Dale and Alex push on opposite sides of a couch. Dale pushes to the left with a force of 100 N, while Alex pushes to the right with a force of 175 N. If the couch has a mass of 55 kg, what is the acceleration of the couch?

What is an aquifer for science class

The strong nuclear force acts over a small distance than the electrostatic force. true or false

Which of the following statements are evidence that gases do not always behave ideally? check all that apply.? a. co2 gas becomes dry ice (solid co2) at 1 atm and –78.5 °c. b. when two gases are mixed, they follow dalton\'s law of partial pressures. c. at 4 k and 1 atm, helium is a liquid. d. it is impossible to compress a gas enough so that it takes up no volume.