A figura abaixo mostra um foguete de São João no momento da detonação. O fabricante fornece os seguintes valores: a) Qual o valor da quantidade de movimento do explosivo antes da expulsão? E do cartucho?
b) Considerando o sistema constituído pelo explosivo e o cartucho, determine a quantidade de movimento total do sistema, antes da detonação.
c) Determine o valor da quantidade de movimento do explosivo logo após a detonação. d) Determine o valor da quantidade de movimento do cartucho logo após a detonação. e) Qual o valor da quantidade de movimento total do sistema logo após a detonação? f) O resultado encontrado no item e era esperado? Por quê?

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.

The momentum of a man riding his bicycle downhill can be calculated. the bicycle and the man have a combined mass of 40 kg. the velocity of the bicycle is 10 m/s. calculate the momentum.

1. study the scenario. the particles in some system are moving around quickly. a few minutes later, the particles are moving, on average, more slowly. how does this change in motion affect the temperature of the system? the temperature of the system did not change. the speed of the particles does not affect temperature, the number of particles affects the temperature.the temperature of the system is lower now than it was initially. faster moving particles result in a higher temperature for the system.the temperature of the system is higher now than it was initially. slower moving particles result in a higher temperature for the system.the temperature of the system did not change. the speed of the particles has no effect on the temperature, only the type of atom affects the temperature.