The work output of a machine is measured or calculated by measuring the output force and the output distance. Work output is the work done by a simple machine or any type of an engine model, it is the energy output, which for machines is always less than the energy input, due to factors such as friction of the moving parts.
I would say d because the student isn’t moving, the Ferris wheel is.
A) elements in the same group usually have similar chemical properties
B) This is because their atoms have the same number of electrons in the highest occupied energy shells
C) Lithium, sodium, potassium in group 1 elements are reactive metals called the alkali metals
<span>One leads to allopatric speciation, whereas the other lead to sympatric speciation.</span>
Answer:
The problem occurs with all spherical mirrors.
Spherical mirrors are practical up to about inches in diameter.
Reflecting telescopes use spherical mirrors for apertures up to about 4 ".
Larger aperture telescopes use parabolic mirrors to obtain sharp focus.
