A10g ball is launched straight up in the air using a spring loaded projectile launcher similar to the one you used earlier this semester. the launcher is essentially a hollow tube with a spring inside. the sping length is the same as the tube length , 12cm. when the ball is loaded , the spring is compressed to 4 cm. the diameter of the ball and that of the tube are almost identical such that the ball is in contact with the walls as it moves up the tube. this introduces a 10% energy loss due to friction what is the velocity of the ball when it leaves the launcher? enter your answer in m/s.

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

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.

powerful computers now, not then