An object with mass 0.150kg is acted on by an elastic restoring force with force constant 10.7n/m . the object is set into oscillation with an initial potential energy of 0.150j and an initial kinetic energy of 6.70? 10? 2j . what is the amplitude of oscillation? what is the potential energy when the displacement is one-half the amplitude? at what displacement are the kinetic and potential energies equal? what is the value of the phase angle \phi if the initial velocity is positive and the initial displacement is negative?

Which subatomic particle has a negative charge

Afaulty model rocket moves in the xy-plane (the positive y direction is vertically upward). the rocket's acceleration has components ax(t) = ? t2 and ay(t) = ? ? ? t, where ? = 2.50 m/s4 , ? = 9.00 m/s2 , and ? = 1.40 m/s3 . at t = 0 the rocket is at the origin and has velocity ~v0 = v0x ? i + v0y ? j with v0x = 1.00 m/s and v0y = 7.00 m/s. (a) calculate the velocity and position vectors as functions of time. (b) what is the maximum height reached by the rocket? (c) sketch the path of the rocket. (d) what is the horizontal displacement of the rocket when it returns to y = 0?

Does science support the idea that humans have influenced global warming? provide specific examples that show how two knowledgeable individuals with differing opinions might argue.