Determinati valoarea de adevar a urmatoarelor afirmatii marcab A sau F A) lucrul gazului efectuat la variatia volumului sau este o marime de stare.
B) in transformarea izoterma cantitatea de caldura transmisa sistemului este egala cu variatia energiei sale interne.
C) randamentul motoarelor termica este o marime ce caracterizeaza eficacitatea acestora.

Urgent va rog!!!

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped

The base of a 50-meter tower is at the origin; the base of a 50-meter tree is at (0, 50, 0). the ground is flat and the z-axis points upward. the following parametric equations describe the motion of six projectiles each launched at time t = 0 in seconds. (i) r (t) = (50 + t2)k (ii) r (t) = 2t2 j + 2t2k (iii) r (t) = 50 i + 50 j + (50 − t2)k (iv) r (t) = 2t j + (50 − t2)k (v) r (t) = (50 − 2t) i + 2t j + (50 − t)k (vi) r (t) = t i + t j + tk (a) which projectile is launched from the top of the tower and goes downward? at time t = , the projectile hits the ground at point (x, y, z) = . (b) which projectile hits the top of the tree?