# Physics

posted by .

The anode (positive terminal) of an X-ray tube is at a potential of +115 000 V with respect to the cathode (negative terminal).

(a) How much work (in joules) is done by the electric force when an electron is accelerated from the cathode to the anode?

(b) If the electron is initially at rest, what kinetic energy does the electron have when it arrives at the anode?

• Physics -

(a) multiply the voltage by the electron charge in Coulombs. The answer will be in Joules.

(b) same answer. All work done due to the potential energy change is converted to KE

• Physics -

78990-

## Similar Questions

1. ### physics

How much work is done to move 1.0 micro coloumb of charge from the negative terminal to the positive terminal of a 1.8V battery?
2. ### College physics

How much work is done to move 1.8C of charge from the negative terminal to the positive terminal of a 1.5V battery?
3. ### Physics

The anode (positive terminal) of an X-ray tube is at a potential of +105000 V with respect to the cathode (negative terminal). (a) How much work (in joules) is done by the electric force when an electron is accelerated from the cathode …
4. ### physics(electricity)

A 9V battery has an electric potential difference of 9V between the positive and negative terminals. How much kinetic energy in J would an electron gain if it moved from the negative terminal to the positive one?
5. ### elecTRICITY

A 9V battery has an electric potential difference of 9V between the positive and negative terminals. How much kinetic energy in J would an electron gain if it moved from the negative terminal to the positive one?
6. ### simple PHYSX!

A 9V battery has an electric potential difference of 9V between the positive and negative terminals. How much kinetic energy in J would an electron gain if it moved from the negative terminal to the positive one?
7. ### physics

i am confused with the concept when electrons flow from the negative terminal to the positive terminal of a battery then why the negative one is called lower potential and positive one higher potential while the difference in negative …
8. ### Physics

The anode (positive terminal) of an X-ray tube is at a potential of +125000 V with respect to the cathode (negative terminal). (a) How much work (in joules) is done by the electric force when an electron is accelerated from the cathode …
9. ### Chemistry

Draw a diagram to illustrate your explanation of how the charge of a single electron was determined. I'm suppose to draw a picture to show how they determined electrons were negative, but am unsure of what to draw for it. One of my …
10. ### Physics

An electron (m = 9 x 10-31 kg) leaves the cathode of a radio tube with zero initial velocity and travels in a straight line to the anode, which is 1 cm away. It reaches the anode with a velocity of 6 x 106 m s-1. If the force on the …

More Similar Questions