Answers created by Pablocito

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• How a pure intrinsic semiconductor can be transformed into n-type and p-type semiconductor?
  
• A truck driving along a highway road and has a large quantity of momentum. A car with half the mass but twice the speed would have?
  
• What is the distance between two students (their radius) if they each weigh 110kg and 48kg and the force of attraction between them was 8.44 x 10^-7 N?
  
• How do you evaluate #arcsin(sqrt 3/2)#?
  
• The angle of projection for which maximum height is equal to the range covered will be? a)76 deg. b)tan-4. c)both
  
• In refractive index of glass slab if angle of incidence to normal is 20 then the angle of reflection and angle of emergence is 30 is it the right answer???
  
• Do large damping force on a body means large change in amplitude why?
  
• Question #e1b17
  
• Solve for #x,y and z# given that: #2x-y+2z=-7 ;color(white)("d") -x+2y-4z=5 ;color(white)("d")x+4y-6z=-1 ?#
  
• Question #a5103
  
• Question #89cdd
  
• How do you solve the following system?: #-x -5y =3, x -16y = -42#
  
• How do you solve using the completing the square method # 0=x^2-3x-6#?
  
• How do you write a slope-intercept equation for a line perpendicular to 3x + y - 2 = 0 with point (2,1)?
  
• How do you find the roots, real and imaginary, of #y= -3x^2-4x+(2x- 1 )^2 # using the quadratic formula?
  
• Question #268d6
  
• Question #7c4fd
  
• Integral of [x/(3-x)^1/2]?
  
• How do you evaluate #int sin(x^2)dx# from -1 to 2?
  
• Question #9db31
  
• A triangle has two corners with angles of # pi / 12 # and # pi / 12 #. If one side of the triangle has a length of #2 #, what is the largest possible area of the triangle?
  
• Question #ffc86
  
• How do you evaluate #f(x) = -(2)^x+3# for #f(4)#?
  
• How do you find the focus, vertex, and directrix of #x^2+10x+4y+33=0#?
  
• How do you solve #\frac { 1} { \sin y - 1} - \frac { 1} { \sin y + 1} = - \sec y#?
  
• How to solve this ? Find a and b ?
  
• If #\frac { 3} { 2x } + \frac { 1} { 5} = 0,# what is the value of x?
  
• How do you find the vertex and intercepts for #x = 1/-32y^2#?
  
• Question #8a8fa
  
• A train leaves a station and travels north at a speed of 75 mph. Two hours later, a second train leaves on a parallel track and travels north at 105 mph. How far from the station will they meet?
  
• Why is it difficult to use the law of conservation of energy to calculate the effects of a collision?
  
• How would you determine the potential difference between two charged parallel plates that are 0.20 cm apart and have an electric field strength of 6.0 V/cm?
  
• Question #87c39
  
• A spring is hung vertically. It is loaded with 50 g mass and allowed to oscillate. Calculate the frequency of oscillation when the spring is loaded with 150 g which exceeds 100m?
  
• Question #7e46d
  
• An object is at rest at #(7 ,6 ,4 )# and constantly accelerates at a rate of #7/4 m/s^2# as it moves to point B. If point B is at #(5 ,5 ,7 )#, how long will it take for the object to reach point B? Assume that all coordinates are in meters.
  
• A block of mass 5 kg is moving horizontally at a speed of 1.5m/s. a perpendicular force of 5N acts on it for 4sec. what will be the displacement of the block from the point when the force start acting?
  
• How do you find the derivative of #1 / (2*sqrt(x+1))#?
  
• How do you use the chain rule to differentiate #f(x)=ln(cosx)#?
  
• What is the vertex form of #y=-x^2+13x+1#?
  
• An object with a mass of #8 kg# is on a plane with an incline of #pi/12 #. If the object is being pushed up the plane with # 8 N # of force, what is the net force on the object?
  
• Question #f624c
  
• Why is resonance important in musical instruments?
  
• How do you find the LCD for #\frac { - 11} { 20}# and #\frac { 13} { 50}#?
  
• How do you solve #9s + 14= - 22?#
  
• Why is a model made to be simpler than the thing that it represents?
  
• How do you graph #f(x)= |x-2|+2#?
  
• Question #aaeb4
  
• An object with a mass of #6 kg# is on a plane with an incline of #pi/12 #. If the object is being pushed up the plane with # 2N # of force, what is the net force on the object?
  
• Question #a4fd4
  
• What are the two types of frictional forces that act to prevent or slow motion?
  
• Question #65db0
  
• Question #380f3
  
• Question #346dd
  
• What is the equation of the parabola with a focus at (-2, 6) and a vertex at (-2, 9)?
  
• How do you find the second derivative of #y=-5/(x+1)#?
  
• What is #int1/(x^2+5)# ?
  
• Find average friction?
  
• An object with a mass of #6 kg# is on a plane with an incline of # - pi/4 #. If it takes #24 N# to start pushing the object down the plane and #9 N# to keep pushing it, what are the coefficients of static and kinetic friction?
  
• How can an object have a negative acceleration while speeding up and a positive acceleration while slowing down? Please explain using easy terms, I do not understand the way my textbook explains it.
  
• How can an object have a negative acceleration while speeding up and a positive acceleration while slowing down? Please explain using easy terms, I do not understand the way my textbook explains it.
  
• How can an object have a negative acceleration while speeding up and a positive acceleration while slowing down? Please explain using easy terms, I do not understand the way my textbook explains it.
  
• How can an object have a negative acceleration while speeding up and a positive acceleration while slowing down? Please explain using easy terms, I do not understand the way my textbook explains it.
  
• Question #50d12
  
• An adult lion standing in Las Vegas has a mass of 210 kg. How much force is exerted downward on the lion by gravity (i.e., the weight)? How much normal force pushes up on the lion?
  
• How can an object have a negative acceleration while speeding up and a positive acceleration while slowing down? Please explain using easy terms, I do not understand the way my textbook explains it.
  
• Question #19739