The students at Alberta Colony School use a pencil sharpener that is attached to the counter. To use the sharpener they turn the crank with a force of 7.5 N. This causes the blades to turn very quickly and with a force of 0.5 N. what is the effort force?

what is the load force?

calculate the mechanical advantage!

connect the batteries in series and hope

it has to be b, about 97 percent.

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.