Recent content by Squeezebox

Use the total area of the legs. The weight is distributed over the 4 legs.

Now you have the opposite problem. There's a negative sign in this one. m= -v/u The image gets flipped upside down. This happens with your eyes too; your brain flips the image back right side up.

2 year old topic. I don't think it's relevant anymore.

That looks right. The negative image distance you got before implies that the film needed to be outside the camera to capture the image.

This is a 2 and a half year old topic.:wink:

Why did you reason that the image distance was negative?

You can have different compounds like ionic or organic and they have two different naming schemes.

Yup. http://www.fairbornchempage.com/Resources/Prefixes.htm Yes. The term you were probably looking for was "chemical nomenclature" for the Google search. But you also need to know the different types of molecules to know how to name them.

θ=ω_0 t+1/2 αt^2 then n=theta/2pi θ=0.5*pi*0.2+.5*1.8*pi*.04=pi(0.1+0.036)=0.136*pi θ/2*pi=0.136*pi/2*pi=0.136/2=0.068 rev

a) correct b) still incorrect c) correct, m/s (rads are kind of like a place holder unit in this case so it goes away, i don't know the actual reason why though) d) correct, m/s2 (for same reason)

a) You didn't convert the units of ω0. b) Wrong for same reason as a. c) Wrong for same reason as a. d) Can you show the calculation? You know what your doing, just didn't convert.

Look at the derivative of e^kt and see how that relates to e^kt.

No, angular acceleration is 0.9 rad/s2. ac=vt2/r at=\alphar

Those are the only variables you need to know. I edited my above post, sorry for reposting what you knew.

\Deltax=vit+\frac{1}{2}at2 There's your kinematic equation. Edit: sorry didn't see your attempt. \Deltax=vit+\frac{1}{2}at2 0=vit+\frac{1}{2}at2-\Deltax \frac{1}{2}at2+vit-\Deltax=0 Quadratic form