A woman standing on the ground watches an airplane fly by a mountain on a clear summer day. Her reference point for the moving plane would be: a. There is no reference point
b. The ground
c. The mountain
d. A person in the plane

Which type of current is produced by a wire breaking magnetic field lines and changing the polarity? a. alternating b. direct c. straight d. alternating and direct

Like a key in a lock, the shape of the. must bind with the. of the recieving neuron

A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm