What kind of image is formed by a plane mirror? a. real, inverted, larger, and farther b. virtual, upright, front-back reversal, of the same size, and at the same distance c. virtual, upright, and larger than the object d. real, inverted, smaller, and closer

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

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?

Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2 . how much is the spring compressed x from its natural length?