Theodore

Need help with maths question.

A 1.5m high fence leans outwards from a house at an angle of 102 degrees. A boy sits on top of the fence and the angle of depression from him down to the house is 32 degrees 44 minutes. How far from the fence is the house?

Please show working out

Thank you

Α cαntilever oscillates like αn underdαmped spring-mαss system with α fοrce cοnstαnt of 2.1x10^6 Ν/m αnd α mαss of 108 kg. Dοes the resοnαnce frequency οccur belοw 35Ηz?

Pleαse show working out.

Which two sugars are joined via an O-glycosidic bond to make the disaccharide known as lactose

a) Two molecules of α-D-mannose, joined via a 1-4 glycosidic bond

b) Two molecules of α-D-glucose, joined via a 1-4 glycosidic bond

c) β -D-galactose and α-D-glucose, joined via a 1-4 glycosidic bond

d) β -D-fructose and α-D-glucose, joined via 1-2 glycosidic bond

α-D-fructofuranose has how many chiral carbons?

a) 5

b) 6

c) 3

d) 4

Which of the following disaccharides could be extended to form a cellulose polymer?

A - Sucrose

B - Trehalose

C - Maltose

D - Lactose

E - None of the above

I need help with solving this

It is in regards to simple harmonic motion

0=1.6cos(π+φ)

Need to find what φ is

In deriving the Michaelis-Menten equation for enzyme-mediated reactions, which of the following did we assume?

A - The concentration of S is reduced by formation of ES.

B - The rate of the reaction is limited by ES dissociation to form free enzyme and substrate S.

C - ES breakdown to form E + S is slower than ES breakdown to form E + P.

D - An intermediate complex, EP is involved in the reaction.

E - The reverse reaction is insignificant

What are the blanks?

In a cation exchange column the resin is __________ charged, in an anion exchange column the resin is __________ charged

Which of the following amino acids has a side chain (R) that has hydrogen-bonding potential?

A - Serine

B - Glycine

C - Alanine

D - Leucine

Which of the following atomic transitions is forbidden?

A. 5p to 3d

B. 2p to 1s

C. 4s to 3p

D. 5d to 4s

E. 5p to 4d

I need help with the following math problem.

A paddock contains both ducks and sheep. There are

a total of 42 heads and 96 feet in the paddock. How

many ducks and how many sheep are in the paddock?

Please show working out.

Thanks

I need help with the following question. Solve for x

2(4-3x)/5 > 2(1+x)/3

In a class of 24 students, 13 like Mathematics, 9 like English and 3 like both.

Find the probability that a randomly selected student in this class likes neither Mathematics nor English.

Please show working out.

Thank you.

I need both these numbers to be correct to 4 significant figures:

133.953

77

Need help with calculating the following uncertainty.

y=abc^2=96.0000

a=3.00±0.10

b=2.00±0.07

c=4.00±0.09

Can you show working out please.

Appreciate it.

Need help with log question, using log laws to simplify:

(y+2)In(y^2)-In(y^y+2)+y+2

Can you help with determining which molecule has the higher boiling point, in terms of intermolecular forces: 3-methylbutanal and 2-methylpropanoic acid (Isobutyric Acid).

I know that 2-methylpropanoic acid has a higher boiling point, but I'm not sure what intermolecular forces are present in each molecule, resulting in one molecule having a higher boiling point.

Any comment or guidance would be appreciated.

Thank you.

Some links for some good free audio books about mind, phycology and philosophy.

Thanks in advanced

I need help finding a related text for distinctive voices. It can't be any of the following as we are studing them in class:

Martin Luther King, Jr - ‘I have a dream’

Severn Cullis-Suzuki - Address to the Plenary Session, Earth Summit

John F Kennedy - Inaugural Address

Jessie Street - ‘Is It To Be Back to the Kitchen?’

9th Earl Spencer - Eulogy for Princess Diana

Indira Gandhi, Prime Minister of India - ‘The True Liberation of Women’