Recent content by HHH

The question is, which anion could be used to selectively remove silver ions from solution? The options are Cl, SO4, or CO3. All 3 of them form precipitates, but is there any that is better than the others?

Thank you.

so the acceleration would not be 9.8? if not why can you use both equations? mgh = 1/2mv^2 (2)x(9.8)x(3) = 1/2 (2) v^2 v = 7.6m/s vf^2 = vi^2 + 2ad vf^2 = 0 + 2(9.8)(3) v = 7.6m/s

Does it have to do with the normal force decreasing the force of gravity?

Homework Statement If a ball is dropped down a ramp of any shape, will the acceleration always be 9.8 assuming there is no friction. Homework Equations I know you can use mgh = 1/2mv^2 to solve for velocity, but can you use vf^2 = vi^2 + 2(a)(d) The Attempt at a Solution If you use both...

Homework Statement In a test, I was told to identify 3 characteristics that could increase the velocity of the sound traveling through a cup and wire phone. This was a sound and waves unit test. Homework Equations -- The Attempt at a Solution I wrote that the linear density could be...

B) What is the linear density of the string? C) What is the tension in the string? Those are easy if you know the speed.

So is it just a poorly worded question. Or do you always use first harmonic if it doesn't say. Also, In the question, it does however mention that the string supports 196Hz, so is that a minimum frequency→like a harmonic?

1. Solve for wave length L1 = 2/2 *lambda 0.33 = 2/2 * lambda 0.33 *1 = lambda 0.33 = lambda 2. Solve for speed of wave v = f * lambda v = 196 * 0.33 v = 64.68 m/s I get that which is wrong

Homework Statement A violin string with a mass of 0.35g is 33 cm long. The frequency of a wave supported by the string is 196 Hz. What is the speed of the wave? Homework Equations Ln = n/2 *lambda v = f*lambda The Attempt at a Solution 1. Solve for wave length [/B] L1 = 1/2 *lambda 0.33 =...

Yeah i agree, i think he just wants to see of our math is correct. Thanks for the help

We did it in a classroom, how can an app pick up power grid thing. Also, during the lab we kept getting different frequencies ranging between 50 to 640, teacher said use the highest and lowest.

Is my process and math right? or no?

The string on the violin with the highest pitch is the note E, which has a frequency of 329.6 Hz and a wavelength of 1.032 m. If the string has a mass of 180.0 g and a length of 32.0 cm and is currently producing a wave of frequency 328.1 Hz, how much do you need to change the tension in the...

Yeah convection makes more sense