Given that the acceleration due to gravity on Mercury is 2.7 times less than the acceleration due to gravity on Earth. Determine the mass of an astronaut on Mercury if the mass of the astronaut on Earth is 66 kg. a. 24 kg
b. 66 kg
c. 63 kg
d. 178 kg

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

If the new moon happens on january 15th, what shape will it be on february 6th?