Please help me out with gravitational study i only have 4 questions and awnser if true or false

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

Estimate the change in the gibbs energy and molar gibbs energy of 1.0dm3 of octane when the pressure acting on it is increased from 1.0 atm to 100 atm. the mass density of octane is 0.703 g cm−3