Desde la terraza de un edificio de 30m se lanza una moneda, verticalmente hacia arriba, con una velocidad de 4 m/s. Calcula la altura máxima que alcanza la moneda y la velocidad al llegar al suelo.

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

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.

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents