Homework Help: science

Posted by please help(: on Wednesday, November 4, 2009 at 1:50pm.

Arrange the following from the most work to the least. For each instance, calculate the total amount of work done. Show all calculations, including units of measure.

1. pushing a box of math books weighing 600 newtons a distance of 20 meters
12000J

2. pulling a television weighing 400 newtons down a hallway of 35 meters
14000J
3. pushing a stalled truck weighing 7,500 newtons a distance of 0.4 meters
3000J
4. carrying several textbooks weighing 130 newtons, over the course of a semester, for 5,000 meters
650000J
i am quite confused... would it be 4,2,1,3 or is that wrong? and why?

science - bobpursley, Wednesday, November 4, 2009 at 1:57pm
None of these do work. Is the weight in the direction of the movement? Ans: No
all are wrong.
science - please help(:, Wednesday, November 4, 2009 at 2:00pm
i did all those calculations...so are the calculations wrong or is there just no order period cause none do work?

Answer this Question

Related Questions

science - Arrange the following from the most work to the least. For each ...
ipc - Arrange the following from the most work to the least. For each instance, ...
Science - Consider the isothermal expansion of 4.50 mol of an ideal gas at 450 K...
Chemistry - Use Hess' Law to calculate the heat of the following equation. ...
math - 2. Simplify. Please be sure to show all of your work. -3(-9) – |-5...
Physics - A worker applies a constant force of magnitude F = 339 N on a crate in...
statistics- normal standard distribution - a set of data is normally distributed...
My Retyped Algebra Post - 1. Use the arithmetic sequence of numbers 2,4,6,8,10...
physics - (a)Calculate the work done by moving a 50 kg mass along each of the ...
algebra - how do I order the following from least to greatset and show all work...

For Further Reading

First Name:
School Subject:
Answer: