Will give brainlest to whoever answers all of em correct A 10 kg object needs to be lifted by 1 kg object using a simple machine.

2. with a 1 meter resistance arm, what length of force arm will be required?

3. how many suspending ropes a pulley system are required? 4. what axle radius is required with a wheel radius of 100 cm?

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

square pyramid

step-by-step explanation:

square prism looks like nothing like that

triangular prism has a rectangular base instead of a square base

tetrahedron has a triangular base

no he doesnt because "-16' is negatiive

step-by-step explanation:

answer: x=60