text: Spin-aligned electrons tunnel into the "free layer" in a form of magnetoresistive RAM named for thisquantity.
full_question: Spin-aligned electrons tunnel into the "free layer" in a form of magnetoresistive RAM named for thisquantity. In a noninertial reference frame, this quantity equals a time derivative in the body frame, plusomega-cross-L in the noninertial frame. The product of current, magnetic field, and the area of the loop ofwire gives this quantity, if the field is oriented perpendicular to the loop. Precession is either (*) "induced"or "free" of this quantity. The sum of this quantity for the system equals moment of inertia times angularacceleration. For a pulley, this quantity equals the tension in the rope times the radius of the disk. For 10 points,name this quantity that equals force cross distance, and which causes rotational motion if it's nonzero.
first_sentence: Spin-aligned electrons tunnel into the "free layer" in a form of magnetoresistive RAM named for thisquantity.
raw_answer: torque [or tau; or T] 