N backpack.
a. How high did you lift the backpack?
b. How much did the backpack weigh in pounds? (Hint: There are 4.448 N in one pound.)

  • physics -

    work=weight*height

    weigh=120N*1lb/4.448N

  • physics -

    30

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. science

    Mr.wilinson carried his backpack 12kilometers and set up camp on the edge of cutthroat lake it took him 3 hours to get there from the trailhead how much work did he do on his backpack on the hike in?
  2. science

    a mr wikinson backpack weighs 45 pounds if there are 453.7grams in one pound what is the mass of his backpack?
  3. Algebra 1

    you are hiking. the total weigh of your backpack and its contents is 13 3/8 pounds. you want to carry no more than 15 pounds. how many extra water bottles can you add to your backpack if each bottle weighs 3/4 pound?
  4. physics

    You take your backpack out of the car, hike to the top of a nearby mountain, and return with your backpack to your car at the bottom. Have you changed the amount of your backpack's mechanical energy?
  5. physics

    A backpack full of books weighing 43.0 N rests on a table in a physics laboratory classroom. A spring with a force constant of 150 N/m is attached to the backpack and pulled horizontally, as indicated in the figure. If the spring stretches …
  6. science

    a crane does 62,500. J of work lifting a 120.-N backpack?
  7. physics

    A backpack full of books weighing 58.0 rests on a table in a physics laboratory classroom. A spring with a force constant of 140 is attached to the backpack and pulled horizontally. If the backpack begins to slide when the spring ( …
  8. physics

    A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?
  9. physics

    If You did 150 joules of work lifting a 120 newton backpack.A) How high did you lift the backpack?
  10. SS

    Nivea wants to buy a new backpack. She looks at different choices. One store has a yellow backpack and a large blue one that she likes. Another store has a big, red backpack and a smaller red one. Nivea wants a big backpack and she …

More Similar Questions