Carlotta makes a graphic organizer about the steps of the sun’s hydrogen fusion process. a venn diagram of 3 intersecting circles with one circle labeled step 1, a second circle labeled step 2 and the third labeled step 3. there is a v in the step 1 circle. there is a z in the step 3 circle. there is a w in the intersecting circle between step 1 and step 2. there is a y in the intersecting section between step 2 and step 3. there is an x in the intersecting area of all 3 circles. she wants to add three labels. label 1: is a reactant. label 2: energy is released. label 3: helium is produced. what is the best placement of the labels? label 1 in region v. label 2 in region x. label 3 in region z. label 1 in region w. label 2 in region y. label 3 in region z. label 1 in region w. label 2 in region x. label 3 in region y. label 1 in region v. label 2 in region z. label 3 in region y.

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

The frequency of vibrations of a vibrating violin string is given by f = 1 2l t ρ where l is the length of the string, t is its tension, and ρ is its linear density.† (a) find the rate of change of the frequency with respect to the following. (i) the length (when t and ρ are constant) (ii) the tension (when l and ρ are constant) (iii) the linear density (when l and t are constant) (b) the pitch of a note (how high or low the note sounds) is determined by the frequency f. (the higher the frequency, the higher the pitch.) use the signs of the derivatives in part (a) to determine what happens to the pitch of a note for the following. (i) when the effective length of a string is decreased by placing a finger on the string so a shorter portion of the string vibrates df dl 0 and l is ⇒ f is ⇒ (ii) when the tension is increased by turning a tuning peg df dt 0 and t is ⇒ f is ⇒ (iii) when the linear density is increased by switching to another string df dρ 0 and ρ is ⇒ f is ⇒

Talia is manufacturing rolls of wire for hanging pictures. she needs a material that is so that it can easily be pulled into wire without breaking.