Answers created by Rory H.

• Back to user's profile
• How do you find the derivative of #f(x)=sqrtx-5root3(x)#?
  
• What is the ratio of the energy of a photon to its frequency?
  
• An object carries a negative charge of about 10.0 C. How many excess electrons are on this object?
  
• Question #0ae43
  
• A 0.105-kg hockey puck moving at 24 m/s is caught and held by a 75-kg goalie at rest. With what speed does the goalie slide on the ice after catching the puck?
  
• How do you find the derivative of #-ln(x-(x^2+1)^(1/2))#?
  
• How do you find the slope and intercept of #y=3x+2#?
  
• Question #25b4e
  
• What is 8 percent of 4400?
  
• What is 3.2 light years equal to?
  
• How do you convert 0.0075 to a percent?
  
• Why do atoms emit or absorb light of specific wavelengths?
  
• What is 64% of 75?
  
• A circle's center is at #(2 ,6 )# and it passes through #(3 ,1 )#. What is the length of an arc covering #(pi ) /3 # radians on the circle?
  
• In fission, a nucleus of uranium–238, which contains 92 protons, divides into two smaller spheres, each having 46 protons and a radius of #5.9×10^-15 m#. What is the magnitude of the repulsive electric force pushing the two spheres apart?
  
• How do you differentiate #y = ln [x^4 sin^2 (x)]#?
  
• An astronaut with a mass of #75 kg# is floating in space. If the astronaut throws an object with a mass of #9 kg# at a speed of #1/8 m/s#, how much will his speed change by?
  
• Circle A has a center at #(1 ,3 )# and an area of #16 pi#. Circle B has a center at #(2 ,7 )# and an area of #28 pi#. Do the circles overlap?
  
• What is the cross product of #[3, 0, 5]# and #[3,-6,4] #?
  
• How much power is produced if a voltage of #2 V# is applied to a circuit with a resistance of #14 Omega#?
  
• How do you find the derivative of #cos^2(x^2-2)#?
  
• What percent of 80 is 20?
  
• A circle's center is at #(2 ,4 )# and it passes through #(3 ,1 )#. What is the length of an arc covering #(13pi ) /12 # radians on the circle?
  
• A motorcycle accelerates from 15 m/s to 20 m/s over a distance of 50 meters. What is its average acceleration?
  
• What is #(80x^4 + 48x^3 + 80x^2) -: 8x#?
  
• A charge of #36 C# passes through a circuit every #6 s#. If the circuit can generate #6 W# of power, what is the circuit's resistance?
  
• What is the slope-intercept form of the line passing through # (-1, 4) # and # (-4, 2)#?
  
• How do you differentiate #g(y) =(2x-5 )(x^2 + 3) # using the product rule?
  
• Question #3260c
  
• Question #09369
  
• Which has a greater ideal mechanical advantage, a ramp that is 12 m long and 2 m high or a ramp that is 6 m long and 2 m high?
  
• If a rocket with a mass of 2900 tons vertically accelerates at a rate of # 2/9 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 6 seconds?
  
• How do you solve #3x^2-5x+7=0#?
  
• How do you calculate the frequency of light if you know its wavelength?
  
• A charge of #2 C# is at the origin. How much energy would be applied to or released from a # 3 C# charge if it is moved from # ( -4, 0 ) # to #( -6 ,-3 ) #?
  
• A charge of #16 C# is passing through points A and B on a circuit. If the charge's electric potential changes from #28 J# to #4 J#, what is the voltage between points A and B?
  
• What is the gravitational potential energy of a # 9 kg# object on a shelf # 5/6 m # high?
  
• Question #ace79
  
• How do you factor the expression #4x^2 + 14x + 6#?
  
• How do you graph the derivative of #f(x) = x^2#?
  
• What is the slope of a line perpendicular to the line whose equation is #y = -2/3x-5#?
  
• The force applied against a moving object travelling on a linear path is given by #F(x)= x^2+e^x #. How much work would it take to move the object over #x in [3,7] #?
  
• Question #22b1a
  
• What evidence do we have for the change in size of the universe?
  
• How much power is produced if a voltage of #8 V# is applied to a circuit with a resistance of #16 Omega#?
  
• Question #fd2f4
  
• How do you find the center and radius of the the circle #x^2 + y^2 + 6/5x - 8/5y - 8 = 0#?
  
• Why is the Hubble Space Telescope important to modern astronomy?
  
• Question #6f2c6
  
• What is the equation of the line that is normal to #f(x)= sqrt( x^3-3x+2) # at # x=5 #?
  
• How do you write the explicit formula that represents the geometric sequence -2, 8, -32, 128?
  
• A charge of #24 C# passes through a circuit every #9 s#. If the circuit can generate #8 W# of power, what is the circuit's resistance?
  
• What torque would have to be applied to a rod with a length of #1 m# and a mass of #2 kg# to change its horizontal spin by a frequency of #6 Hz# over #4 s#?
  
• What is the gravitational potential energy of a # 16 kg# object on a shelf # 5 m # high?
  
• How do you find the polar coordinate for (-12, -12)?
  
• How do you simplify # 7i+(3-16i) #?
  
• An object with a mass of #12 kg# is on a plane with an incline of # - pi/6 #. If it takes #9 N# to start pushing the object down the plane and #8 N# to keep pushing it, what are the coefficients of static and kinetic friction?
  
• What is the area of a triangle with the vertices at (-1,-1) , (3,-1) . and (2,2)?
  
• How much work would it take to push a # 5 kg # weight up a # 15 m # plane that is at an incline of # pi / 4 #?