Use the following graph to answer the following question:
if the incoming photon had a frequency of 8.0 e14 hz, would you have a photo-electron ejected? (5 points)

graph titled maximum kinetic energy of ejected photo electron versus incoming frequency is shown. the y axis is labeled maximum kinetic energy and scales from negative 3 to positive 3 electron volts. the x axis is labeled frequency from 0 to 11 times 10 to the 14 hertz. a line connects the points 0, negative 2 and 2.5, negative 1 and 5, 0 and 8, 1 and 10, 2.

yes

no

When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

In the circuit shown below, with each bulb holding a resistance of 60 ohms, how many amps of current are flowing? express your number as a decimal.