Recent content by tobywashere

Is that right? 10 char

Oh so I made this problem unnecessarily complicated. [0.020M][Ag+]2 = 9.0x10-12 [Ag+]2 = 2.12x10-5M 2.12x10-5M x 2.5L x 170g/mol = 0.0090 g

Oh ok. So you just need 2.62x10-4M of AgNO3. 2.62x10-4M x 2.50L x 170g/mol = 0.11135 grams?

Homework Statement What is the minimum amount of AgNO3, in grams, that has to be added to 2.50L of 0.020M K2CrO4 to produce a precipitate? Homework Equations Ksp Ag2CrO4 = 9.0 x 10-12 [Ag+]2[CrO4-2] = 9.0x10-12 The Attempt at a Solution 2AgNO3(aq) + K2CrO4(aq) --> Ag2CrO4(s)...

Sorry, I made a calculation error. I forgot to square c. I edited my previous post. Now my answer is 1.67 x 10-13 J

Homework Statement The positron and the electron each have a rest mass of 9.11 x 10-31 kg. In a certain experiment, an electron and a positron collide and vanish, leaving only electromagnetic radiation after the interaction. Each particle is moving at a speed of 0.20c relative to the laboratory...

Yeah I'm pretty sure the textbook is wrong. Thanks!

Homework Statement Two small charges, +6.0 x 10-5C and -2.0x10-5C, are placed 36 cm apart. Calculate the magnitude of the electric field at a point 18 cm above the midpoint of the line joining the two charges, on the perpendicular to that line (and thus equidistant from the charges)...

So the textbook was wrong. The actual answer is r = 2.06 x 10-11 I know what the textbook did wrong: they took the square root of the correct answer, which gives 4.5 x 10-6

I tried your method and I got 4.1 x 10-11 m. That's not a little bit off from the actual answer, that's a lot off... But thanks for the suggestion.

Two electrons are fired at each other... Homework Statement Two electrons are fired at 3.5 x 106 m/s directly at each other. Calculate the smallest possible distance between the two electrons. Homework Equations Ee = k(q1)(q2) / r Ek = (0.5)mv2 The Attempt at a Solution I...

How did you calculate x0 anyway? I did some more tests with hanging weights, I now I have more detailed information about the spring. Deformation (cm) | Force (N) ====================== 2.3 | 5.39 3.9 | 8.33 4.7 | 10.29...

bummmmmppppp

Homework Statement I can solve this problem, but I keep getting a different answer from the textbook. I just want to confirm whether I'm wrong or the textbook is wrong. A truck of mass 2.3 x 104 kg traveling at 15 m/s [51° S of W] collides with a second truck of mass 1.2 x 104 kg. The...

Also should I use a k value of 191? I could always go to the hardware store and buy a better spring.