Recent content by annalian

d2=1.43 kg/m^3

Homework Statement In temperature 273 kelvin and pressure 1.013*10^5 Pa, the density of nitrogen is 1,25 kg/m3. Find the density of this gas in temperature 330 kelvin and pressure 1.40*10^5 Pa. T1=273 K; p1=1.013*10^5Pa; d1=1.25 kg/m3 T2=330 K; p2 =1.4*10^5 Pa. d2=? Homework Equations...

I did it and vBE=-0.26c, not 0.8c as written in the book

Homework Statement The speed of a particle in Earth's frame is 0.4 c. A second particle goes away from the first one with speed 0.6 c. What is the speed of the second particle in Earth's frame? Homework Equations u=(u'+v)/(1+u'v/c^2) The Attempt at a Solution I think v=0.4 c and u'=-0.6, but...

I had forgotten to put the speed. it is 0.96 c

Homework Statement A star is 95.0 year lights away from Earth. How much time does it take to a cosmic ship, which moves with speed 0.96 c, to reach the star, if it is measured from a watcher from a) Earth a)ship c)What si the distance of trip, based on the viewer from the ship? Homework...

I rotated the pictures before uploading so that they would seem the same as they are in reality. (While photographing them they rotated in the wrong direction.) I don't know if I did it right to put the view on the right at the exercise as the vertical view. Should it be lateral? Where should b...

Homework Statement Draw the third view and the points on each view. In the first picture you have what the exercise has given us and in the second what I have drawn. I have turned the page so that the first view is the one on the left, the horizontal one is the one on the right. Is that OK...

This link http://1.1m.yt/Nh5bfO.jpg The drawing in the end. It is a cross section not horizontal, not vertical, not lateral

I will translate it: a slope/ slant cross section not horizontal, not vertical, not lateral. Could you find some other examples for this?

Homework Statement http://3.1m.yt/J986z5A.jpg Homework EquationsThe Attempt at a Solution I don't know if this is a cross section or if I should draw it. Could you give me a any other example or hint a bout this exercise? I think it can be a triangle, but I am not sure. i don't know how to add...

So I have to draw a section, right? Could you tell me what its shape will be or how should I draw it? In my book there is no information about this. Or could you send me a link that gives more information?

Homework Statement I don't understand the cuts or the views. For example if we make a horisontal cut, which view we should show? http://1.1m.yt/UJasa7v.jpg Homework EquationsThe Attempt at a Solution I have in the book an example that if we make a vertical cut we show the upper view (view...

I am looking for free solved exercises about: right angle projections, (cross) section views Here are some pictures of my book so you can understand what I am looking for http://1.1m.yt/3cNNDl-.jpg http://1.1m.yt/FekMn6x.jpg http://1.1m.yt/1t3KEer.jpg http://1.1m.yt/urA5V2_.jpg...

Why? Should I line some parts?