Iii) The limit of proportionality of the spring is reached at an extension of 50mm. Continue the graph in Fig. 1.1 to suggest how the spring behaves when the stretching force is increased to values above 125 N.

iv）Another spring has a smaller value of k. This spring obeys Hooke’s law for extensions up to 80mm.
On the grid of Fig. 1.1, draw a possible line of the variation of F with x for this spring.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).