An existing levee has a top width of 10 feet, a top ele- vation of 10 feet above the base, and 3: 1 (horizontal: vertical) slopes on both sides. if the levee is to be raised to an ele- vation of 15 feet and must meet new standards requiring a 12-foot top width, how much additional land space (in ft2) will be needed for the base of the levee per mile of levee length? assume side slopes remain 3: 1. show all work, and support your answer with appropriate drawings and schematics

Astate of matter all that has define volume and can flow is a(n)

Idon’t quite understand this problem

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 ⇒