Choose any real-life situation where the concept of Physics In her physics lab, Jessica rolls a g marble down a ramp and off the table with a horizontal velocity of 1. The marble falls in a cup placed 0.
Attendance at this session is mandated by Massachusetts state law. Junior Lab students do not require additional levels of radiation safety training which would qualify them as radiation workers. As discussed in your training, there are a few simple precautions to be taken for safely working with sealed sources of radiation: Do not handle radioactive sources any more than you need to.
Work quickly when transferring or positioning radioactive sources. Never take a source away from the Junior Lab, even temporarily.
The senior staff are legally responsible for the sources and must periodically account for their presence and condition. Replace sources in the lead storage cabinet when they are not in use and ensure that the cabinet is locked at all times.
Keep sources away from your body. Never bring Physics 2 lab radioactive source near your eyes because they are particularly sensitive to radiation. Be aware of the sources being used in neighboring experiments.
Be aware of neighboring experimenters when using sources. Ionizing radiation damages tissue; any exposure should therefore be minimized. The unit of radiation exposure is the rem roentgen equivalent man. If you follow the Junior Lab guidelines, your exposure will be only a fraction of the dose you receive from the natural background.
A survey meter is available for you to check radiation levels yourself. Radioactive sources emit three types of radiation: Most of the sources in Junior Lab emit only gamma radiation. Of the sources which do emit alpha or beta particles, most are enclosed in plastic or metals, which prevent particulate radiation from escaping.
These sources should never be handled. Handling of open alpha- or beta-emitters can result in contamination or dangerous dosages to the skin. Radiation is quantified is several different ways: A one-curie source has an activity of 3.
The curie is an extraordinarily large unit: For photons gamma rays and electrons and positrons beta particlesthe radiation weighting factor is unity; for helium nuclei alpha particlesit is 20; for protons with energy greater than 2 MeV it is 5; and for neutrons it ranges from 5 to 20, depending on the energy.
When you use the survey meter in the lab, the readings are in rads, and you must consider the type of particle when you work out the equivalent dose. For gamma rays with energy greater than 1 MeV, a useful approximation is that the equivalent dose due to a source with an activity of C microcuries is 5.
For gamma rays with energy less than 1 MeV, this formula is still approximately true for a full-body dose. However, low-energy gamma rays deposit their energy in a smaller mass of tissue than high-energy gamma rays and can cause high local doses.
For example, the local dose to the hands from handling a 10 keV source can be up to 25 times the value given by the above formula; hands, however, have a higher tolerance to radiation than inner organs or eyes.2 -3 perpendicular to a contour line, you are going either straight uphill, or straight downhill.
Similarly, if you "walk" along an equipotential contour line, the potential does not go up or down. Experiment Telescope 97 Experiment 11 Dispersion from a prism and index of refraction Experiment 12 Polarization by absorption and reflection /2 Physics Lab Report Format General Remarks: Writing a lab report is the only way your TA will know what you have done during the lab and how well you have understood the process and the results.
Lab Manual for General Physics II - Department of Physics & Astronomy Texas Christian University, Fort Worth, TX Spring The Johns Hopkins University Applied Physics Laboratory We solve complex research, engineering, and analytical problems that present critical challenges to our nation.
For a physics lab, I measured length, width, thickness, and mass of 2 blocks of wood, 3 trials each. There were 2 questions on the lab that I did not understand how to do. 1. For each trial, find the ratio between the mass and the volume.
Based on your ; PHYSICS.