A particle is subjected to the action of two forces: F1 = - 4 i + 7 j + 7 k [kN] and F2 = 9 i - 6 j - 5 k [kN]. The coordinate direction angle of the resultant force with the Z-axis is:

Select one:
a. γR= 68.58°
b. γR= 42.09°
c. γR= 111.42°
d. γR= 24.09°

Which sound characteristic is not affected by the relative motion of an object

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?

Aspacecraft that renters the earth’s atmosphere drastically slows down. the amount of kinetic energy the spacecraft has as it reenters the earths atmosphere