Using HDMI cable to connect laptop to LCD tv. i get both sound and picture on the tv. I have headphones connected to the TV. They get sound when watching digital tv channels but not when watching whats coming from the pc (the speakers on the tv do get sound but this does not seem to go to the headphones connected to audio out)2 AnswersMonitors8 years ago
Using HDMI cable to connect laptop to LCD tv. i get both sound and picture on the tv. I have headphones connected to the TV. They get sound when watching digital tv channels but not when watching whats coming from the pc (the speakers on the tv do get sound but this does not seem to go to the headphones connected to audio out)3 AnswersTVs8 years ago
a. A hollow cathode lamp is the required light source for atomic emission spectroscopy.
b. Absorption by molecular species in the flame causes spectral interference.
c. Graphite Furnace AAS is a more sensitive analytical method with lower detection limits for most metals than flame AAS.
d. Pressure broadening of atomic spectral lines increases with temperature.
e. Doppler broadening of atomic spectral lines increases with temperature.
I believe the answer to this question is b, can someone confirm
Calculate the mass of copper sulfate (CuSO4.5H2O) required to prepare 250 mL solution of 1000 mg Cu L-1.?
How do u do this type of question. Thanks3 AnswersChemistry1 decade ago
What is the probability that exactly 4/7 parts have greater lengths than 26cm given normal distribution,mean?
Suppose that the lengths of automotive parts on a production line can be regarded as independent observations from a normal distribution with mean 25cm and standard deviation 4cm. Seven parts are randomly selected from the line. What is the probability that exactly four of these parts have lengths greater than 26cm.
Not sure what i am doing wrong. using sd as 4/(7^.5).
Any help would be good. Some steps would be good. Thanks
Testing a hypothesis about the mean (mu) of a population.
H0: mu=35 vs H1: mu>35
There is a type two error if
a. you do not reject H0 when mu is really 40
b. rejects H0 when mu really is 40
c. you do not reject H0 when mu really is 35
d. you do not reject H0 when mu really is 30
e. you reject H0 when mu really 45
What does it mean by a type two error. Some help with the question. Thanks
I know u need to but why. Thanks
I understand it is because of resonance and whether or not the the substituent group is electron donating/withdrawing. How do u explain this further. Thanks2 AnswersChemistry1 decade ago
Not sure on how i would do this. Some help would be good. thanks3 AnswersChemistry1 decade ago
intergral from 0 to t f(r)f(t-r)dr=6t^3
How do u do this question. Some steps would be great. Thanks
n mean std dev
115 18 7.8
220 6.5 3.4
how do you do this. thanks3 AnswersMathematics1 decade ago
n mean std dev
115 18.0 7.8
220 6.5 3.4
What is the distribution of the height of the wall and the probability that the height differs of height 200cm?
by more than 1cm
A wall is made from precast blocks. Standard 20cm blocks are 19.5cm high to allow for a 0.5cm layer of mortar. In practice, the height of a block plus mortar row varies according to a Normal Distribution with mean 20.0 cm and standard deviation 0.25cm. Heights of successive rows are independent. The wall has 10 rows.
Some help with this question would be really good especially in relation to what the question is asking. Thanks
Some help. Thanks
In which region of an 1H MNR spectrum would you expect to see the peak(s) corresponding to methylene protons attached to the carbonyl of an ester?
a. 3.5 - 4.5 ppm
b. 1.0 - 2.0 ppm
c. 0.0 - 1.0 ppm
d. 3.0 - 4.0 ppm
e. 1.5 - 2.5 ppm
How do you do this type of question. the only one i can eliminate is c as it makes no sense. is this something i am spose to find in a table? No picture was provide with the question. Can someone explain it. Thanks
What is the value of the number, m, for which P(X < m) = 0.5?
Can somebody help me with this question. Thanks
I draw three marbles from a bag containing 6 red marbles, 10 blue marbles and 14 green marbles, all indistinguishable except for their colour. The marbles are drawn WITH replacement, and the bag is properly shaken after each marble is returned. Let X be the number of green marbles I obtain. Does X have a Binomial distribution?
a. No, because there are three, not two, categories of results.
c. No, because the selections of marbles are not independent
d. No, because the prob of a green marble changes from draw to draw
e. No, because the number of trials is not fixed
I have eliminated a and c. I am thinking the answer is b. can somebody help me out. Thanks
Some steps. Thanks