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A charged belt, 60 cm wide,travels at 40 m/s between asource of charge and a sphere. The belt carries charge into thesphere at a rate corresponding to 100 µA. Compute the surface charge densityon the belt.
A common capacitor found in the lab is in the form of a cylinder of length 2.5 cm. Suppose it is an air filled cylindrical capacitor with radii 1.4 cm and 1.5 cm. What is the value of the capacitance
Freight trains can produce only relatively small acceleration and decelerations. How far will it travel in each case
water is circulating through a closed system of pipes in a two floor apartment. on the first floor the water has a
A circular hole in an aluminum plate is 3.263 cm in diameter at 0.000°C. What is its diameter (in cm) as the temperature of the plate is raised to 129.8°C? Give the answer to four significant figures. The linear expansion coefficient of aluminum i..
An electron is shot upward directly perpendicular to the lower plate of a parallel plate capacitor. Its initial velocity is 3.0 x 104 m/s. What must be the potential of the upper plate if the electron stops just before reaching it? The lower plate..
a concrete wall of a cold storage room measures 3.0 m high 5.0 m wide and 20 cm thick. the room temperature is
A proton is at the origin and an electon is at the point x = 0.41 nm, y = 0.36 nm. Find the electric FIELD at the proton,
A car dealer claims that his product will accelerate at a constant rate from rest to a speed of 200 km/hr in 8s. What estimated distance will the car travel.
a spherical body of mass m and charge q moves through a viscous medium at a constant speed a q ex under the influence
You spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.437 × 10-3 m3/s, At what speed does the water exit the nozzle
The nucleus 11-4 Be undergoes B- decay with a half-life of 13.8 sec. The atomic mass of 11-4 Be is 11.021660 u. What is the total kinetic energy of the decay products
An electric heater used to boil small amounts of water consists of a 15-Ω coil that is immersed directly in the water. Itoperates from a 120-V socket. How much times is required for this heater to raise the temperature of 0.5 kg of water from 13de..
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