A boy throws a small stone into a pond. Waves spread out from where the stone hit the water and travel to the side of the pond. 10 waves reach the side of the pond in four seconds. What is the frequency of the waves?

A 0.4Hz
B 1.6Hz
C 2.5Hz
D 40 Hz

Alivestock company reports that the mean weight of a group of young steers is 1100 pounds with a standard deviation of 93 pounds. based on the model n(1100,93) for the weights of steers, what percent of steers weigh a) over 1050 pounds? b) under 1300 pounds? c) between 1150 and 1250 pounds?

What is the role of the ocular lens?

What should the power status of a circuit be when measuring resistance with an ohmmeter?