Um astronauta flutua ao lado de sua espaçonave vestindo seu traje espacial, para realizar um pequeno conserto. Ele aciona o propulsor de seu traje para adquirir uma aceleração constante de 0,1 m/s2, ganhando velocidade para chegar ao acesso externo do motor da nave. O astronauta tem uma massa total de 200 kg com traje completo e o motor propulsor. O astronauta parte do repouso e acelera sob ação exclusiva da força propulsora F, não existindo peso ou atritos. Qual o valor de F?

1. consider the case in which air fills air shocks on a truck trailer. the pressure in the shocks is 2 mpa. the temperature is 300 k. the diameter of the shock piston is 10 cm and the initial length of the cylindrical cavity containing the compressed air is 40 cm. a. the truck is gradually loaded over a period of a day in a static setting. the temperature is held constant for the atmosphere and thus for the gas shock. calculate the compressibility of the air in the shock for this condition when the truck is initially being loaded. b. if the shocks were loaded in a dynamic setting by driving over bumps, what would be the compressibility? state your assumption. c. what is the initial load on the shock if the shock is in an atmospheric 100 kpa? d. if the shock is compressed using the process described in part a, and the air shock compressed air cavity length decreases to 20 cm, what is the additional load applied to the shock?

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon