Which of these describe a range of about 10% in the
electromagnetic spectrum?

i believe the answer would be:

d. violin, clarinet, french horn, and tuba

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

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

b. preoperational

just took it

false

hope this : d