A 15 mm tall object is placed 20 cm in front of a concave spherical mirror of focal length f. The image produced by the mirror is upright and is 45 mm tall. The value of f is

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

The precision of a laboratory instrument is ± 0.05 g. the accepted value for your measurement is 7.92 g. which measurements are in the accepted range? check all that apply. 7.85 g 7.89 g 7.91 g 7.97 g 7.99 g

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c