Ron wants to install an energy efficient and long lasting device for lighting in his new home. Which device should he use? A.
light emitting diodes
B.
fluorescent bulbs
C.
tube lights
D.
compact fluorescent bulbs

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.