The figure shows the relationship between the force applied…

The figure shows the relationship between the force applied to a spring and its displacement. x2 = m. In one experiment, a kg mass is attached to the spring and displaced 0.8 m to the right from its equilibrium position before being released. The system then undergoes simple harmonic motion on a horizontal, frictionless surface. Determine the angular frequency of the motion (in rad/s).

An incompressible fluid with a density of [rho] kg/m³ flows…

An incompressible fluid with a density of kg/m³ flows through a pipe with uniform radius. Three points along the pipe, A, B and C, are shown in the figure. The fluid speed is 4 m/s at point A and 2 m/s at point B. Given that h1 = m, and h2 = m, determine the pressure difference pB – pA, between Point B and Point A. Assume the flow is steady and ideal (no viscosity).