Answer:
agricultural production of food
Explanation:
Answer:
Yes
Explanation:
Because if you push it, the skateboard has kinetic/potential energy.
Work is done. work=forcexdisplacement. the ice skater glides 2 meters (displacement), so yes.
Humans rely on photosynthesis to generate food as well as provide energy for heating, lighting, and electricity.
Answer:
= 1220 nm
= 1.22 μm
Explanation:
given data:
wavelength 
distance of screen from slits D = 3 m
1st order bright fringe is 4.84 mm
condition for 1 st bright is
---( 1)
and

= 0.0924 degrees
plug theta value in equation 1 we get


condition for 1 st dark fringe


= 2λ since from eq (1)
= 1220 nm
= 1.22 μm