1. Fill the blanks Displacement A time elapsed between 2 successive crests passing by the same point in space (1/f) Wavelength B low point of a wave AWN number of complete cycles of crests that pass a Amplitude C given point per unit in time, its units are Hertz [Hz] Frequency D high point of a wave Period E the distance x of the mass from the equilibrium point at any moment 90 9 Crest F distance between two successive crests of wave or any other identical point Valley or Trough G max height of the crest or depth of the trough in relation to the equilibrium level Longitudinal Wave H Every single type of wave propagates . Deals with a two or three-dimensional wave where 10. Transverse Wave all points along the wave form the wave crest. 11. Energy wave fronts far from the source that have lost most or all curvature and are nearly straight. 12. Wave front K cause the medium to move perpendicular to the direction of the wave. 13. Plane Waves cause the medium to move parallel to the direction of the wave. 14. In destructive interference, the individual amplitudes of 1 or more waves add each other resulting in a bigger amplitude. a) True b) False 15. What is rotational motion? a) the orientation of a body or figure with respect to a specified reference position b) the rotation of a particle about a fixed point in space c) a circumference 16. The pressure on an elastic body is described by (a) a modulus,(b) work, (c) stress, (d) strain. 17. A relative measure of deformation is (a) a modulus, (b) work, (c) stress, (d) strain. 18. A wood block floats in a swimming pool. The buoyant force exerted on the block by water depends on (a) the volume of water in the pool, (b) the volume of the wood block, (c) the volume of the wood block under water, (d) all of the preceding. 19. If the speed at some point in a fluid changes with time, the fluid flow is not (a) steady, (b) irrotational, (c) incompressible, (d) nonviscous. 20. An ideal fluid is not (a) steady, (b) compressible, (c) irrotational, or (d) nonviscous.II. Solve the next problems. Show all your work, circle and highlight your answers. 1. A metal wire 20 mm in diameter and 3 m long hangs vertically with a 5 kg object suspended from it. If the wire stretches 2 mm under the tension, what is the value of Young's modulus for the metal? 2. If you dive to 3 m below the surface of a swimming pool fill with milk, (a) what is the pressure due to the milk alone? (b) What is the total or absolute pressure at that depth? (p milk = 1033 [kg/m3] . A hydraulic lift in a garage has two pistons: a small one of cross-sectional area 4 m" and a large one of cross-sectional area 25 m (a) If this lift is designed to raise a 3500 kg car, what minimum force must be applied to the small piston? (b) what must be the minimum pressure applied to the small piston? 4. Convert 12,800 rpm into rad sec 5. If a particle is rotating with an angular speed of fad/5. how long does the particle take to go through one revolution? 6. A FI car with a speed of 20 km/h goes around a level, circular track with a radius of 1 km. What is the centripetal acceleration of the car? 7. Calculate the Gravitational Force between the Sun and Jupiter (make sure that the masses of the Sun and Jupiter are in Kg and the distance in meters)