2. Una caja tiene una masa de 400kg. ¿Qué fuerza horizontal se debe ejercer para que se mueva con una aceleración de 5 m/s2? (sin fricción)

Aballet student who learns with the of his instructor is demonstrating learning.

You will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. (refer to the walk-through video to locate the online lab within the online textbook).

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?