Action and reaction force always cancel each other. true or false.

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

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.

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?