The mass of a measuring cylinder is 190 g. 400 cm3
of liquid is put into the measuring cylinder.
The total mass of the measuring cylinder and the liquid is 560g.
Four solid objects are lowered in turn into the liquid. The densities of the objects are shown.
1 0.40 g / cm3
2 0.90 g / cm3
3 1.2 g / cm3
4 2.7 g / cm3
Which objects will float in the liquid?

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Which fact supports the conclusion that there will be fewer farm managers in the future? a) a farmer manager’s duties vary by the type of farm. b) farm technology is replacing some administrative jobs c) farm managers often need experience but not education. d) administrative duties include budgeting and training staff.

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.