Paco uses a fan on a hot summer afternoon. what changes if he turns the fan to a higher speed.
a. the air gets hotter
b. the air gets cooler
c. the air moves at a faster speed
d. the air moves at a slower speed

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

Aregular polygon has angkes of size 150° each.how many side has the polygon

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?