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Problem 3 (25pts). A Van de Graaf generator's sphere has a diameter of 0.350 m and...
Problem 3 (25pts). A Van de Graaf generator's sphere has a diameter of 0.350 m and...
Problem 3 (25pts). A Van de Graaf generator's sphere has a diameter of 0.350 m and is held at a potential of 25.0 kV. (a) What is the charge on the sphere? (b) If the radius of the generator's sphere is reduced to 0.050 m, what then is the charge on the sphere? (c) Based on the above what can you conclude about how charge distributes itself on the surface of an irregularly shaped conductor?
3) The electric field between a charged Van de Graaf generator and its grounding sphere is...
3) The electric field between a charged Van de Graaf generator and its grounding sphere is generally non uniform. This is true in the example diagrammed below where the surface of the generator is at a potential of 5000 V relative to the grounding sphere which is at a potential of 0 V. The shapes of several equipotential surfaces are sketched as well as the velocity vector of an electron that is crossing the 1200 V equipotential surface at a...
A demonstration Van de Graaff generator has a 25.0 cm diameter metal sphere that produces a...
A demonstration Van de Graaff generator has a 25.0 cm diameter metal sphere that produces a voltage of 100 kV near its surface. What excess charge resides on the sphere? (Assume that each numerical value here is shown with three significant figures.) [Answer: 1.4x10-6 C]
A research Van de Graaff generator has a 3.60 m diameter metal sphere with a charge...
A research Van de Graaff generator has a 3.60 m diameter metal sphere with a charge of 1.02 mC on it (a) What is the electric potential on the surface of the sphere? (b) At what distance from its center is the potential 4.00 MV? m (c) An oxygen atom with three missing electrons is released near the surface of the Van de Graaff generator. What is its kinetic energy in Mev at the distance determined in part (b)? MeV
A Van de Graaf generator can generate large static electric charges. Below is a picture of...
A Van de Graaf generator can generate large static electric charges. Below is a picture of a Scottish Lad experiencing the effects of a Van de Graaf generator that he's touching with his hand (Photo from SciFun a Scottish science show). Say he's built up 2.5 μc of charge on his head that is a perfect sphere of radius 10 cm. a. What is the magnitude of the electric field near his scalp? b. If he has 5 hairs per...
(10%) Problem 3: A research-level Van de Graaff generator has a 2.05 m diameter metal sphere...
(10%) Problem 3: A research-level Van de Graaff generator has a 2.05 m diameter metal sphere with a charge of 5.1 mC on it. 33% Part a) What is the potential near its surface in MV? Assume the potential is equal to zero far away from the surface. Grade Summary Deductions 8% Potential V- 4.47-I 92% sin0 cotanasin acos atanacotan sinhO cosh0 tanhOcotanh0 78 9 HOME Submissions Attempts remaining:6 (2% per attempt) detailed view 0 END 2% 2% 2% 2%...
A research Van de Graaff generator has a 2.10 m diameter metal sphere with a charge...
A research Van de Graaff generator has a 2.10 m diameter metal sphere with a charge of 40.0 µC on it. (c) An oxygen atom with three missing electrons is released near the Van de Graaff generator. What is its kinetic energy in keV at this distance?
The dielectric strength of air (that is, the maximum electric field air can withstand before it...
The dielectric strength of air (that is, the maximum electric field air can withstand before it becomes a conductor due to ionization) is 3.0 times 10^6 V/m. Small van de Graaf generators are commonly used in hair-raising demonstrations that must achieve a high electric potential. A spherical conductor has a radius of 30 cm (about 1 ft). What is the maximum charge that can be placed on the sphere before dielectric breakdown of the surrounding air occurs? For the charge...
The dielectric strength of air (that is, the maximum electric field air can withstand before it...
The dielectric strength of air (that is, the maximum electric field air can withstand before it becomes a conductor due to ionization) is 3.0 times 10^6 V/m. Small van de Graaf generators are commonly used in hair-raising demonstrations that must achieve a high electric potential. a) A spherical conductor has a radius of 30 cm (about 1 ft). What is the maximum charge that can be placed on the sphere before dielectric breakdown of the surrounding air occurs? b) For...
A van de Graaf generator has a motor that runs its 57 cm long (full length...
A van de Graaf generator has a motor that runs its 57 cm long (full length around) rubber belt at a speed of 103 cm/s. When the motor has run for 19 s, the safety pole bends like a spring of stiffness 2.2 N/m, pulling its ball-like tip inward to a distance of 44 cm from the center of the tip of the safety pole to the center of the 23 cm diameter globe. They have an unbent distance of...
Problem 3 (25pts). A Van de Graaf generator's sphere has a diameter of 0.350 m and is held at a potential of 25.0 kV. (a) What is the charge on the sphere? (b) If the radius of the generator's sphere is reduced to 0.050 m, what then is the charge on the sphere? (c) Based on the above what can you conclude about how charge distributes itself on the surface of an irregularly shaped conductor?
3) The electric field between a charged Van de Graaf generator and its grounding sphere is generally non uniform. This is true in the example diagrammed below where the surface of the generator is at a potential of 5000 V relative to the grounding sphere which is at a potential of 0 V. The shapes of several equipotential surfaces are sketched as well as the velocity vector of an electron that is crossing the 1200 V equipotential surface at a...
A research Van de Graaff generator has a 3.60 m diameter metal sphere with a charge of 1.02 mC on it (a) What is the electric potential on the surface of the sphere? (b) At what distance from its center is the potential 4.00 MV? m (c) An oxygen atom with three missing electrons is released near the surface of the Van de Graaff generator. What is its kinetic energy in Mev at the distance determined in part (b)? MeV
A Van de Graaf generator can generate large static electric charges. Below is a picture of a Scottish Lad experiencing the effects of a Van de Graaf generator that he's touching with his hand (Photo from SciFun a Scottish science show). Say he's built up 2.5 μc of charge on his head that is a perfect sphere of radius 10 cm. a. What is the magnitude of the electric field near his scalp? b. If he has 5 hairs per...
(10%) Problem 3: A research-level Van de Graaff generator has a 2.05 m diameter metal sphere with a charge of 5.1 mC on it. 33% Part a) What is the potential near its surface in MV? Assume the potential is equal to zero far away from the surface. Grade Summary Deductions 8% Potential V- 4.47-I 92% sin0 cotanasin acos atanacotan sinhO cosh0 tanhOcotanh0 78 9 HOME Submissions Attempts remaining:6 (2% per attempt) detailed view 0 END 2% 2% 2% 2%...
The dielectric strength of air (that is, the maximum electric field air can withstand before it becomes a conductor due to ionization) is 3.0 times 10^6 V/m. Small van de Graaf generators are commonly used in hair-raising demonstrations that must achieve a high electric potential. A spherical conductor has a radius of 30 cm (about 1 ft). What is the maximum charge that can be placed on the sphere before dielectric breakdown of the surrounding air occurs? For the charge...
The dielectric strength of air (that is, the maximum electric field air can withstand before it becomes a conductor due to ionization) is 3.0 times 10^6 V/m. Small van de Graaf generators are commonly used in hair-raising demonstrations that must achieve a high electric potential. a) A spherical conductor has a radius of 30 cm (about 1 ft). What is the maximum charge that can be placed on the sphere before dielectric breakdown of the surrounding air occurs? b) For...
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