Recent content by LastXdeth

Yes, a virtual image would have a di = -2(do) because the virtual image is upright and in front of the lens.

Thanks! I have answered my own question mathematically. Since the magnification is 2.00, di = (2)(do). I just plugged it in the lens equation to find do.

Homework Statement (a) How far from a 50.0-mm-focal-length lens must an object be placed it its image is to be magnified 2.00X and be real? (b) What if the image is to be virtual and magnified 2.00X? Homework Equations Thins Lens Equation: 1/f = 1/do + 1/di Magnification...

Thanks, it never came across my mind that density was a given value! I will check my textbook.

Homework Statement A ski gondola is connected to the top of a hill by a steel cable of length 620 m and diamter 1.5 cm. As the gondola comes to the end of its run, it bumps into the terminal and sends a wave pulse along the cable. It is observed that it took 16 s for the pulse to return...

It's just my lazy rounding error. Thanks for the confirmation!

I guess I just need the scaler quantity. Thanks for notcing my Δt error also. I need to read the questions more carefully. By the way, I got my answer to be 13.725 meters if someone can confirm.

No problem! Thanks for confirming!

I got 103.75. :confused:

Oh, wow, another careless mistake like on my previous question...So, besides the "decimal manipulation", are there any other errors like lack of vectors (negative and positive). I am having a dilemma on whether to make v1 negative since it's going the opposite direction.

Aww crap! Dang, I feel so ridiculous for reversing it up!

I don't see any mass unit that needs attention. The only thing I did with mass was convert m1 (4.0 g) to the SI unit kg.

Homework Statement A bullet with a mass of 4.0 g and a speed of 650 m/s is fired at a block of wood with a mass of 0.095 kg. The block rests on a frictionless surface, and is thin enough that the bullet passes completely through it. Immediately after the bullet exits the block, the speed of...

Homework Statement A 92-kg astronaut and a 1200-kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.14 m/s directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with the shuttle. What...

I would like to set the reference level at where the dotted line is (where v=0).