How does a compass needle respond when a compass is placed within a magnetic field? it aligns in a direction parallel to the field. it points toward the edge of the field. it rotates in the center of the field. it aligns in a direction perpendicular to the field.

Which of the statements about waves is true? a. in longitudinal waves, particles move perpendicular to the direction the wave is traveling.b. both transverse and longitudinal waves can travel through water c. electromagnetic waves are a type of longitudinal waves.d. in a transverse wave, particles move parallel to the direction the wave is traveling.

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

True or false graphs must include scales that increase by the same amount