An astronaut on a spacewalk pushes off of the outside of the spaceship. Compare the force of the astronaut on the ship to the force of the ship on the astronaut. Compare the astronaut's change in momentum to the spaceship's change in momentum. Compare the astronaut's change in velocity to the spaceship's change in velocity​

Asher cycles 12 miles in 16 hours. what is his speed?

When does your body conduct current more readily?

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.