The diffusion constant for water in air is 
How long would it take a water molecule to diffuse a distance of 10.0 meters?
A. 400 hours
B. 450 hours
C. 500 hours
D. 580 hours
E. 600 hours
D. 580 hours
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If R1 = 3.0 ?, R2 = 6.0 ?, R3 = 12 ?, and I = 0.50 A, at what rate is heat being generated in R1?
a.
20 W
b.
17 W
c.
12 W
d.
31 W
e.
6.0 W
Spherical Mirrors: A concave mirror having a focal length of magnitude 5.0 cm forms an image 4.0 cm behind the mirror. Where is the object for this image?
A. 2.2 cm in front of the mirror B. 2.2 cm behind the mirror C. 9.0 cm in front of the mirror D. 1.0 cm behind the mirror E. 20 cm behind the mirror
A telescope is constructed with two lenses separated by a distance of 25 cm. The focal length of the objective is 20 cm. The focal length of the eyepiece is 5 cm. Calculate the magnitude of the angular magnification of the telescope.
A. 6 B. 4 C. 8 D. 10 E. 5
Describe a conservative force
What will be an ideal response?