A ball of 80mg mass and a 2*10-8 charge is hung with a thread in a uniform horizontal electric field of 2*104V/m. What is the angle made by the thread with vertical? a) 27 degree b) 30 degree c) 45 degree d) 0 degree
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A ball of 80mg mass and a 2*10-8 charge is hung with a thread in a uniform horizontal electric field of 2*104V/m. What is the angle made by the thread with vertical?
a) 27 degree
b) 30 degree
c) 45 degree
d) 0 degree
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- A small object has a mass of 2.0 × 10-3 kg and a charge of -39 µC. It is placed at a certain spot where there is an electric field. When released, the object experiences an acceleration of 1.7 x 10³ m/s² in the direction of the +x axis. Determine the electric field, including sign, relative to the +x axis. Number i 8.7 eTextbook and Media Hint Units N/C Assistance Used According to Newton's second law, an object will accelerate in the direction of the net force on that object. The force can be calculated by a = ΣF/m. In this case, the force is the electrical force on the charged particle due to the electric field. With the force known, the magnitude of the electric field can be calculated through equation 18.2. Remember that a positively charged object will experience a force in the same direction as the electric field and a negatively charged object will experience a force in the opposite direction.Two point charges each have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charges? Ozero O 9.0x107 N/C O 18 x 107 N/C 4.5 x 107 N/C 4I need help solving this question related to electric fields
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- Levitation: The largest electric field strength you can create in air before dielectric breakdown (a spark) occurs is about 3.0 x 10°V/m. Suppose you created an electric field with this strength – pointing directly upward – between a set of parallel plates that are 9.9cm apart. You want to use this system to levitate water droplets with a mass of 1.8g. (a) How much charge would you have to put on a droplet to make it levitate? (b) Suppose that 43 charged droplets are levitating and the field strength suddenly drops by 24 percent, to about 2.3 x 106 V/m, how quickly would the droplets accelerate? EAn electron is placed at rest in an electric field of 510 N/C. Which of the followings is the speed of the electron 47.0 ns after being released?A particle with charge +4 nC (a nanocoulomb is 1 x 109 C) is located at the origin. What is the electric field due to this particle at a location m? 7 E = N/C