A point moves along the x-axis, and its x-coordinate after t sec is x = 4t + 16. (Assume that x is in centimeters.) (a) What is the velocity? in cm/sec

40,653 results
  1. Calculus

    A particle moves along the curve y = sqr(1+x^3). As it reaches the point (2,3), the y-coordinate is increasing at a rate of 4 cm/s. How fast is the x-coordinate of the point changing at that instant.

  2. (Pre-Algebra) A

    Lesson 7: Coordinate Plane Essential Algebra Readiness(Pre-Algebra) A Unit 4: Real Numbers and the Coordinate Plane Has anyone done the Coordinate Plane Practice AND assessment? 1. Which point is located at (-3, -2)? (1 point) •C •D •F •G 2. Which

  3. algebra

    1.What is the slope of the function shown on the graph? A line is graphed on a four quadrant coordinate plane. The x-axis and the y-axis go from negative 10 to 10 in increments of 1. The line passes through (0, 7) and (4, 2). A−56 B−54 C−65 D−45

  4. math

    Point A(8,-10) is reflected over the y-axis. Write the coordinate of A'. a) (-8,-10) b) (8,10) c) (8,-10) d) (-8,10)

  5. math

    Which point has the coordinates(-0.5,- 2.5 )? A.point A B.point B*** C.point C D.point D What are the coordinates of point C? A. (-1, 2) B. (- 2,2) C. ( 1.5 ,2)*** D. (- 1.5, 2) Which statement is true about the ordered pair (1.5,- 0.5) ? A. The

  6. Calculus

    Solve: The posistion of a particle moving along a coordinate line is s=sqrt(5+4t), with s in meters and t in seconds. Find the particle's velocity at t=1 sec. A) 2/3 m/sec B) 4/3 m/sec C) -1/3 m/sec D) 1/6 m/sec Thank you!

  7. physics

    A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure. The length of the arc ABC is 214 m, and the car completes the turn in 40.0 s (Figure shows coordinate plane with point A on -y axis point C on

  8. college calculus

    1) each side of a square is increasing at a rate of 6cm/s. At what rate is the area of the square is 16 cm^2? 2)the radius of a sphere is increasing at a rate of 4mm/s.How fast is the volume increasing when the diameter is 80mm? 3)A particle moves along

  9. math

    Antonio jogs 2 laps every 5 minutes. Which point represents this relationship? On a coordinate plane, a graph titled Antonio's Lap Times has Number of laps on the x-axis and Number of minutes on the y-axis. Point A is (1, 10), point B is (2, 5), point C is

  10. Math

    1. A small town is represented on a graph in the coordinate plane. The coordinates of the post office are left-parenthesis 2 comma 3 right-parenthesis. Which other building is in the same quadrant? (1 point) a, bank left-parenthesis negative 3 comma 1

  11. Calculus

    Line l is tangent to the graph of y= x - x²/500 at point Q & it crosses the y-axis at (0, 20) a). Find the x-coordinate of point Q b. Write an equation for line l c) Suppose the graph of y=x-x^2/500, where x and y are measured in feet, represents a hill.

  12. Physics

    A particle leaves the origin with a velocity of 7.2 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (3.0 – 2.0 ˆi ˆj ) m/s2. At the instant the particle moves back across the x axis (y = 0), what is the value

  13. Math

    Find all points on the x-axis of a Cartesian coordinate system that are 20 units from the point (0,12) The point (0,12) would just be 12 points up on the y axis, so wouldn't I just count 20 spaces to the left and right so it would be (20, 12) and (-20,

  14. Calculus

    A point moves along the curve y=(x-2)^2 such that the x coordinate is increasing at 2 units per second. At the moment x=1, how fast is its y coordinate changing.

  15. Geometry

    1) find the coordinate of the image of point (1,2) translated left 2 units and reflected over the x -axis 2) Find the coordinate of the image of the point (2, -4) reflected over the x-axis 3) Determine the midpoint of the segment whose endpoints are A(7,

  16. calc

    A particle moves along the curve below. y = sqrt(8 + x^3) As it reaches the point (2, 4), the y-coordinate is increasing at a rate of 5 cm/s. How fast is the x-coordinate of the point changing at that instant?

  17. Geometry

    Given the following information, can you find the coordinates of the unknown point? Explain. Two points are 14 units apart. The first point is located at (0,7). (1 point) The unknown point is (12, 0). Substituting into the Pythagorean Theorem gives

  18. math

    a point has coordinates(0,3) where is it located in the coordinate plane A)x-axis B)y-axis C)quadrant3 D)quadrant4

  19. geometry help!! answer all questions!! please

    1) Write the translation that maps P(-4, 2) onto the point P ' (-1, -1)? 2) What are the coordinates of the reflection of the point (5,1) over the line y = x? 3) The coordinate notation for reflection over the y-axis is -?-. 4) If a translation has a

  20. Calculus

    Please check my answers! My teacher never gave us the answer sheet so I have no idea what to study TT (also please give the correct answers to the ones I got wrong ^0^) 1. lim as x-> inf. of (9x-x^2-7x^4)/(x^3+12x) 9 -7/12 -7 DNE

  21. physics

    Two point charges, 4.0×10-6 C and -1.0×10-6 C, are located on the x axis at = -1.0 cm and = 3.0 cm. (a) Determine the electric field at the origin. (b)Determine the x coordinate of a point on the positive x axis where the electric field is zero; i.e., a

  22. Trig

    A railroad tunnel is shaped like a semiellipse as shown below. A semiellipse is shown on the coordinate plane with vertices on the x axis and one point of intersection with the positive y axis. The height of the tunnel at the center is 27 ft and the

  23. Math

    1. How can you represent a loss of 24 dollars as an integer? (1 point) –42 –24 +24 2. How can you represent a baby growing 13 inches in a year as an integer? (1 point) –13 0 + +13 3. What is the integer at Point L? (1 point) –5 –4 –3 –2 4.

  24. Calculus

    Given f '(x) = (x − 4)(4 − 2x), find the x-coordinate for the relative maximum on the graph of f(x). a) 12 m/sec; 22 m/sec^2 b) 22 m/sec; 18 m/sec^2 c) 22 m/sec; 6 m/sec^2 d) 14 m/sec; 3 m/sec^2

  25. physics

    Two point charges are placed along a horizontal axis with the following values and positions: +3 µC at x = 0 cm and - 12 µC at x = 35 cm. At what point (the coordinate) along the x axis is the electric field zero? Expess the answer (in cm) with one

  26. physics

    A 41.0-kg body is moving in the direction of the positive x axis with a speed of 306 m/s when, owing to an internal explosion, it breaks into three pieces. One part, whose mass is 8.0 kg, moves away from the point of explosion with a speed of 326 m/s along

  27. physics, help urgent!

    charge Q = +4.5 ƒÝC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 ƒÝC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the

  28. physics

    three point particles are fixed in place in an xy plane. Particle A has mass mA = 3 g, particle B has mass 2.00mA, and particle C has mass 3.00mA. A fourth particle D, with mass 4.00mA, is to be placed near the other three particles. What (a) x coordinate

  29. Algebra

    Hi, can you please check my answer, this is one week overdue. At the halftime show, a marching band marched in formation. The lead drummer started at a point with coordinates (-2,-5) and moves 3 steps up and 1 step right. a. Write a rule to describe the

  30. Science

    if two waves are traveling at the same speed along the x axis will the one with the longer wavelength have the larger or smaller freq ? explain in terms of the number of wavelengths that pass a given point on the x axis in 1 sec My answer: smaller But how

  31. Physics

    A point charge Q1=-2µC is located at x=0, and a point charge Q2=-8µC is placed at on the x -axis of a cartesian coordinate system.The goal of this problem is to determine the electric field,E(x)=E(x)x^ , at various points along the -axis. (a)What is E(x)

  32. calc

    If a point moves on the hyperbola x^2-4y^2=36 in such a way that x-coordinate increases at constant rate of 20 units per second. How fast is the y coordinated changing at point (10,4)? please help!!! Differentiating implicitly with respect to t, 2 x dx/dt

  33. Pre Calc

    Juliet and Mercutio are mov- ing at constant speeds in the xy-plane. They start moving at the same time. Juliet starts at the point (0, − 6) and heads in a straight line toward the point (10,5), reaching it in 10 sec- onds. Mercutio starts at (9, − 14)

  34. Calculus

    A particle moves along the curve y = sqr(1+x^3). As it reaches the point (2,3), the y-coordinate is increasing at a rate of 4cm/s. How fast is the x-coordinate of the point changing at that instant?

  35. Algebra--please help!

    Here's my question. Please walk me through it so I can fully understand it. Jon begins jogging at a steady 3 meters/sec down the middle of Lane #1 of a public track. Laaura starts even with him in the center of Lane #2 but moves at 4 meters/sec. At the

  36. Urgent algebra help!

    Here's my question. Please walk me through it so I can fully understand it. Jon begins jogging at a steady 3 meters/sec down the middle of Lane #1 of a public track. Laaura starts even with him in the center of Lane #2 but moves at 4 meters/sec. At the

  37. Math

    Let A(2,3) be a fixed point. A point P moves such that PA is equal to the distance of P from the y-axis. Find the equation of the locus of P PA2 = (x-x1)2 + (y-y1)2 +??? = (x-2)2 + (y-3)2 +??? I tried solving it using the distance formula but I'm still

  38. calculus

    A particle moves along the curve y=square sqrt 1+x^3. As it reaches the point (2,3), the y-coordinate is increasing ata a rate of 4cm/s. How fast is the x-coordinate of the point changing at that instant?

  39. Algebra--help really needed!

    I'm having some trouble with my algebra homework. Please walk me through the question completely and give me the answer so I can fully understand it if I would ever need to solve a similar problem. Here's the problem: #1: Jon begins jogging at a steady 3

  40. Math

    19. Point A(4, 2) is translated according to the rule (x, y) (x + 1, y – 5) and then reflected across the y-axis. a) In which quadrant of the coordinate plane is point A located? b) What are the coordinates of translated point A’? In which quadrant of

  41. physics help

    The magnitude of the velocity of a particle which starts from rest 2 ft below the origin when t = 0 and moves along a vertical axis is directly proportional to the time after starting. The displacement of the particle during the time interval from t = 1

  42. math

    a point has coorindate (-3,0) where is it located in the coordinate plane? A)x-axis B)y-axis C)quadrant 1 d)quadrant4

  43. Algebra

    A line intersects the graph of y= x^2 twice. One point has an x- coordinate of -4, and the other point has an x-coordinate of 2. A) Draw a sketch of both graphs, and find the equation of the line. B) Find the measure of the angle that the line makes with

  44. Math

    A line intersects the graph of y=x^2 twice. One point has an x-coordinate of -4, and the other point has an x- coordinate of 2. A. Find the equation of the line. B. Find the measure of the angle that the line makes with the x-axis.

  45. physics charges. please help!

    A charge Q = +4.5 uC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 uC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the

  46. mathematics

    The coordinates of point A on a coordinate grid are (−2, −3). Point A is reflected across the y-axis to obtain point B and across the x-axis to obtain point C. What are the coordinates of points B and C? B(2, 3) and, C(−2, −3) B(−2, −3) and

  47. physics

    Two spheres are mounted on identical horizontal springs and rest on a frictionless table, as in the drawing. When the spheres are uncharged, the spacing between them is 0.05 m, and the springs are unstrained. When each sphere has a charge of +1.6 £gC, the

  48. physics

    A car starts from rest and moves along x-axis with constant acceleration (5m/secondsquare) fr 8 sec. If it then countinues with constant velocity. What distance will the car cover in 12 sec since it started frm rest. plz anybody explain me

  49. Math, Related Rates

    Consider the hyperbola y = 1/x and think of it as a slide. A particle slides along the hyperbola so that its x-coordinate is increasing at a rate of f(x) units/sec. If its y-coordinate is decreasing at a constant rate of 1 unit/sec, what is f(x)? -I

  50. College Math

    2008 (2nd)Course2-4.1 We are to find a function f(x) such that its derivative is x^2+x-1 and the graph of y=f(x) is tangent to the straight line y=x+1. First we find the coordinates of the point at which y=f(x) and y=x+1 are tangent.Since the slope of the

  51. Math

    Point R has coordinates baby boy is reflected across the x axis and then translated 5 Points to the right a great Point s create an expression that represents the y coordinate of s

  52. suncrest high school

    maths give the coordinate for:point A (-3;-2) is reflected in the x-axis

  53. math

    A point moves along the x-axis, and its x-coordinate after t sec is x = 4t + 16. (Assume that x is in centimeters.) (a) What is the velocity? in cm/sec

  54. Math

    1. How can you represent a loss of 24 dollars as an integer? (1 point) –42 –24 1/24 +24 2. How can you represent a baby growing 13 inches in a year as an integer? (1 point) –13 0 +1/13 +13 3. What is the integer at Point L? (1 point) –5 –4 –3

  55. Calculus

    A point is moving along the curve xy=12. When the point is at (4,3), the x-coordinate decreases at the rate of 2cm/sec. How fast is the y-coordinate changing at that point?

  56. Math

    Let A(2,3) be a fixed point. A point P moves such that PA is equal to the distance of P from the y-axis. Find the equation of the locus of P PA2 = (x-x1)^2 + (y-y1)^2 +??? = (x-2)^2 + (y-3)^2 +??? I tried solving it using the distance formula but I'm still

  57. Calculus Reposted

    A point is moving along the curve xy=12. When the point is at (4,3), the x-coordinate decreases at the rate of 2cm/sec. How fast is the y-coordinate changing at that point? dy/dx=-y/x is my change rate so far, should i substitute the coordinates (x,y) to

  58. Math

    In a coordinate plane, Brittany labeled the coordinates for point m as (-31/2,2). Sade tells Brittany to reflect point m over the x axis to point r. What are the coordinate of point r?

  59. Matt

    plot the point with coordinates (-4, 3). Help I'm not really sure what you are asking, but I hope some of this helps: The horizontal line is the x axis. You have to plot -4 on that axis, because -4 is the x coordinate. The vertical line is the y axis. Plot

  60. math

    The graph of the equation y = −2x + 3 is shown. Which statement is true about every point on the graph? A. The x-coordinate and the y-coordinate have different signs. B. The y-coordinate is less than the x-coordinate. C. The y-coordinate is double the

  61. calculus (related rates)

    A particle moves in the plane along the curve y=xln(x). At what rate is the distance from the origin increasing at the moment its x-coordinate is 2 cm and its x-coordinate is increasing at a rate of 17 cm/sec?

  62. Algebra--please help!

    I'm having some trouble with my algebra homework. Please walk me through the question completely and give me the answer so I can fully understand it if I would ever need to solve a similar problem. Here's the problem: #1: Jon begins jogging at a steady 3

  63. calculus

    a particle moves along the x-axis (units in cm) its initial position at t=0 sec is x(0)=15. the figure shows the graph of the particle's velocity v(t). the numbers are areas of the enclosed regions. in the graph 0 to a is 4 under the x-axis, a to b is 5

  64. Physics

    A point charge Q1=−2 μC is located at x=0, and a point charge Q2=+8 μC is placed at x=−0.5 m on the x-axis of a cartesian coordinate system.The goal of this problem is to determine the electric field, E⃗ (x)=E(x)xˆ, at various points along the

  65. physics

    A 1100- kg car collides with a 1500- kg car that was initially at rest at the origin of an x-y coordinate system. After the collision, the lighter car moves at 20.0 km/h in a direction of 35 o with respect to the positive x axis. The heavier car moves at

  66. Physics

    A 1100- kg car collides with a 1500- kg car that was initially at rest at the origin of an x-y coordinate system. After the collision, the lighter car moves at 20.0 km/h in a direction of 35 o with respect to the positive x axis. The heavier car moves at

  67. physics help

    The magnitude of the velocity of a particle which starts from rest 2 ft below the origin when t = 0 and moves along a vertical axis is directly proportional to the time after starting. The displacement of the particle during the time interval from t = 1

  68. mathematics

    The coordinates of point A on a coordinate grid are (−2, −3). Point A is reflected across the y-axis to obtain point B and across the x-axis to obtain point C. What are the coordinates of points B and C? B(2, 3) and, C(−2, −3) B(−2, −3) and

  69. Physics

    A 1100- kg car collides with a 1400- kg car that was initially at rest at the origin of an x-y coordinate system. After the collision, the lighter car moves at 20.0 km/h in a direction of 25 o with respect to the positive x axis. The heavier car moves at

  70. ibnozohr

    A point charge Q1=−2 μC is located at x=0, and a point charge Q2=+8 μC is placed at x=−0.5 m on the x-axis of a cartesian coordinate system.The goal of this problem is to determine the electric field, E⃗ (x)=E(x)xˆ, at various points along the

  71. math

    a point has coordinates(0,0) where is located in the coordinate plane? A)x-axis B)orgin C)y-axis D)quadrant1

  72. math

    a point has coordinates(-3,-3) where is it located in the coordinate plane? A)x-axis B)y-axis c)quadrant2 d)quadrant3

  73. physics

    A 22.0-kg body is moving in the direction of the positive x axis with a speed of 359 m/s when, owing to an internal explosion, it breaks into three pieces. One part, whose mass is 6.5 kg, moves away from the point of explosion with a speed of 387 m/s along

  74. Algebra

    A line intersects the graph of y= x^2 twice. One point has an x- coordinate of -4, and the other point has an x-coordinate of 2. A) Draw a sketch of both graphs, and find the equation of the line. B) Find the measure of the angle that the line makes with

  75. Physics

    Please answer i am confused what to plot in y axis and in x axis. I am getting the gradient for this question in negative value.I have done the question many times. Time is taken for 10 oscillations. d/cm T1/SEC T2/SEC T3/SEC T D/T 1 25.0 14.68 14.57 14.81

  76. Physics

    Imagine a very large nonconducting plate that has a uniform surface charge density σ =1 μC/m2; it also shows a point charge Q = -3 μC at distance d = 0.3 m from the plate. Both are fixed in place. We choose the origin of an x-axis at Q. At what positive

  77. Math--Fast Pleasee!

    Find the coordinate of the image of the point (3,6) rotated with respect to the x-axis and the y-axis. I plotted the points and came up with (3,-6) and (-3,6) The choices for the answer is a)(6,-3) b) (-6,3) c) (-3,-6) d) (0,-6) Was I wrong or what did i

  78. Math

    A particle moves along the curve x^2+4=y. The point on the curve at which the y coordinate changes twice as fast as the x coordinate,is

  79. physics

    a car starts from rest &moves along x axis with a constant acceleration of 5 m/s2 for 8 sec.if it then continues to move with a constant velocity,what dist will the car cover in 12 sec since it stared.

  80. Engineering

    The angular velocity of a rigid body rotating about an axis of rotation is w = 5^i + 2^j - 4^k rad. per. sec. Determine the linear velocity of point B on the body with a position vector r = 3^i - ^j + 3^k ft. directed from a point on the axis of rotation.

  81. physics

    You are to make four straight-line moves over a flat desert floor, starting at the origin of an xy coordinate system and ending at the xy coordinates (-148 m, 66 m). The x component and y component of your moves are the following, respectively, in meters:

  82. Physics. Please please help!

    A charge Q = +4.5 uC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 uC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the

  83. Calculus

    Consider line segments which are tangent to a point on the right half (x>0) of the curve y = x^2+7 and connect the tangent point to the x-axis. If the tangent point is close to the y-axis, the line segment is long. If the tangent point is far from the

  84. elect and magn

    a postive charge of q is located at x=0 and y=-a, and a negative charge -q is located at the point x=0 and y=+a. A.) derive an expression for the potential V at points on the y-axis as a function of the coordinate y. take V to be zero at an infinite

  85. Phys1402

    Object A of charge 5e-6 C is located at the origin of a coordinate plane. Object B of charge 3e-6 C is located on the x-axis of a coordinate plane at x = 0.002 m. Object C of charge 3e-6 C is located on the y-axis of a coordinate plane at y = 0.001 m.

  86. Physics

    A point charge Q1=-2µC is located at x=0, and a point charge Q2=-8µC is placed at on the x -axis of a cartesian coordinate system.The goal of this problem is to determine the electric field,E(x)=E(x)x^ , at various points along the -axis. (a)What is E(x)

  87. COORDINATE GEOMETRY

    A RAY OF LIGHT ORIGINATES FROM A(1,2) AFTER REFLECTION ON X-AXIS AT POINT A REFLECTED AT POINT Q(5,3). FIND COORDINATE OF A

  88. Physics

    A charged body 5microcoulomb is placed along the X-axis at the origin of a coordinate system and a charge -3microcoulomb is placed at (2, 0). Calculate the resultant force in magnitude and direction on charge 6microcoulomb placed at (-2, 0) on the

  89. calculus

    Me again. One last question! Again, just needed my answer verified with any explanation or walk-through. The position of a particle moving along a coordinate line is s=√(3+6t) with s in meters and t in seconds. find the particle's acceleration at t=1

  90. math

    a particle moves along the curve y= sqrt 1+x cubed. As it reaches the point (2,3) the y-corrdinate is increasing at a rate of 4cm/s. How fast is the x-coordinate of the point changing at that instant?

  91. Geometry

    Write the translation that maps P(-4, 2) onto the point P ' (-1, -1)? What are the coordinates of the reflection of the point (5,1) over the line y = x? The coordinate notation for reflection over the y-axis is -?-. If a translation has a coordinate

  92. calculus

    I need help setting up this problem: A particle moves along the curve y=sqr(1+x^3). As it reaches the point (2,3) the y-cordinate is increasing at a rate of 4cm/s. How fast is the x-coordinate of the point changing at that instant. I could only come up

  93. calculus

    Can someone tell me how to do this type of problem? A particle moves along the curve y=sqrt(1+x^3). As it reaches the point (2,3) the y coorindate is increasing at a rate os 4cm/s. How fast is the x coordinate of the point changing at that instant?

  94. CALC

    point on the hyperbola 9x^2−6y^2=10 closest to the point (0, 7). y coordinate of each point= ? positive x coordinate= ? negative x coordinate= ?

  95. Theory of machine

    Fill in the blanks: 1. A disc is spinning with an angular velocity w rad/sec about the axis of pin. The coupled to the causing precession will be ....... 2. The swaying couple is due to the ...... unbalanced force. 3.All pairs are ....... pair in a

  96. co-ordinate geometry

    S is the point (4,0) and M is the foot of the perpendicular drawn From a point to the y-axis.If P moves such that the distance PS and PM remain equal,find the locus of point P

  97. math

    Which point is located on the y-axis of a coordinate plane? 6,0 3,2 6,6 0,6

  98. Physics

    17. A 5.6 kg toy race car moves along an x axis. The diagram below shows the force acting on the car. (The vertical axis is marked in increments of 2 N.) a) What is the momentum of the car at t = 9.0 s b) What is the car's velocity at t = 9.0 s? The graph

  99. Physics

    Electric Field of Two Charges : 15.0 points A point charge is located at x=0, and a point charge is placed at on the -axis of a cartesian coordinate system.The goal of this problem is to determine the electric field, , at various points along the -axis.

  100. Algebra--please help!

    Here are some more questions I'm having trouble with. Please walk me through them so I can fully understand them. #2: Let A be (5,9), B be (-3,-5), and C be (1,1). The median of a triangle connects a vertex of a triangle to the midpoint of the opposite

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