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A test charge of +7 µC is placed halfway between a charge of +6 μC and another of +3 μC separated by 16 cm. (a) What is the magnitude of the force (in N ) on the test charge?

A test charge of +1.9 uC is placed halfway between a charge of +4.6 µC and another of +7.4 µC separated by 14 cm. What is the magnitude of the force on the test charge?

A system of 1358 particles, each of which is either an electron or a proton, has a net charge of -1.002x10-16 C. How many electrons are in this system (exactly)? Submit Answer Tries 0/32 What is the mass of this system (to three significant digits)?

Scientists in the laboratory create a uniform electric field E = 1.2x106 V/m in a region of space where B = 0. ▼ Part A What are the components of the electric field in the reference frame of a rocket traveling in the positive x-direction at 7.0x105 m/s ? Express your answer using two significant figures separated by commas. ΠΠ ΑΣΦ Ez, Ey, Ez = Submit Part B Request Answer Br, By, B₂ = Submit What are the components of the magnetic field in the reference frame of the rocket? Express your answer using two significant figures separated by commas. ΠΡΕΙ ΑΣΦ ? Request Answer V/m ? T

Consider the two charges in the figure, which are moving in opposite directions and located a distance 11 cm on either side of the origin of the given coordinate system. Charge one is 19.5 uC and is moving at a speed 19.5 x U2 10° m/s, and charge two is -8.5 µC and is moving at a speed of 6.5 x 106 m/s. Notice that the positive z-direction in this figure is directed out of the page. 92 d What is the total magnetic field, in the z-direction, at a point Q located a distance 45 cm down the x-axis, as shown? d 91

Consider the electrostatic force between two particles of equal mass m = 25.6 × 10-26 kg and carrying different charges q1 = 14e and q2 = 28e, where e denotes the magnitude of the charge on an electron. At what distance, in meters, is the electrostatic force between these two particles equal to the weight of one of them?

If electrons have kinetic energy of 2000 eV, find (a) their speed, (b) the time needed to traverse a distance of 5 cm between plates that our horizontal, and (c) the vertical component of their velocity after passing between the plates if the electric field is 3.33 x 10^3 V/m.

Atoms have an equal number of electrons and protons so are electrically neutral. Atoms that have a net electrical charge are known as "ions". Positive ions - have "missing" electrons Negative ions - have "excess" electrons 3. The net charge of an object can be found be summing the individual charges. Since charge is quantized, all net charges are just an integer multiple of the elementary charge. q-ne where q is the net charge and n is an integer. For example, sodium can be a +1 ion and chlorine can be a -1 ion. What does this mean concerning their charge and structure? Revised 1/20 L2 D Ctlo But, what if you want to look at larger objects that are charged; e.g., objects made up of a huge number of atoms/molecules. How do these objects become charged?

Consider an electron that is 1.10-10 m from an alpha particle with charge 3.2.10-¹⁹ C. (a) What is the electric field due to the alpha particle at the location of the electron? The direction of the electric field by the alpha particle at the electron is Ela ate C (b) What is the electric field due to the electron at the location of the alpha particle? The direction of the electric field by the electron at the location of the alpha particle is #J N C |Ele- at a (c) What is the magnitude of the electric force on the electron? ✔N F = = (d) What is the magnitude of the electric force on the alpha particle? Fa= N (e) Do the two forces obey Newton's Laws?