Physics, 23.07.2019 17:30 aroman4511
Which two pieces of evidence most directly support the idea that during the first moments after the big bang, light elements formed from the original energy present? a. the abundance of helium in the universe and einstein's mass-energy equivalence b. einstein's mass-energy equivalence and the redshift of light from galaxies c. the abundance of helium in the universe and the uniform distribution of cosmic background radiation d. the redshift of light from galaxies and the uniform distribution of cosmic background radiation
Answers: 1
Physics, 21.06.2019 16:30
Which of the following is not a part of a wave? question 2 options: a: frequency b: refraction c: wavelength d: amplitude (whoever answers correctly first gets brainiest! ) ~kayla
Answers: 2
Physics, 21.06.2019 22:40
The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively
Answers: 2
Physics, 22.06.2019 19:00
Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.
Answers: 3
Which two pieces of evidence most directly support the idea that during the first moments after the...
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