When most objects are heated, they:
a. shrink.
b. always have an increase in temperature.
c. expand.
d. always change phase

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Decreased sensitivity to an unchanging stimulus is known as

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.