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When a certain element is bombarded with high-energy electrons, Kα X-rays that have an energy of 8578 eV are emitted. Determine the atomic number Z of the element. Use the Bohr model as necessary.
You are traveling on an airplane. The velocity of the plane with respect to the air is 110 m/s due east, What is the heading of the plane with respect to the ground
A boat capable of making 6.0 km/h in still water is utilized to cross a river flowing at speed of 4.0 km/h. The boat is directed (from the perpendicular to the shore) in such a way that its resulting motion is straight across the river.
Decide the drift velocity of electrons in a 5-m long gold wire that carries a current of I = 10 A, if the wire is at a temperature of 87oC and if the total resistance of the wire is R =0.04 Ω.
Consider that a 0.105 mm diameter tungsten filament in a light bulb needs to have a resistance of 0.25 Ω at 20.0°C. How long should the filament be in m, assuming the resistivity of tungsten is 5.60 x 10-8 Ω·m?
A long straight wire carries a 40.0 A current in the +x direction. What is the force on the electron at this instant
A 720 gram grinding wheel 30.0cm in diameter is in the shape of a uniform solid disk. What torque does friction exert while this wheel is slowing down
An uncharged capacitor and a resistor are connected in series to asource of emf. If emf = 6.00 V, C = 22.0 µF,and R = 100 , find the following. the time constant of the circuit
There is a minimum time difference that a seal can sense, and this leads to a limitation on a seal's direction sense. Seals can distinguish between two sounds that come from directions 3o apart in air, but this increases to 9o in water. Explain wh..
you throw a ball m 2kg with an initial velocity of 20 ms at an angle of 60 degrees from the top of a 30m cliff. a
zero a hypothetical planet has a mass of 3.0 x 1023 kg a radius of 3.0 multiplied by 106 m and no atmosphere. a 13 kg
A small car is pushing a larger truck that has a dead battery. The mass of the truck is twice as large as the mass of the car. At one instant of time the truck and car both have an acceleration of 3.5 m/s2.
A) Discuss the ways in which batteries and capacitors are similar and the ways in which they differ. Find total energy stored in a 10 V, 100 Amp-hr battery.
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