For a substance, at 100oC the average speed and average kinetic energy of the particles is greater than at 0oC.Question 19Answera.Trueb.False

has particles with the greatest average kinetic energy.       A. Ice water       B. Hot water       C. Warm water       D. Room-temperature water

1)the magnitude of the velocity of a particle is equal to speed 2)the magnitude of average velocity of a particle in an interval is equal to its average speed in that interval 3)it is possible to have a situation in which the speed of a particle is never zero but average speed in an interval is zero 4)it is possible to have a situation in which the speed of a particle is zero but the average speed is not zero a) 1 and 4 are true b) only 1 is zero c) 2 and 3 are true d) 1 and 3 are true

All the molecules of a substance possess the "average kinetic energy" value.

Under which of the following conditions is the magnitude of the average velocity of a particle moving in one dimension smaller than the average speed over some time interval? 1 pointThere are no conditions for which this is trueA particle moves in the +𝘹 direction and then reverses its directionA particle moves in the +𝘹 direction without reversingA particle moves in the −x direction without reversing

Which of the following statements are incorrect ?(i)i Average velocity is path length divided by time interval.(ii)ii In general, speed is greater than the magnitude of the velocity.(iii)(iii) A particle moving in given direction with a non-zero velocity can have zero speed.(iv)(iv) The magnitude of average velocity is the average speed.A(ii)(ii) and (iii)iiiB(ii)ii and (iv)ivC(i), (iii)i, iii and (iv)ivDAll four