# physics

Can anyone please help me with this? : An electron of mass 9.11 x 10^-31 kg is accelerated by a constant force along the direction of its motion from 2 x 106 m/s to 8 x 106 m/s within 2.00 cm. What is the magnitude of the force?

1. 👍
2. 👎
3. 👁
1. vf^2=vi^2+2ad where acceleration a is = force/mass

(8e6)^2=(2e6)^2+force*.02/9.11e-31
solve for force

1. 👍
2. 👎
👤
bobpursley

## Similar Questions

1. ### science

Which option is an example of an automatic regulatory reaction? sweating*** taking in more calories burrowing underground wearing a jacket What is the correct order of events for cellular respiration? Krebs cycle → glycolysis

2. ### Physics

A 0.62-mm-diameter copper wire carries a tiny current of 2.0 μA . The molar mass of copper is 63.5 g/mole and its density is 8900 kg/m3. NA=6.02×1023 Estimate the electron drift velocity. Assume one free electron per atom.

3. ### Chemistry

My problem states the mass of the electron is 9.10939 x10-31kg. It wants me to express the mass of the electron to 1, 2, 3, and 4 significant figures. I don't need just the answer but an explaination on how to arrive at the

4. ### Physics

An electron with a mass of 9.11 *10^31 Kg is accelerated from rest across a set if parallel plates that have a potential difference of 150 v and are separated by 0.80 cm A) determine the kinetic energy of the electron after it

1. ### Chemistry

An electron moves with a velocity of 2.5 x 10^8 cm/s. What is its wavelength? (The mass of an electron is 9.109 x 10^-28 g.)

2. ### physics

An electron is accelerated from rest through a potential difference that has a magnitude of 2.90 × 107 V. The mass of the electron is 9.11 × 10-31 kg, and the negative charge of the electron has a magnitude of 1.60 × 10-19 C.

3. ### Physics

The mass of an electron is 9.109×10−31 kg, and the magnitude of the charge of an electron is 1.602×10−19 C. What is the ratio of the gravitational force to the electrostatic force between two electrons? 3.093×10^22

4. ### Chemistry

The mass of an electron is 9.11 x 10^-31 kg. What is the uncertainty in the position of an electron moving at 2.00 x 10^6 m/a with an uncertainty of trianglev=0.01x10^6 m/s?

1. ### physics

Electronic types neglect the force of gravity on electrons.To see why, compute the force of Earth's gravity on an electron and compare it with the force exerted on the electron by an electric field of magnitude 6000 V/m (a

2. ### physics

An electron of mass 9.11 10-31 kg has an initial speed of 3.00 105 m/s. It travels in a straight line, and its speed increases to 8.00 105 m/s in a distance of 10.0 cm. (a) Assuming its acceleration is constant, determine the

3. ### physics

An electron ( mass = 9.11×10−31 kg) leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, which is 1.85 cm away. It reaches the grid with a speed of 2.95×10^6 m/s

4. ### Chemistry

the de broglie wavelength of an electron with a velocity of 6.00 x 10^6 m/s is ____m. the mass of the electron is 9.11 x 10^-28g.