Electricity and Magnetism Answers

what is the magnitude and direction of the electric field at .35m from a -6.5 x 10^-8 C point charge

A high-speed electron having a mass of 9 x 10^ -31 kg is moving at right angle to 0.75-T magnetic field and has a speed of 2.5 x 10^7m/s. What is the size of the force acts on the high-speed electron? What is the magnitude of acceleration of the particle?

A small sphere of charge +6 x 10^-6C is suspended by a string of negligible mass. A charge of -9 x 10^-6 C is placed directly to the right of the sphere and 0.22m away from it. The string is deflected 5° from the vertical. Find the tension in the string.

What are the mole fractions of hydrochloric acid (HCI) and water in a 20% (w/w) aqeous HCl solution?

3. A small sphere of charge +6 x 10-⁶C is suspended by a string of negligible mass. A charge of -9 x 10^-6 C is placed directly to the right of the sphere and 0.22m away from it. The string is deflected 5° from the vertical. Find the tension in the string.

Which of the following activities would lead to the creation of magnetic fields?

a. Placing a proton in an environment where it is completely at rest

b. Placing the nucleus of an atom in an environment where it is

moving at constant velocity

c. Placing the nucleus of an atom in an environment where it has

zero acceleration and a zero velocity d. Placing a negative ion in an environment where it has a nonzero

acceleration that is constantly changing

e. Placing an electron in an environment where it is moving at 80 m/s around a circular path

Object A and Object B are charged with +37.2 u coulombs and -68.1 μ coulombs, respectively Given Chat the wo objects are separated by 0.37 m. Which of the following statements is/are valid?

a. Object A attracts object B with a force of 20.5 N

b. Object 8 repels object A with a force of 166.4 N

c. Object A repels object B with a force of 166.4 N d. Object B attracts object A with a force of 166.4 N

e. Object B attracts object A with a force of 2015 N

f. Object A repels object 8 with a force of 20.5 N

g. Object B repels object A with a force of 20.5 N

HObject A attracts object 8 with a force of 166.4 N

Which of the following activities would lead to the creation of magnetic fields?

a. Placing a positive ion in an environment where it has zero acceleration and a zero velocity

b. Placing a proton in an environment where it is moving at 2 m/s in a straight line

c. Placing a positive ion in an environment where it is completely at rest d. Placing the nucleus of an atom in an environment where it has zero acceleration and a nonzero velocity

e. Placing an electron in an environment where it has a nonzero acceleration that is constantly changing

Which of the following activities would lead to the creation of independent magnetic fields (ie. One that does not depend on any electric field in its proximity) ?

a. Placing a proton in an environment where its velocity constantly changing

b. Placing a positive ion in an environment where it is moving at 8

m/s around a circular path

c. Placing a negative ion in an environment where it is moving at

constant velocity d. Placing an electron in an environment where it has zero

acceleration and a zero velocity

e. Placing an electron in an environment where it is completely at

rest

Object A and Object B are charged with +47.4 μ coulombs and +16.3 μ coulombs, respectively. Given that the two objects are separated by 0.64 m, Which of the following statements is/are valid?

a. Object A attracts object B with a force of 27.1 N

b. Object A repels object B with a force of 17:0N

c. Object B attracts object A with a force of 27.1N

d. Object A attracts object B with a force of 118.7 N

e. Object 8 repeli object A with a force of 120 N

1. Object Battracts object A with a force of 118.7 N

Object 8 repels object A with a force of 433 N

n Object A repels object 8 with a force of 43. N