Jenny wants to determine if a new brand name washing detergent is better than her old detergent. she washes ten dirty t-shirts with the new washing detergent and ten dirty t-shirts with the old detergent. identify the dependent and independent variables for this experiment. don't forget both the iv and dv in your answer!

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories