Athin plate 6 ft long and 3 ft wide is submerged and held stationary in a stream of water (t = 60°f) that has a velocity of 17 ft/s. what is the thickness of the boundary layer on the plate for rex = 500,000 (assume that the boundary layer is still laminar), and at what distance downstream of the leading edge does this reynolds number occur? what is the shear stress on the plate at this point?

69. air frictionthe velocity of the satellitea. decreases b. increases c. sometimes increases sometimedecreases d. no effect at all70. the unit of gravitational potential energy isa.jouté b.watt c. newtond.pascal71. which of the following is not influenced by a magneta. cobalt b.copper c.irond. nickel72. one joule of work done in one second by unit positive chargea.1 watt b.1 volt c.1 js d. none73. the most deviated colour of light after passing through a prisea. violet b.red c. green d.yellow4. a coin is placed below a beaker fill with water upto 12 cm isdisplaced by water isa. 9cm b.6cmс.3cmd.7cm