If a star contains a certain element, it can be determined by studying the star’s
a. emission spectrum
b. corona
c. sunspot activity
d. main sequence

Porque crees que el agua no podia subir mas de 10 m de altura con ese tipo de bomba

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).

In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.