Practice Problems 1. Calculate the net electric field at point P, which is 0.100 m from two similar spheres with positive charges of 2.00 C and separated by a distance of 0.0600 m, as shown in the figure below. P 0.100 m 0.100 m 72.5° 72.5° 0.0600 m +2.00 C +2.00 C
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- O e. 5.12J The unit of the electric "coulomb" constant k is (N.m2 /C2) An equivalent unit would be: O a. Watt.s/C2m Ob. Watt.s?/c². m² C Watt.m.s?/C? d. Watt.m.s/C2 Oe Watt.m2.s/C? NEXA homemade capacitor is assembled by placing two 8-in. pie pans 6 cm apart and connecting them to the opposite terminals of a 9-V battery. Part A Estimate the capacitance. Express your answer using one significant figure. 国 C = 5.74 • 10 - 10 F Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remainingThe unit of the electric "coulomb" constant k is (N.m²/C² ) An equivalent unit would be: O a Watt.s?/c².m? Ob Watt.m.s²/C? Oc Watt.s/C2m Od Watt.m.s/C² De Watt.m2. s/C?
- A sold sphere 20 cm in radus carries 14 pC, dibuted unity throughout ts volume. Find the electric field strength 10 cm from the show's Express your answer using two significant figures AZ O B₁- Submit Part B Subm Bequent Find the field angh 20 cm from the spe Express your answer using two significant figures. Part C AL A Fedtd amergh ces to the s Express your newer using two signant ? At ? MN/C MN/C MN/CPart A The lines show the equipotential contours in the plane of three point charges, Q1, Q2, and Q3. The values of the potentials are in kV as indicated for the +5, 0, and -5 kV contours. The positions of the charges are indicated by the dots. cm 1 Q₁. Volts 2 +5 Q3 The letters are on the equipotential contours. Q₂ # m26.12 05.01 V. J1.12 V 04.01 v 07. O1 V. J101. V 12.0A. 14.01. 18.01. Please calculate.the. monent of mertia. values . for each figures accordme to the defined rotation axises Lang, thin.rad. with rotation. axis through Center. I cin= IML 12 Jecolor
- An electron has an initial velocity of 5.00106m/s in a uniform 2.0010m/s electric field. The field accelerates the election in the direction opposite to its initial velocity, (a) What is the direction of the electric field? (b) How far does the electron travel before coming to rest? (c) How long does it take the electron to come to rest? (d) What is the electron's velocity when it returns to its starting point?Suppose Earth and the Moon each carried a net negative charge Q . Approximate both bodies as point masses and point charges. (a) What value of Q is required to balance the gravitational attraction between Earth and the Moon? (b) Does the distance between Earth and the Moon affect your answer? Explain. (c) How many electrons would be needed to produce this charge?Consider an electron that is 1010 m from an alpha particle (q=3.21019C) . (a) What is the electric field due to the alpha particle at the location of the electron? (b) What is the electric field due to the electron at the location of the alpha particle? (c) What is the electric force on the alpha particle? On the electron?
- (a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) Imagine adding electrons to the pin until the negative charge has the very large value 1.00 mC. How many electrons are added for every 109 electrons already present?A proton enters the uniform electric field produced by the two charged plates shown below. The magnitude of the electric field is 4.0105 N/C, and the speed of the proton when it enters is 1.5107 m/s. What distance d has the proton been deflected downward when it leaves the plates ?Part A An electric dipoke is mado of two charges of equal magnitudes and opposite signs, The positive charge, q 20 Cs locatod at the pont yz 80 cm 0 cm, O cm), whie the negative charge is located at the pont (xyz(80 cm 0 cm, 0 cm) How much work will be done by an electric feld E(8 Ov10 N/C)j to rotate the dpole by 60 Hint jis the unit vector along the y axis (same as ) O 222J O 03J O 223 O 53J Submit Request Answer