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A large electroscope is made with "leaves" that are 78 cm long wires with tiny 17g spheres at the ends. When charged, nearly all the charge resides on the spheres.
Part A If the wires each make a 30 degree angle with the vertical, what total charge Q must have been applied to the electroscope? Ignore the mass of the wires.
An isotope of the element Thallium, Tl-206, undergoes beta decay with a half life of 3.1 minutes. what mass of the isotope will be left after 9.3 minutes have elapsed
A parallel-plate capacitor has circulat plates of 7.00 cm radius and 1.01 mm separation. Calculate the capacitance in picofarads
A proton travels through uniform magnetic and electric fields. The magnetic field is in the negative x direction and has a magnitude of 2.77 mT. what is the magnitude of the net force acting on the proton
A 49.0 g ball of copper has a net charge of 1.7 µC. What fraction of the copper's electrons have been removed
An electron is accelerated to speed of 1.5*10^8 m/s. at that speed, compare the relativistic results to classical results for , find the electron rest energy according to the relativistic laws
Compute the value that the spring constant should have so that passengers undergo an acceleration of no more than 7.0 when brought to rest. Let be the total mass of the elevator and passengers.
A parallel-plate capacitor with area 0.900 m2 and plate separation of 4.00 mm is connected to a 18.00-V battery. Find the magnitude of the charge density on each plate
A nichrome toaster wire, initially at room temperature, carries 2.72A immediately after it's turned on. After the wire heats, the current drops to 2.44A
The coefficient of kinetic friction between rubber and dry concrete is typically 0.650. Illustrate w hat happened to the car's original kinetic energy?
A lens has a focal length of 40 mm magnifier. An object viewed with the magnifier is 5.3 mm tall, What is the angular magnification of the magnifier
A 25.0g sample of copper at 363 K is placed in 100g of water at 293 K. Calculate final temperature of the water
A cube of side of length 0.55 m has a temperature of 310 K and is in a room surrounded by 15.8ºC walls. what is the energy loss rate of the cube
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