The wind blows because
a. low pressure and high pressure
b. convection in together atmosphere.
c. uneven hearing by the sun
d. all of the above

The metric unit of electrical power is the watt volt ampere ohm

How are calculation for velocity and speed different

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.