Answer:
1500J
Explanation:
Work done = Force * Distance
Work = ?
Force = 50N
Distance = 30m
Work = 50 * 30
Work = 1500J
Answer:
C
Explanation:
Animals do not have cell wall thus membrane controls movement in and out while in plants it helps store genetic material inside
Answer:
The relative size of an object serves as an important monocular cue for depth perception. It works like this: If two objects are roughly the same size, the object that looks the largest will be judged as being the closest to the observer. This applies to three-dimensional scenes as well as two-dimensional images.
Explanation:
Answer:
Explanation:
According to the Stefan-Boltzmann law for real radiating bodies:
(1)
Where:
is the energy radiated (in Watts)
is the Stefan-Boltzmann's constant.
is the Surface area of the body
is the effective temperature of the body (its surface absolute temperature) in Kelvin
is the body's emissivity
On the other hand, we are told the human body is roughly approximated to a cylinder of length 
and circumference 
.
The circumference of a circle is:
where 
is the radius. Hence 
.
Now we have to input this value for in the Area of a cylinder formula:
(2)
Substituting (2) in (1):
(3)
Finally:
