Question 2 2. what cause the rusting iron nails or iron made materials in a wet Cloth?
A. presence of heat
B. absence of heat
C. presence of oxygen
D. absence of oxygen

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?

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.

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles