The range of accommodation of a normal human eye is
0m to 0.1m
0m to 0.25m
0.10m to 0.25m
0.10m to infinity
0.25m to infinity
Correct answer is E
No explanation has been provided for this answer.
A hot metal ball is suspended in the open air. As it cools it loses heat by?
conduction only
convection only
radiation only
conduction and convection
convection and evaporation
Correct answer is B
Convection occurs when heat is carried away from your body via moving air. If the surrounding air is cooler, the air will absorb heat and rise.
As the warmed air rises, cooler air moves in to take its place and absorb more warmth.
The area under a force-distance graph represents
acceleration
velocity
power
work
momentum
Correct answer is D
No explanation has been provided for this answer.
The equation PxVyTz = constant
x = 0, y = 0, z = 1
x = 1, y = 0, z = 0
x = 1, y = 1, z = 0
x = 1, y = 1, z = 1
x = 1, y = 1, z = -1
Correct answer is E
No explanation has been provided for this answer.
0o and 0o
60o and 60o
90o and 90o
90o and 0o
0o and 90o
Correct answer is D
No explanation has been provided for this answer.