Homework Help: physics

Posted by bobpursley on Tuesday, June 5, 2007 at 9:27pm.

wet means lubrication. One of those is not wet. There is no difference in pulling or pushing. Think wet, or dry.

Which of the following would require the greatest force to keep a 5.0 kilogram rubber

block moving horizontally at a constant rate of speed?

a. Pushing the block across wet asphalt.
b. Pulling the block across wet asphalt.
c. Pulling the block across wet concrete.
d. Pushing the block across dry concrete.

i dont knw what's the different of pulling and pushing the block...
and i haf calculated that their force of friction..the rubber on wet asphalt is 26.0N...and the rubber on wet concrete is 28.4N...

what do i have to do next?

No one has answered this question yet.

Answer this Question

Related Questions

6th grade science - Mechanical weathering occurs at a greater rate in climates ...
Math-Probability - A horse wins 12% of its races on dry tracks, but only 6% of ...
science - Which of the following climatic regions describes two different parts ...
Chemistry - According to the second law of thermodynmics..a) cold moves to hot B...
English - Homework Help Forum: English Posted by rfvv on Sunday, August 29, 2010...
Chemistry - What are the differences between "wet gases" and "dry...
physics - why are you more likely to have an accident on your bicycle if you are...
I need serious help - A certain food must be mixed at a ratio of 1:50 (1 part ...
science - why does limestone form often in dry climates but rarely in wet ...
chemistry - 146 mL of wet H2 gas is collected over water at 29.0 degrees celsius...

For Further Reading

First Name:
School Subject:
Answer: