19. What was done to overcome the problem of the MSL landing? O More airbags were used
O A pulley system was created
O A parachute was used
0 A tether and roper were used

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In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)