Aforce of 99 n causes a box to accelerate at a rate of 11 m/s2. what is the mass of the box? (ignore frictional effects.)

1,100 kg
1,100 n
9.0 kg
9.0 n

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

What are the two largest greenhouse gases

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate