Answers created by reudhreghs

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• How do you factor the trinomial #a^3-5a^2-14a#?
  
• Question #bfc9a
  
• Question #8e9bb
  
• What is the name given to the polymers that can be melted and reshaped or heated and bent?
  
• How do oceans affect climate change?
  
• Which has the largest radius, magnesium (Mg), silicon (Si), sulfur (S), or sodium (Na)?
  
• Question #99ddd
  
• What is the perimeter of a triangle with corners at #(7 ,3 )#, #(9 ,5 )#, and #(3 ,3 )#?
  
• How do you divide #( 2i+5) / ( -7 i + 7 )# in trigonometric form?
  
• Question #8f0bd
  
• How do you find the domain of #g(x)= x/(x^2-5x)#?
  
• What is the domain and range of #(x+3)/(x^2+9)#?
  
• Question #43205
  
• Question #529dd
  
• Question #83e6f
  
• How do you integrate #int (x-3x^2)/((x+9)(x-5)(x-7)) # using partial fractions?
  
• How do you simplify #(3a^4b^2)^3#?
  
• How do you differentiate #y=x^-2cosx-4x^-3#?
  
• Question #2ce41
  
• How many ways can 4 students be arranged in a row?
  
• How do you find the tangent line of #f(x) = 3x/sinx^2 # at x=5?
  
• How do you find the equation of the tangent line to the curve #y = x sin x# at the point where x = π/2?
  
• How do you find the domain and range of #y=x^2 - 5#?
  
• Question #93e1c
  
• Question #29aac
  
• Question #e6ebb
  
• Question #e74c7
  
• A model train, with a mass of #6 kg#, is moving on a circular track with a radius of #2 m#. If the train's rate of revolution changes from #2 Hz# to #6 Hz#, by how much will the centripetal force applied by the tracks change by?
  
• IUPAC name of CHF2CBrClF?
  
• Question #3ad94
  
• Question #03070
  
• Are there chemical formulas for singular genes within DNA?
  
• Question #f61b1
  
• Question #723f7
  
• Question #b1223
  
• Question #e461c
  
• Question #9fd43
  
• A balanced lever has two weights on it, the first with mass #14 kg # and the second with mass #9 kg#. If the first weight is # 2 m# from the fulcrum, how far is the second weight from the fulcrum?
  
• How do you multiply #e^(( pi )/ 8 i) * e^( 3 pi/2 i ) # in trigonometric form?
  
• How do you find the antiderivative of #f(x)=8x#?
  
• Two objects have masses of #9 MG# and #5 MG#. How much does the gravitational potential energy between the objects change if the distance between them changes from #500 m# to #20 m#?
  
• Two objects have masses of #4 MG# and #8 MG#. How much does the gravitational potential energy between the objects change if the distance between them changes from #150 m# to #450 m#?
  
• A box with a mass of 14.8 kg sits on the floor. How high would you have to lift box to for it to have a gravitational potential energy of 355 J?
  
• A solid disk, spinning counter-clockwise, has a mass of #7 kg# and a radius of #8 m#. If a point on the edge of the disk is moving at #2 m/s# in the direction perpendicular to the disk's radius, what is the disk's angular momentum and velocity?
  
• What are some common mistakes students make with isotope notation?
  
• An electric toy car with a mass of #4 kg# is powered by a motor with a voltage of #2 V# and a current supply of #7 A#. How long will it take for the toy car to accelerate from rest to #2 m/s#?
  
• A charge of #24 C# passes through a circuit every #6 s#. If the circuit can generate #12 W# of power, what is the circuit's resistance?
  
• A charge of #24 C# passes through a circuit every #6 s#. If the circuit can generate #12 W# of power, what is the circuit's resistance?
  
• An electric toy car with a mass of #3 kg# is powered by a motor with a voltage of #7 V# and a current supply of #1 A#. How long will it take for the toy car to accelerate from rest to #5/3 m/s#?
  
• A charge of #24 C# passes through a circuit every #12 s#. If the circuit can generate #36 W# of power, what is the circuit's resistance?
  
• How much energy is needed to power an electric vehicle?
  
• An electric toy car with a mass of #15 kg# is powered by a motor with a voltage of #8 V# and a current supply of #3 A#. How long will it take for the toy car to accelerate from rest to #4 m/s#?
  
• A charge of #18 C# passes through a circuit every #12 s#. If the circuit can generate #4 W# of power, what is the circuit's resistance?
  
• A model train with a mass of #2 kg# is moving along a track at #36 (cm)/s#. If the curvature of the track changes from a radius of #6 cm# to #3 cm#, by how much must the centripetal force applied by the tracks change?
  
• Question #dc67c
  
• An electric toy car with a mass of #8 kg# is powered by a motor with a voltage of #9 V# and a current supply of #4 A#. How long will it take for the toy car to accelerate from rest to #8/3 m/s#?
  
• What is #f(x) = int sec^2x- cosx dx# if #f((5pi)/4) = 0 #?
  
• How does positron decay work?
  
• How should you write nuclear equations for beta decay?
  
• Given the following chart, what will the rock contain after 40.000 years or 2 half-lives?
  
• What is the daughter nucleus that is produced when Uranium-235 undergoes alpha decay?
  
• How many neutrons are in an atom of #"_86^222Rn#?
  
• What is the wavelength for radio waves with frequency #3 times 10^9#?
  
• A charge of #1 C# is at #(3,-2)# and a charge of #-3 C# is at #( -4,-1) #. If both coordinates are in meters, what is the force between the charges?
  
• Two charges of # -2 C # and # 6 C# are positioned on a line at points # 3 # and # 4 #, respectively. What is the net force on a charge of # -5 C# at # 0 #?
  
• A ball with a mass of #2 kg# moving at #3 m/s# hits a still ball with a mass of #10 kg#. If the first ball stops moving, how fast is the second ball moving? How much kinetic energy was lost as heat in the collision?
  
• Question #a7773
  
• What force will a proton experience in a uniform electric field whose strength is #2.00 * 10^5# newtons per coulomb?
  
• Why is it inaccurate to say "CO is 50 percent oxygen"?
  
• How do you integrate #int dx#?
  
• What is the moment of inertia of a pendulum with a mass of #7 kg# that is #3 m# from the pivot?
  
• A charge of #24 C# passes through a circuit every #18 s#. If the circuit can generate #16 W# of power, what is the circuit's resistance?
  
• An electric toy car with a mass of #2 kg# is powered by a motor with a voltage of #9 V# and a current supply of #7 A#. How long will it take for the toy car to accelerate from rest to #3/2 m/s#?
  
• A projectile is shot from the ground at an angle of #( pi)/3 # and a speed of #7 m/s#. Factoring in both horizontal and vertical movement, what will the projectile's distance from the starting point be when it reaches its maximum height?
  
• A spring with a constant of #6 (kg)/(s^2)# is lying on the ground with one end attached to a wall. An object with a mass of #8 kg # and speed of # 5 m/s# collides with and compresses the spring until it stops moving. How much will the spring compress?
  
• How do you differentiate #f(x)=(cosx-x)/(sin3x-x^2)# using the quotient rule?
  
• How do you solve #4\cos x = 1+ 2\cos x#?
  
• What does it mean to say Kepler's laws are empiracle in nature?
  
• How do you find the derivative of #y= cos^3 w + cos(w^3)#?
  
• How do you find all zeros of #g(t)=t^5-6t^3+9t#?
  
• A solid disk, spinning counter-clockwise, has a mass of #12 kg# and a radius of #6 m#. If a point on the edge of the disk is moving at #8 m/s# in the direction perpendicular to the disk's radius, what is the disk's angular momentum and velocity?
  
• If the tangent line to #y = f(x)# at #(4,3)# passes through the point #(0,2)#, Find #f(4)# and #f'(4)#? An explanation would also be very helpful.
  
• A model train, with a mass of #8 kg#, is moving on a circular track with a radius of #1 m#. If the train's rate of revolution changes from #5/8 Hz# to #5/4 Hz#, by how much will the centripetal force applied by the tracks change by?
  
• A model train with a mass of #4 kg# is moving along a track at #8 (cm)/s#. If the curvature of the track changes from a radius of #54 cm# to #27 cm#, by how much must the centripetal force applied by the tracks change?
  
• A model train, with a mass of #6 kg#, is moving on a circular track with a radius of #4 m#. If the train's kinetic energy changes from #24 j# to #48 j#, by how much will the centripetal force applied by the tracks change by?
  
• How do you differentiate #y=(v^3-2vsqrtv)/(v)#?
  
• How do you multiply and simplify #\frac { 12} { 5x } \times \frac { x ^ { 3} } { 12x }#?
  
• Question #2019c
  
• What is the oxidation number of oxygen in peroxides?
  
• How do you determine whether the sequence #1/8, 1/4, 1/2, 1,...# is geometric and if it is, what is the common ratio?
  
• Given the specific heat of lead is 0.129 J/g#*#K and that it takes 93.4 J of energy to heat a sample of lead from 22.3°C to 40.°C, how do you find the mass of the lead.?
  
• How do you graph #y=4x-12# using intercepts?
  
• What is the spectroscopic method of analysis?
  
• How do you solve #\log _ { 9} ( 2x + 5) = \log _ { 9} 5x#?
  
• How do you evaluate #arcsin(0)# without a calculator?
  
• How do you find the derivative of #f(x)=2x^3-x^2+3x#?
  
• A balanced lever has two weights on it, the first with mass #5 kg # and the second with mass #8 kg#. If the first weight is # 4 m# from the fulcrum, how far is the second weight from the fulcrum?
  
• What is the second derivative of #f(x)=-csc^2x #?
  
• What is the slope and y-intercept of the line #4x-5y=20#?
  
• When 0.500 mole of sodium is produced according to the reaction #2NaN_3(s) -> 3N_2(g) + 2Na(s)#, how many moles of nitrogen gas are also produced?
  
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