Observe the picture given in the figure. Water is being boiled in a pan of wide base. Answer the following. (a) Which position, A or B will feel much warmer? (b) What is the mode of flow of heat at C & D?

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)