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1. Three charges are arranged as shown. a. The magnitude of the electric field at point P due to one of the +Q charges is E. What is the magnitude of the net electric field at P? Write answer in terms of E and/or only. 2.Three charges are on a line as shown. An electron (charge -e, mass m) is released from rest at point A. We want to determine how fast the electron is moving at point B. -Z +Q W +Q b. The electric potential at point P due to one of the + charges is V. What is the net voltage at point P? Take V = 0 at infinity. Write answer in terms of Vand/or € only. 0 ...P 0 L A w 1 B b. Use conservation of energy to determine the speed of the electron a point B. 2L--- W +Z W a. A common mistake is to calculate the electric force on the electron at point A and then use Newton's 2nd law and constant acceleration kinematics to find the speed of the electron at point B. Why won't this work? -3Q -22 O

1. Three charges are arranged as shown. a. The magnitude of the electric field at point P due to one of the +Q charges is E. What is the magnitude of the net electric field at P? Write answer in terms of E and/or only. 2.Three charges are on a line as shown. An electron (charge -e, mass m) is released from rest at point A. We want to determine how fast the electron is moving at point B. -Z +Q W +Q b. The electric potential at point P due to one of the + charges is V. What is the net voltage at point P? Take V = 0 at infinity. Write answer in terms of Vand/or € only. 0 ...P 0 L A w 1 B b. Use conservation of energy to determine the speed of the electron a point B. 2L--- W +Z W a. A common mistake is to calculate the electric force on the electron at point A and then use Newton's 2nd law and constant acceleration kinematics to find the speed of the electron at point B. Why won't this work? -3Q -22 O

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question 1 and 2 please

1. Three charges are arranged as shown. a. The magnitude of the electric field at point P due to one of the + charges is E. What is the magnitude of the net electric field at P? Write answer in terms of E and/or only. 2. Three charges are on a line as shown. An electron (charge -e, mass m) is released from rest at point A. We want to determine how fast the electron is moving at point B. -Z W +Q b. The electric potential at point P due to one of the +Q charges is V. What is the net voltage at point P? Take V = 0 at infinity. Write answer in terms of V, and/or only. A 1 +Q 0 L W B b. Use conservation of energy to determine the speed of the electron a point B. -3Q 2L--- O W +Z I W a. A common mistake is to calculate the electric force on the electron at point A and then use Newton's 2nd law and constant acceleration kinematics to find the speed of the electron at point B. Why won't this work? -2Z
Transcribed Image Text:1. Three charges are arranged as shown. a. The magnitude of the electric field at point P due to one of the + charges is E. What is the magnitude of the net electric field at P? Write answer in terms of E and/or only. 2. Three charges are on a line as shown. An electron (charge -e, mass m) is released from rest at point A. We want to determine how fast the electron is moving at point B. -Z W +Q b. The electric potential at point P due to one of the +Q charges is V. What is the net voltage at point P? Take V = 0 at infinity. Write answer in terms of V, and/or only. A 1 +Q 0 L W B b. Use conservation of energy to determine the speed of the electron a point B. -3Q 2L--- O W +Z I W a. A common mistake is to calculate the electric force on the electron at point A and then use Newton's 2nd law and constant acceleration kinematics to find the speed of the electron at point B. Why won't this work? -2Z
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