Homework Statement
The specific rotation of a tetrasaccharide was measured to be -20.5°. Upon complete hydrolysis in acid the optical rotation of the solution was found to be -36.9°. Knowing that the specific rotations of n-acetylgalacosamine,3-deoxy-l-fucose and 2-deoxy-D-ribose are...
Homework Statement
10 mL solution of 0.5 M CrCl(OH2)52+ is allowed to aquate to Cr(OH2)63+. To determine an approximate rate of reaction, the amounts of CrCl(OH2)52+ and Cr(OH2)63+ present after a certain period of time are evaluated. This is done by pouring the solution on a cation exchange...
Homework Statement
This was determined from an experiment,where the resistance of 0.02M of KCl was to be determined
[KCl]=0.02M conductance=2.86ms L=0.002768ohm^-1 to obtain k
Co(NH3)4CO3]NO3 :
conductance: 1.923ms concentration of cobalt complex: 0.002M
Homework Equations
k=RL...
should i use this
ΔE = RchZ²{1/n²(1) - 1/n²(2)}
where R is the Rydberg constant (1.0974 x 10E7 m-¹); c the speed of light in vacuum (2.9979 x 10E8 m s-¹); h Planck's constant (6.626 x 10E-34 J s); Z nuclear charge; n(1) & n(2) are the principal quantum numbers of the electron transition
Homework Statement
He+ ion consists of a nucleus which is an alpha particle plus one orbiting electron.Hence it has a net positive charge.
a)Derive an expression for the electron state energies
b)what is the wavelength associated with a transition between the lowest two energy states...
i think r is suppose to represent distance. The question gives me the formula in terms of r
I guess my question is if my calculations are correct? Not sure if im on the right track. Im not sure how many answers to give I wasnt told but I calculated up to 3.
Homework Statement
A pair of speakers connected to the same signal generator face each other, one at x=0 and the other at x=1.5m. If they are producing a sound frequency of 2000Hz what are the points (position x) of constructive interference between the speakers? Express your answer in...
Homework Statement
Solenoid consists of a hollow tube of length 5 meters and around which 1000 turns of wire are wrapped.?
Current I flowing in the wire generates a magnetic field whose direction is given by the right hand rule. It can be shown the magnetic field in a long narrow tube is...
Homework Statement
Man travels down the highway in his car whistling middle C
A policeman has a defective radar gun but passed a physics course. He hears the
pitch change from D(294 Hz) immediately above middle C(262Hz) to A#(233Hz) immediately below
middle C as the car passes.
a) How fast...
lol well i have a sheet we got with all the notes and frequency so i dont think were expected to memorize them, anyways thanks i feel like this is going no where ill just ask my professor
from here not sure which octave anyways i think its wrong the answer should still be C
http://www.sengpielaudio.com/calculator-… [Broken]
Scroll down to "Frequency to Musical Note Converter".
okay this is what i did
f=velocity of air/lambda middle C
262Hz=330m/s / lambda middle C
which gives lamba=1.2595 m
frequency of helium is f=velocity of helium/lambda
f=965m/s/1.2595m
f=766Hz
the steps i did before is what my teacher did, he just solved it halfway and said thats the equation we use, so im a bit confused because i calculated it to be 766Hz which is around the note G and then after some research i found that the note is still C but i guess a few octaves higher? not...
Homework Statement
Singer sings middle C. She then gulps helium and tries to sing the same note i.e her vocal chords remain the same. What note will the listener hear?
Homework Equations
f=velocity of air/lambda middle C
The Attempt at a Solution
f=velocity of air/lambda...
Homework Statement
Does the time for one oscillation, change during the damped oscillations? and please explain
Homework Equations
The Attempt at a Solution
Homework Statement
Spaceship initially at rest as measured,experiences constant acceleration of a=(1,2,3)m/s^2?
what is the velocity,after 5 seconds,
and speed after 5 seconds
and position after 5 secs
what is the distance it has travelled in 5secs
Homework Equations
v=at not...
Spaceship initially at rest as measured,experiences constant acceleration of a=(1,2,3)m/s^2?
what is the velocity,after 5 seconds,
and speed after 5 seconds
and position after 5 secs
what is the distance it has travelled in 5secs
This might seem easy, but im sort of rusty on the math since i havent taken a math course in a while.
Homework Statement
A 2 meter long bar lies in the xy plane with one end at the origin. find position at the xy plane of the other?
end point of the bar if the angle the bar makes with the...