The Article "Space Next" says all of the following except... a. why NASA and SpaceX intend to work with one another to establish a moon base

b. how much money it can cost someone to purchase a ticket for a flight in a "space plane"

c. how many humans will be aboard the mission to Mars that SpaceX has slated for the 2030s

d. when SpaceX is aiming to send an uncrewed mission to Mars to drop off supplies and gear

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.

Determine the damped natural frequencies and the steady state response of a decoupled damped forced two degrees of freedom system. 10ä1 + 2q1 20q1 10 cos t; 10q2 +4q2 + 40q2 10 cos t

Aplate of dimensions 3 m x 3 m is placed 0.37 mm apart from a fixed plate. the plate requires a force of 2n to move at speed of 45 cm/s. evaluate the viscosity of the fluid in between the plates