Se tiene un bloque en reposo, sobre un plano horizontal. La masa del bloque es de 6Kg. Para deslizarlo hacia la derecha se aplica una fuerza de 7, con la cual adquiere una aceleración de . ¿Cuál es el valor del coeficiente de roce entre el bloque y el plano? Como se resuelve?

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

When measuring volume, why is it important to use the correct tools and units to attain the greatest accuracy? use specific examples from the lab to support your answer. (5 points)