un resort are lungimea initiala de 8 cm, iar nedeformat are lungimea de 3cm. stiind forta elastica de 400n, se cere: a) Constanta elastica a resortului b) Tipul Deformarii c) Reprezentarea fortei deformatoare si a fortei elastice folosind ca etalon

Atank holds 1000 gallons of water, which drains from the bottom of the tank in half an hour. the values in the table show the volume v of water remaining in the tank (in gallons) after t minutes.t(min) 5 10 15 20 25 30v(gal) 694 444 250 111 28 0(a) if p is the point (15, 250) on the graph of v, find the slopes of the secant lines pq when q is the point on the graph with t = 5, 10, 20, 25, and 30.(b) estimate the slope of the tangent line at p by averaging the slopes of two secant lines.(c) use a graph of the function to estimate the slope of the tangent line at p. (this slope represents the rate at which the water is flowing from the tank after 15 minutes.)show all steps.

What are the north and south poles of a solenoid change with?

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?