The chromosphere is often marked by eruptions on the solar surface called ____
a. solar flares
b. prominences
c. solar nodes
d. diamond rings
e. coronal mass ejections
b
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Two charges, Q1 and Q2, are separated by a certain distance R. If the magnitudes of the charges are halved, and their separation is also halved, then what happens to the electrical force between these charges?
A) It increases by a factor of 16. B) It increases by a factor of 8. C) It is doubled. D) It is quadrupled. E) It remains the same.
A(n) ____ is a single conjecture that can be tested
a. hypothesis b. paradigm c. natural law d. model e. theory
A rod is 2.40 m long and has a diameter of 2.50 mm. A force of 2000 N is applied to the end to stretch the rod by 1.00 mm. What is the tensile modulus for this rod?
a. 
b. 
c. 
d. 
e. 
The figure below shows a container filled with water to the height shown. When we compare the pressure at A to the pressure at B, we find that
A.
.B.
.C.
D.
E.