Answers created by Alexander L.

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• Please help solve this, I can't come up with a solution. The question is to find f? Given #f:(0,+oo)->RR# with #f(x/e)<=lnx<=f(x)-1 , x in (0,+oo)#
  
• After a system is added 40-J heat, the system does 30-J work. How do you find the change of the system’s internal energy?
  
• Question #483c3
  
• What do lattice theorists do?
  
• Question #bd5cc
  
• Question #5fabf
  
• How do you determine whether the sequence #3, 5/2, 2, 3/2, 1,...# is arithmetic and if it is, what is the common difference?
  
• What instrument does an astronomer use to determine the spectrum of a star? Why is using this instrument better than using only a telescope to view the spectrum?
  
• What general trend is found in Period 3 as the elements are considered in order of increasing atomic number?
  
• How often is current reversed in the loops of a simple DC electric motor?
  
• Evaluate the limit of the indeterminate quotient?
  
• Question #aa46e
  
• How do you find all the factors of 28?
  
• How do you differentiate #f(x)=csc^3(2x)#?
  
• How do you graph #y=(x^2-2x)/(2x+3)# using asymptotes, intercepts, end behavior?
  
• For what values of x, if any, does #f(x) = 1/((x-3)(x-2)) # have vertical asymptotes?
  
• How do you solve using the completing the square method #x^2+10x-4=0#?
  
• Question #a20f5
  
• How do you find the domain and range of #p(x)=x^2-2x+10#?
  
• What type of technology might be used to build a low-carbon economy?
  
• What is #|| <-1, 4, 2 > - < -2 , -7, 3 > ||#?
  
• Triangle A has an area of #24 # and two sides of lengths #8 # and #15 #. Triangle B is similar to triangle A and has a side with a length of #12 #. What are the maximum and minimum possible areas of triangle B?
  
• Question #376ba
  
• Is "world" a countable noun?
  
• If #f(x)= cos 4 x # and #g(x) = -3x #, how do you differentiate #f(g(x)) # using the chain rule?
  
• Why do people and animals breath heavily after running a race?
  
• Question #2eecb
  
• An electrically powered pump is used to pull water out of a well. In the course of an afternoon, the pump does 8.3 kJ of work lifting water out of a well?
  
• How do you use the definition of a derivative to find the derivative of #f(x) =e^x#?
  
• How do you differentiate #f(x) = ln(sqrt(arcsin(e^(2-x)) ) # using the chain rule?
  
• Question #619bf
  
• Question #1fa6c
  
• How does beta decay work?
  
• Question #d3a53
  
• What is the kinetic energy of an object with a mass of # 5 kg# that has been in freefall for # 4 s#?
  
• How does pollution of the oceans affect the world?
  
• Is beta decay continuous?
  
• What is the projection of #<4,9,1 ># onto #<-1,7,2 >#?
  
• Question #e23ab
  
• Question #3f817
  
• How do you find #abs( 1-isqrt3 )#?
  
• A container with a volume of #25 L# contains a gas with a temperature of #150^o K#. If the temperature of the gas changes to #320 ^o K# without any change in pressure, what must the container's new volume be?
  
• How do you solve #2e^(12x) = 18#?
  
• How do you find the definite integral for: #xcos(5x^2) dx# for the intervals #[0,4sqrtpi]#?
  
• What is the gravitational potential energy of a # 36 kg# object on a shelf # 7/8 m # high?
  
• How much power is needed to accelerate an object with a mass of #4 kg# and a velocity of #8 m/s# at a rate of #2 m/s^2#?
  
• How do you implicitly differentiate # y-(3y-x)^2-1/y^2=x^3 + y^3- xy#?
  
• Is 199 a prime number?
  
• Question #86099
  
• How would a black hole affect earth?
  
• Why is the earth tilted? How does this tilt effect our seasons?
  
• What is #f(x) = int 1/(x-3)-x/(x-2) dx# if #f(-1)=6 #?
  
• Question #cb6b8
  
• What is sound energy?
  
• Question #849c4
  
• What two things does gravitational potential energy depend on?
  
• Question #f1260
  
• Is #f(x)=(x-3)(x+3)(x-2)# increasing or decreasing at #x=3#?
  
• How do you find the conjugate of the complex number #5 + 3i#?
  
• The figure shows three forces applied to a trunk that moves leftward by 3.34 m over a frictionless floor. The force magnitudes are F1 = 5.39 N, F2 = 8.74 N, and F3 = 2.52 N, and the indicated angle is θ = 60°. ?
  
• What is the angular momentum of a gyroscope that is a solid cylinder with a radius of .24 m, a mass of 15 kg and a angular velocity of 140 rad/sec?
  
• Question #369d9
  
• Question #e4aa1
  
• How do you find the amplitude and period of #y=0.5cos2pix#?
  
• How do you graph and find the discontinuities of #(x^2-1)/(x^2+4)#?
  
• How do you solve this quadratic equation using the square root property #(x+6)^2 = 121#?
  
• How do you solve #cos 2x- sin^2 (x/2) + 3/4 = 0#?
  
• What nuclear decay can be stopped by aluminum?
  
• Question #9f171
  
• Question #f3570
  
• How do you solve # 11 ^n − 8 − 5 = 54 #?
  
• What is the domain and range of #f(x)= x^2 - 6x + 8#?
  
• How do you factor #18x^2-27x+4#?
  
• What are polar coordinates used for in real life?
  
• How do you find the average rate of change for the function #f(x) = x^3 − 3x^2# on the indicated intervals [0,10]?
  
• How do you graph #x= -3(y-5)^2 +2#?
  
• Why is angular momentum perpendicular?
  
• Question #f4a49
  
• Question #f538f
  
• Question #90a50
  
• How can vectors be represented?
  
• What is the Rutherford's atomic model?
  
• A cyclist increases his kinetic energy from 11 00 J to 5 200 J in 12 s. How can I calculate his power output during this time?
  
• Question #8f009
  
• Question #219fc
  
• What is kinetic energy?
  
• Is resistance the same as impedance in an RC circuit?
  
• Question #b6edb
  
• How does alternating current transfer energy?
  
• Question #6f1d7