Awoman stands on a scale in a moving elevator. her massis
60.0 kg and the combined mass of the elevator and scale is
anadditional 815 kg. starting from rest, the elevatoraccelerates
upward. during the acceleration, there is tensionof 9410 n in the
hoisting cable. what does the scale readduring the
acceleration?

Which type of basaltic lava flow has a fairly smooth

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

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