Using data from seismic waves, geologists have learned that earth’s interior is made up of several
a. continents.
b. layers.
c. ridges.
d. trenches.

The ph is the a.independent variable b.the dependent variable c.control group

An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 26 mm and 103 mm. the electric potential of the inner conductor with respect to the outer conductor is - 700 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to

Which of the following is a measure of the amount of light a star directly emits?               a.  luminosity    b.  intensity    c.  wavelength    d.  brightness