Use the momentum equation for photons found in this week's notes, the wavelength you found in #3, and plank’s constant (6.63e-34) to calculate the momentum of this photon:

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error

Which features on mars point to the possibility of liquid water on the planet? impact craters with sharp rims volcanic cones with craters gullies and stream-like channels mountain ranges with faults

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87