The surface tension of water is 0.073 N/m. How high will water rise in a capillary tube of diameter 1.2 mm?
A)
1.2 cm
B)
1.5 cm
C)
2.2 cm
D)
2.5 cm
E)
2.8 cm
D
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The principal axis is the
A) straight line drawn from the center of curvature to the mid point of the mirror. B) straight line drawn from the center of curvature to any point of the mirror. C) straight line drawn from the center of curvature to a point on the outer edge of the mirror. D) straight line joining any two points on the mirror. E) None of the other answers given is correct.
The most easily visible supernova remnant is the _______________ Nebula
Fill in the blank(s) with correct word
A spring-powered dart gun is un-stretched and has a spring constant 16.0 N/m. The spring is compressed by 8.00 cm and a 5.00 gram projectile is placed in the gun. The velocity of the projectile when it is shot from the gun is
A. 2.04 m/s. B. 2.75 m/s. C. 3.50 m/s. D. 3.75 m/s E. 4.53 m/s.
The mass in the figure slides on a frictionless surface. If m = 2 kg, k1 = 800 N/m and k2 = 500 N/m, the frequency of oscillation (in Hz) is approximately
?
?
a.
6.
b.
2.
c.
4.
d.
8.
e.
10.