Scientist suggest that galaxies are moving away from Earth due to
A. Dark energy
B. Doppler shift
C. Energy
D. Solar energy

Determine the maximum r-value of the polar equation r =3+3 cos 0

What determines the amount of inertia an object has

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.