1. A vibration of an electric charge. 2. Transmits energy from the Sun to Earth
3. A wave which has both an electric and a magnetic component
4. The speed of this wave decreases as the medium becomes denser.
What type of wave is being described by the statements above?

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it