Practice problems
1. a concave mirror has a focal length of 6.0 cm. an object with
a height of 0.60 cm is placed 10.0 cm in front of the mirror.
a. calculate the image distance. 15 cm
b. calculate the image height. -0,9 cm
2. in the diagram below, the object is between the mirror and f.
use the data in the diagram to answer the questions below.
a. calculate the image distance.
b. calculate the image height.
ci
4 cm
2 cm

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2