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Problem: Student archaeologists. An archaeological dig turns up large numbers of pottery shards, broken stone implements, and other artifacts. Students working on the project classify each artifact and assign it a number. The counts in different categories are important for understanding the site, so the project director chooses 2% of the artifacts at random and checks the students' work.
Required:
1. What are the population and the sample here?
Netrons are slowed down to thermal energies in a 1:1 mixture of H2O and Uranium(4 atom % U-235,96 atom % U-238). Estimate the probability that a 0.0253 eV neutron will have scattering collision with H2O.
A pipe of 20 cm diameter is carrying a discharge of 0.1 m3/sec. If the diameter of the pipe is reduced to 5 cm at its end, calculate the velocity and velocity head at the pipe outlet.
A police investigator measures straight skid marks 29.0 m long in an accident investigation. Assuming a friction force and car mass the same as in the problem above, what was the minimum speed of the car when the brakes locked
a harmonic wave is traveling along a rope. it is observed that the oscillator that generates the wave completes 43.0
a piece of balsa wood with density 0.12gcm3 with mass of 30g in air is affixed to alead sinker with a mass of 400g.
Two 18 cm diameter charged disks face each other, 25 cm apart. Both disks are charged to - 30 nC. What is the electric field strength at the midpoint between two disks.
the electric field 0.340 m from a very long uniform line of charge is 650 nc. how much charge is contained in a 2.00-cm
A girl delivering newspapers travels 2 blocks west, 2 blocks north, and then 5 blocks east. What is her resultant displacement
It takes 2.47ms for the current in an LR circuit to increase from zero to 0.70 its maximum value. Determine the time constant of the circuit
what are the direction and magnitude of your total displacement if you have traveled due west with a speed of 20.0 ms
On a frictionless horizontal surface a 1.50 kg mass traveling at3.50 m/s collides with and sticks to a 300 kg mass that isinitially at rest. This system runs into an ideal spring forceconstant 50.0 N/cm.
At 25 meter from a sound source, the intensity level is 55 dB. Find what is the level at the distances of 50 meter
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