Answer:
Almost all skin cancers (approximately 99% of non-melanoma skin cancers and 95% of melanoma) are caused by too much UV radiation from the sun or other sources such as solaria (solarium, sunbeds, and sun lamps).
Explanation:
Skin cancer develops in the cells in the epidermis – the top or outer layer of the skin. UV radiation is made up of UVA and UVB rays which are able to penetrate the skin and cause permanent damage to the cells below:
UVA penetrates deeply into the skin (the dermis) causing genetic damage to cells, photo-ageing (wrinkling, blotchiness etc) and immune-suppression.
UVB penetrates into the epidermis (top layer of the skin) causing damage to the cells. UVB is responsible for sunburn – a significant risk factor for skin cancer, especially melanoma.
If the body is unable to repair this damage the cell can begin to divide and grow in an uncontrolled way. This growth can eventually form a tumor.
UVA and UVB both contribute to sunburn, skin ageing, eye damage and melanoma and other skin cancers.
A. attract each other.
The Law of Universal Gravitation discusses the phenomenon of gravity. Remember that gravity is the force that keeps us on Earth; the Earth pulls us down, and our bodies pull back. Gravity is the force of attraction, so the correct answer is a).
F=G*(M*m)/r^2
If you double the diameter, you double the radius. So this means r^2 is now (2*r)^2.
If you quintuple it's mass, you multiple M by 5. So M is now 5*M.
Now your equation is:
F=G*(5M*m)/(2r)^2
or
F= 5 G*(M*m)
------------------
4 r^2
so your answer is F (the force due to your mass and gravity or "weight") would change by a factor of 5/4!
F2= 5/4*F1 OR Weight (From New Earth) = 5/4*Weight(from old earth)
Energy change = -303050 J
Explanation:
the heat energy Q is given by the formula
Q= m C ΔT
m= mass of water=1.25 Kg
C= specific heat of water= 4180 J/Kg °C
ΔT= change in temperature =55-113= -58°C
Q= 1.25 (4180) (-58)
Q=-303050 J
Negative sign shows that the energy is released or lost.
Answer:
B
Explanation:
The reason why is simple all stars hold key... compounds necessary to life. when a star supernovas it blast all of those out like a shotgun.
