Answer:
Herpetology is the branch of zoology concerned with reptiles and amphibians.
Answer:1.04 N
Explanation:
Given
Gravitational Force on the Platter is 
Tray makes an angle of 
This gravitational Force has components along and Perpendicular to Platter
Perpendicular Force 

Along the Tray


Thus 1.04 N is the magnitude of force that will cause Platter to slide down
Answer:
11.5 meters
Explanation:
73.3°, 12.0m
The y-component is the magnitude of the vector times the sine of the angle measured from the +x axis.
y = 12.0 sin (73.3°)
y = 11.5
The y-component is 11.5 meters.