What is the element required for solar energy conversion ______?
What is the element required for solar energy conversion ______?
A. Ultra pure carbon
B. Silicon
C. Beryllium
D. Tantalum
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The M.K.S. system was first introduced by _________ ?
The M.K.S. system was first introduced by _________ ?A. Giorgi
B. Archimedes
C. Eienstein
D. NewtonThe M.K.S. system was first introduced Giorgi.
M stands for meters.
K stands for kilograms.
S stands for seconds.
These three units work together with various equations. They are three basic units within the SI system. Many other units can be described using those three units. For example, a Newton (unit of force) is a kg m/s^2. A kilogram multiplied by a meter divided by seconds squared.The gases which are used by drivers as an artificial atmosphere are helium and_____________?
The gases which are used by drivers as an artificial atmosphere are helium and_____________?A. Nitrogen
B. Oxygen
C. Neon
D. Carbon monoxideSelect the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy?
Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy?
A. radio, visible, infrared, ultraviolet, x-ray, gamma ray
B. radio, infrared, visible, x-ray, gamma ray, ultraviolet
C. visible, radio, infrared, ultraviolet, x-ray, gamma ray
D. radio, infrared, visible, ultraviolet, x-ray, gamma rayGulf streams are caused by__________.
Gulf streams are caused by__________.
A. Cyclones
B. Ocean Pressure
C. Temperature
D. Difference in water levelThe PH of milk is __________?
The PH of milk is __________?A. 6.0
B. 6.5
C. 7.0
D.7.5Milk fresh from the cow typically has a pH between 6.5 and 6.7. The pH of milk changes over time. As milk goes sour, it becomes more acidic and the pH gets lower. This occurs as bacteria in milk convert the sugar lactose into lactic acid
It is observed that the total pressure exerted by air on the man of average size is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is because of__________?
It is observed that the total pressure exerted by air on the man of average size is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is because of__________?A. An equal and opposite pressure acts from inside
B. of the height of a man
C. of gravity
D. Earth pulls the man upward
E. None of these