27. a 70.-kilogram astronaut has a weight of 560
newtons on the surface of planet alpha. what is
the acceleration due to gravity on planet alpha?
a) 0.0 m/s2
b) 8.0 m/s2
c) 9.8 m/s2
d) 80. m/s2

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied.

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

Which levels of government establish and implement educational requirements for minors