Atechnician is working on an mri machine. to test it, the technician turns on the mri machine that produces a strong magnetic field, but then he accidentally drops a screwdriver in this magnetic field. as the screwdriver falls, an emf is induced across the length of the metal shaft, l, of the screwdriver. at one instant, the screwdriver falls with a speed of 2.1 m/s and is oriented as shown in figure so that the induced emf is maximized. the magnitude of the magnetic field at this instant is 2.5 t, and the length of the metal shaft, l, is 10 cm. what is the induced emf across the length of the metal shank at this instant?

Amachinist needs to remove a tight fitting pin of material a from a hole in a block made of material b. the machinist heats both the pin and the block to the same high temperature and removes the pin easily. what statement relates the coefficient of thermal expansion of material a to that of material b? a) the situation is not possible, heating block b will shrink the hole in the material as the material expands with increasing temperatureb) material b has the same coefficient of expansion as does material ac) material b has a negative coefficient of expansion and a has a positive coefficient of expansiond) material a has a greater coefficient of expansion than does material be) material b has a greate

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.

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine