A box is lowered using a rope. If the acceleration of the box, is 2.5 m/s2 (downward) and the tension in the rope is 31 N, what is the mass of the box (in kg) ?

Into how many main groups are fish divided? a. one b. two c. three d. four

Which molecule would you expect to be a free radical?

Matter is the ability to cause change. true or false.

A vector is a quantity that has what two items

Identify the following as combination, decomposition, replacement, or ion exchange reactions: Al (s) + 3 Cl2 (g) → 2 AlCl3 (s) Ca (OH) 2 (aq) + H2SO4 (aq) → CaSO4 (aq) + 2 H2O (l

What energy do electrons have when they are farther away from the nucleus?

200 525000 lololo Boat A is 10 km north of a port. Boat B is 5 km east of the same port. Boat A sails in a straight line towards boat B. Work out the bearing on which boat A sails.

Is Li greater than He on the periodic table?

White light falls on a yellow filter, if: (a) A green filter is placed behind a yellow filter, what is the colour of the light that will emerge from the green filter?

Calculate the energy equivalent in joules of the mass of a proton. [Show all work, including the equation and substitution with units.]