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An electroscope has been charged by induction using an ebonite rod rubbed with fur. a charge object is brought close to the top of the electroscope and it was noted that the leaves of the electroscope opened further. identify the charge on the object and explain your reasoning
In order to calibrate the strength of an Fe-55 source, many measurements of the radiation field are made with the same detector located at different distances.
An aluminum cylinder weighs 1.00 N. When this same cylinder is completely submerged in alcohol, the volume of the displaced alcohol is 3.85 10-5 m3. What is the specific gravity of the alcohol
A fighter jet lands on the deck of an aircraft carrier. It touches down with a speed of 70.4 m/s and comes to a complete stop over a distance of 197.4 m, What is the acceleration of the jet
Oscillation of a 500 Hz tuning fork sets up standing waves in a string clamped at both ends. The wave speed for the string is 430 m/s. What is the length of the string
A long-jumper leaps of the horizontal at a speed of 11.0 m/s at an angle of 20 degrees. what is his toal distance traveled
A mass spectrometer is used to examine the isotopes of uranium. What is the distance between the impact points formed on the photographic plate by singly charged ions of 235U and 238U
A person is riding a bike, the wheels of a bike have an angular velocity of +18.5 rad/s. Evaluate the angular acceleration of each wheel
One mole of a dilute gas initially has a pressure equal to 1.00 atm, and a volume equal to 23.0 L and an internal energy of 3.49 kJ. Find the heat absorbed by the gas
The heating element of a clothes dryer has a resistance of 11 ? and is connected across a 240-V electrical outlet. What is the current in the heating element
a 40g horizontal metal bar 12cm long is free to slide up and down between two tall vertical metal rods that are 12cm
Consider an H-like atom in the quantum mechanical description. How many electrons fit into the n=4 shell of this atom, assuming the states coincide with that of the H-atom?
A model rocket is fired vertically from rest. It has a net acceleration of 15.5 m/s2. How long after liftoff does the rocket return to the ground
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