Recent content by Twilit_Truth

How do you caclulate the average speed of a molecule? Is it the same as the volume? Thank you for your time.

How do you use the Latex template?

This isn't really a problem, but I need to understand what happened here. I was looking at an example and got confused by one of the steps. I can't figure out how to type it here, so all I can say is that it is on page 104 of the Holt Physics Problem Workbook, and it is going from just after it...

But what about when it is meters cubed to centimeters cubed? Isn't something different there?

When going from meters cubed to centimeters cubed, what do you change from the normal 10 ^ -2? Thank you for your time.

It's me again. This time I actually understand the material, I just need help with figuring this one out. The tallest iceberg ever measured stood 167 m above the water. Suppose that both the top and bottom of this iceberg were flat and the thickness of the submerged part was estimated to...

Ok, I did this: mgh=PE PE=(40.0)(9.81)(3)=1177.2 J I got the height by this: 6.0 * sin(30)=3 then: PE=KE+W PE-W=KE W=F(6.0 N)*d(6.0 m)=36 J 1177.2-36=1141.2 J That might be where I messed up, but I kept going: KE=1/2mv^2 2KE=mv^2 2KE/m=v^2 (2(1141.2))/40.0=v^2...

The frictional force you speak of is 6.0 N, right?

And force is the downward force and distance is 6.0 m?

work done in overcoming friction?

New problem. A 40.0 N crate starting at rest slides down a rough 6.0 m long ramp inclined at 30.0 degrees with the horizontal. The force of friction between the crate and the ramp is 6.0 N. Using the work-kinetic energy theorem, find the velocity of the crate at the bottom of the incline.

mgh = 1/2 mv^2. Masses cancel. Thanks.

But PE = mgh, and I don't have m.

Ok, this is the last day I have to work on this stuff, so please bear with me. I'll be posting questions in this thread as needed, so check back in every once in a while please. A pole vaulter clears 6.00 m. With what velocity does the vaulter strike the mat in the landing area? (Disregard...

Ok, back with more questions. On problem 4, part b, how do you find the number of revolutions wothout a measure of the track length (which is found in c, and I need help with that too)?