posted by MJ on .
Anyone can help me solve 2 of those problems
A man lifts a box of books that weigh 185N. The box is lifted 0.80m. How much work does the student do on the box?
A thermometer can measure temperature to the nearest enth of a degree. Which of the following readings gives the temperature to the accuracy of the thermometer?
e) None of these
The man exerts a force of 185 Newtons up.
The box moves .8 meters up
The work done = .8*185 newton meters which is called Joules
Only d is to a tenth of a degree.
A is to a hundredth
B is to a whole degree
C is to a hundredth (It is really the same a A)
thanks a lot