Recent content by Ethan_Tab

So if I just knew that I had an solar irradiance of 100W/m^2 and I needed to power a 1,000,000 W colony how would I determine how large of a solar farm I would need?

Homework Statement Hello everyone, I'm working on a (simplified) Mars energy model in which I need to calculate the area of land I need to cover in solar panels in order to achieve an particular power output. Say the land I'm looking at receives a constant solar irradiance of 100W/m^2 from...

Homework Statement A set of eight numbers has a median of 19. a) What is the sum of the fourth and fifth data points b) What is the sum of the fourth and sixth data points (no answers available) Homework Equations (N+1)/2 -- Position of the median (N+1)/4 -- Position of Q1 3(N+1)/4 --...

Homework Statement solve 3x4+2x2-4x+6≥6x4-5x3-9x+2 Do not use technology (i.e.-graphing calculators) Homework Equations Remainder Theorem The Attempt at a Solution I set the inequality equal to zero -3x4+5x3+3x2+5x+4≥0 Checking all the Possible rational roots for a possible factors... none...

f(x)=[((x-1)/(x+1))+((x-1)/(x+1))]1/2 What is F-1(x) No matter what I try I am unable to isolate for y after switching x's with y's. Any ideas?

In what ways would a perpetual machine violate the laws of physics?

What are the odds that humans will come up with a 100% (or extremely close to) efficient machine within the next couple centuries. If so, what principle do you think it would work on? How about a perpetual motion machine? Share your thoughts.

I understand know. Thanks for the help! :smile:

I see what you saying, I think I'm just confusing myself with the frame of reference. However I don't see how they were able to find the final relative speed (16m/s) using momentum. Could you perhaps explain?

Here is the textbook solution. I can't make sense out of the collision part: They're taking the collision to be completely inelastic which is also confusing me.

Once the plane touches down, how do you know that there will be not transfer in momentum?

Homework Statement A 1000 kg plane is trying to make a forced landing on the deck of a 2000 kg barge at rest on the surface of a calm sea. The only frictional force to consider is between the plane’s wheels and the deck; this braking force is constant and is equal to one-quarter of the plane’s...

Just to add to what I just said, we can represent that first part through fobs=f0+5 therfore f0+5=f0[(v)/(v-vEmma)]

Homework Statement Emma and Don are playing in a band. While emma is marching toward Don, Don tunes his instrument to match the note that emma is playing. When emma stops, don immediately notices a beat frequency of 5 Hz. If the speed of the sound is 330m/s what is the relationship between...

Haha. Again, I appreciate your help immensely. :smile: