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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?
ball b is hanging from an inextensible cord. an identical ball a is released from rest when it is just touching the
A charge of 24.5uC is located at (4.40m, 6.22m), and a charge of-11.2uC is located at (-4.50m, 6.75m). What charge must be locatedat (2.23m, -3.31m) if the electric potential is to be zero at theorigin?
Suppose a grower sprays 7.2 kg of water at 0 °C onto a fruit tree. How much heat is released by the water when it freezes
a young hockey player stands at rest on the ice holding a 1.3-kg helmet. the player tosses the helmet with a speed of
A 12 volt battery powers a circuit that consists of a ten ohm resistor in series with a ten ohm and a 15 ohm that are in parallel. How much current flows through the 15 ohm resistor
A bob of mass m = 0.300kg is suspended from a fixed point with a massless string of length L = 21.0cm, What tangential speed v must the bob have so that it moves in a horizontal circle with the string making an angle 24.0
A 32cm string being held at a tension of 64.5N has a fundamental frequency of 440Hz. What are the second and third harmonics of the string
batteries power much of our modern mobile lifestyle. aa batteries are often rated in units of milliampere hours mah.
Imagine holding the above plastic block under water. When released, what is the upward acceleration of the block
A dolphin at Seaworld is to jump through a hoop held in the air by a trainer, At what speed did the dolphin leave the water
The dipole moment of the water molecule (H2O) is 6.17 x 10-30 C.m. Consider a water molecule located at the origin whose dipole moment p points in the +x-direction. What is the direction of the electric force
question a 5 turn loop of wire with a radius of 4cm moves toward a 0.15t magnetic field in a 3 second time interval.
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