If a particle is confined to move on a spherical surface of radius a, 7 to denote its position vector, then show that the projection ormal ê, is always (a) (5 poi and we use of the acceleration d2r/dt2 along the instantaneous surface - (dr/dt)/a. ) suppose the particle is executing a uniform circular motion along a latitude on the surface of our (spherical) earth of radius a. its speed is u. what itude and direction of its instantaneous centripetal acceleration? (c) (2 points) show that parts (a) and (b) are self-consistent.

d eras and periods

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.