Amass on a spring vibrates in simple harmonic motion at a frequency of 4.0 hz and an amplitude of 4.0 cm. if a timer is started when its displacement is a maximum (hence x = 4 cm when t = 0), what is the speed of the mass when t = 3 s?

w= 0.0133m/s

Explanation:

Parameter given

X2 = 4cm T2 = 3secs T1=0 X1=0

Angular speed (w) = Change in displacement / change in time

X2 = (4/100)m

= 0.04m

Angular speed (w) = {0.04 - 0}÷ {3 - 0}

= 0.04/3

= 0.0133m/s

absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.