La distancia entre dos ciudades es de 350km. Si un autocar emplea 4h en el viaje, determina su velocidad media y exprésala. En el sistema internacional. En km/h

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.