Q. Which of the following about microscope is correct? (a) microscope is a scientific instrument used to magnify the image of objects mostly
microorganisms
(b) light microscopes are fitted with mirrors to reflect light into the aperture of the sub
stage condenser
(c) the simple light microscope has no ocular but an objective holder
(d) the compound microscope has one or two oculars
(e) binoculars are compound microscopes with two oculars

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.

Why is no-till farming more sustainable than many traditional methods of farming