7. Given a displacement vector that is 10 m in magnitude and forms an angle of 30° to the horizontal, determine the displacement in the x-direction and in the y-direction.

In a system, when potential energy decreases, then entropy also decreases. true false

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount