A pilot makes an outside vertical loop of radius 320 m. At the top of his loop he is pushing down on his seat with only one-half of his normal weight. How fast is he moving?
What will be an ideal response?
39.6 m/s
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Fluid Flow: An ideal incompressible fluid flows at 0.252 m/s through a 44-mm diameter cylindrical pipe. The pipe widens to a square cross sectional area that is 5.5 cm on a side. Assume steady flow throughout the system.(a) What is the speed of the fluid through the square section of pipe?(b) What is the flow rate in liters per minute?
What will be an ideal response?
An object has an initial position 
, but is found a short time later at position 
, where 
In a frame in standard orientation on the earth’s surface, what is the direction of the object’s displacement during this time interval?
A. East B. West C. North D. South E. Down
The Earth is closest to the Sun in which month of the year?
July June March January
How many atoms are in one gram of 27 13 Al?
a. 
b. 
c. 
d. 
e. 