How is the force of gravity mathematically related to the factors that answer question 1?
1.what three variable factors determine the force of gravity between any two objects

Density of salty water as compared to the density of pure water is(a) is less(b) is always equal(c) is always more(d) may be less or more

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.