Physics, 27.03.2020 20:51 bsweeney3328

Older televisions display a picture using a device called a cathode ray tube, where electrons are emitted at high speed and collide with a phosphorescent surface, causing light to be emitted. The paths of the electrons are altered by magnetic fields. Consider one such electron that is emitted with an initial velocity of 2.10 107 m/s in the horizontal direction when magnetic forces deflect the electron with a vertically upward acceleration of 5.10 1015 m/s2. The phosphorescent screen is a horizontal distance of 5.5 cm away from the point where the electron is emitted.

(a) How much time does the electron take to travel from the emission point to the screen? s

(b) How far does the electron travel vertically before it hits the screen?

Answers: 3

Show answers

Another question on Physics

Physics, 22.06.2019 12:00

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

Answers: 1

Answer

Physics, 22.06.2019 13:00

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.

Answers: 1

Answer

Physics, 22.06.2019 14:00

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

Answers: 1

Answer

Physics, 22.06.2019 16:30

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.

Answers: 1

Answer

You know the right answer?

Older televisions display a picture using a device called a cathode ray tube, where electrons are em...

Questions