waves
what are 2 types of waves
compression + longitudinal
what is reflection
define magnetism
magnetism is the force exerted by magnets that attract or repel each other
can 2 positive sign magnets ever touch?
no, it would repel
stationary charges or fields that has electric currents.
what is the relationship between frequency and wavelength of a wave?
wavelength is inversely proportional to the frequency
what is refraction
refraction is the bending light that passes through one medium to another
what type of field induces an electric charge movement which results in producing an electric charge?
a(n) magnetic field
if 2 charges have and electric force between them and one of the charges is doubled what will happen to the force?
the force will be double then before
what is friction?
the resistance to motion of an object moving relative to another
how does the amplitude of a wave effect its energy?
If you increase the amplitude of a wave, you can also increase its energy
what is diffraction
the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wabe forms produced.
how do magnets loose their magnetism?
what is the relationship between wavelength and amplitude
there is no real relationship between either one
how do objects lose their electrons
they rub against another object
how do waves transfer energy and momentum through a medium
transfers by the cause of particles of the medium to vibrate and oscillate
what is the relationship between diffraction and refraction?
in refraction, the change in direction is changed due to the speed and bending of wave and in diffraction, it is changed due to the bending of the wavefronts
why does a magnetic compass point to the geographic north pole?
the north pole of a magnet always points towards the direction of geographical north of the earth
what is a example of a non magnetic thing?
possible answers: paper, gold, rubber, leather, copper, etc.
2 pieces of transparent tape are pulled off a wooden tabletop. when they are closer together what do they do?
they repel because they were prepared the same way
what is the doppler effect?
doppler effect is the change in frequency or wavelength and it applies to all waves like sound or electromagnetic waves
a ray of light is incident on a plane mirror and the angle of incidence is 25 degrees. what is the angle of reflection.
25 degrees
the distance from the magnet increases results in the strength of the magnetic field decreases
what wave does not require a medium?
Electromagnetic
a repulsive force exists between what 2 particles?
2 protons