Need help on this gizmo.. will give brainliest

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

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.