Most popular questions and responses by rhine
  1. physics

    A ball rolls forwards and backwards on a curved track as shown in Fig. 1.1. ball flexible track Fig. 1.1 It is suggested that the period T of the oscillations is related to the radius r of the ball and the radius of curvature C of the track by the

    asked on September 14, 2017
  2. science/ velocity

    a body moves along a straight line,its distance from the origin at any instant being given by the equation x= 8t -3t squared, where x is in centimeter and t is in seconds. find the average velocity of the body in the interval from t=0 to t=1 sec,and in the

    asked on February 17, 2015
  3. trigo

    find the period, amplitude,zeros, extreme points at maximum and minimum of the given function: 1.y = sin( -2x) 2.y = 4 sin( 5x) 3.y = -3 sin (3x/5) 4.y = 1/2 cos (-4x)

    asked on February 8, 2015
  4. physics

    with what velocity must a ball be thrown in order to achieve the height of 50 ft.? and how long will it stay in the air?

    asked on February 17, 2015
  5. science

    the change in velocity takes place in 10 sec interval. What is the magnitude, the algebraic sign and the direction of the average acceleration in each interval? At the beginning of the interval a body is moving to the right along the x-axis at 5 ft/sec,

    asked on February 17, 2015