A horizontally moving positive sodium ion enters a magnetic field that points up. The magnetic force pushes the charge out of its original path. 
When viewed as shown on this page, what direction will the magnetic force point?
A. Out of the page
B. Into the page
C. There is not enough information to answer
Answer: A
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Heat is generated uniformly in the fuel rod of a nuclear reactor. The rod has a long, hollow cylindrical shape with its inner and outer surfaces at temperatures of Ti and To, respectively. Derive an expression for the temperature distribution.
GIVEN
• A long, hollow cylinder with uniform internal generation
• Inner surface temperature = Ti
• Outer surface temperature = To FIND
• The temperature distribution
ASSUMPTIONS
• Conduction occurs only in the radial direction
• Steady state prevails
SKETCH
Louis Pasteur's contribution was
What will be an ideal response?
The planet Jupiter is 7.78 × 1011 m from the sun. How long does it take for Jupiter to orbit once about the sun given that the distance from the earth to the sun is 1.50 × 1011 m?
A) 2.3 years B) 5.2 years C) 6.0 years D) 12 years E) 27 years
An athlete competing in long jump leaves the ground with a speed of 9.14 m/s at an angle of 35.0° above the horizontal. How long does the athlete stay in the air?
A) 0.501 s B) 0.876 s C) 1.07 s D) 2.53 s E) 0.535 s