An 8-m-internal diameter spherical tank made of 1 5-cm-thick stainless steel (e -15w im k) is used to store iced water at o c the tank is located in a room whose temperature is 25 °c the walils of the room are also at 25 "c the outer surface of the tank is black (emissvity ? =1), and heat transfer between the outer surface of the tank and the surroundings is by convection and radiation the convection heat transfer coefficients at the inner and outer surfaces of the tank are 80 w/m2 k and 10 w/m2 k respectively determine, (a) the rate of heat transfer to the iced water in the tank and (b) the amount of ice at 0 °c that melts dunng a 24 hour perod the heat of fusion of water at atmospheric pressure is h, -333 7kjikg (22)

An alligator swims to the left with a constant velocity of 5 \,\dfrac{\text{m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction. when the alligator sees a bird straight ahead, the alligator speeds up with a constant acceleration of 3 \,\dfrac{\text {m}}{\text s^2}3 s 2 m ? 3, space, start fraction, m, divided by, s, start superscript, 2, end superscript, end fraction leftward until it reaches a final velocity of 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction leftward. how many seconds does it take the alligator to speed up from 5 \,\dfrac{\text {m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction to 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction?

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?

Which of the following is not an appropriate unit for acceleration? (kg/12 mihr? m/min/sec cm/30c?