Astarís light is shifted to the red part of the light spectrum.

what does this mean about the length of light waves and movement of the star?

a.
the wavelengths are getting shorter, meaning the star is moving toward the observer.

b.
the wavelengths are getting longer, meaning the star is moving toward the observer.

c.
the wavelengths are getting shorter, meaning the star is moving away from the observer.

d.
the wavelengths are getting longer, meaning the star is moving away from the observer.

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.

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?