Recent content by marcuss

a particle moves along the curve xy=10, x=2 and dy/dt=3, what is the value of dx/dt? i tried product rule and got x*y*dy/dt + y*x*dx/dt = 0 and the answer that i get doesn't appear on the multiple choice answers a)-5/2 b)-6/5 c) 0 d) 4/5 e) 6/5 i don't know what I am...

Homework Statement the function f(x)=tan(3^x) has one zero in the interval [0,1.4]. The derivative at this point is The Attempt at a Solution f'(x)= sec^2(3^x)*x3^(x-1) and i really can't seem to get a zero from that because i really don't know where to start and if I am...

Chemistry pH problem help please NaOH and HCl Calculate the pH after the following total volumes of .32M HCl have been added to 25 mL of 0.16M NaOH a. 0 mL c. 12.4 mL e. 12.6 mL b. 1 mL d. 12.5 mL f. 15.0 mL A. i have answered correctly but i...

Drill problem, linear speed of drill bit help please [b]1. For a 12.7mm diameter drill bit turning at a constant 1250 rev/min find a) the maximum linear speed of any part of the bit; b) the maximum radial acceleration of any part of the bit [b]2. i switched the revs per minutes into...

their kinetic energies were the same at the finish line

[b]1. The one sled has a mass of 2m and the other sled has a mass of m show that sled one with mass 2m has a momentum of root2 compared to the sled with mass m. The only formulas that i could think to use were p=mv and sigmaF=dp/dt and i can't seem to find a way to relate them to get an...

many thanks to both of u

Base of the system problems, please help What is the base of the system in which 121 represents the same number as the decimal number 324? [b] I need someone to tell what this thing is saying thank you.

[b]1. A certain reaction has an activation energy of 54.0 kJ/mol. As the temperature is increased from 22degrees celsius to a higher temperature, the rate constant increases by a factor of 7.00. Calculate the higher temperature. [b]2. ln(k)=-Ea/RT + ln(A) [b]3. i don't think that i...

did u use the double angle formulas of sin2u=2sinucosu and cos2u=1-2sin^2u?

did u try F.O.I.L?(first outer inner last) i believe that is all it is asking

Need Help!-Chemistry kinetics [b]1. Consider the following initial rate data for the decomposition of compound AB to give A and B: [AB]o(mol/L) Initial Rate(mol/L*s) .200 3.20*10^-3 .400 1.28*10^-2 .600...