I’ve looked though the text book and looked it up but I dunno the answer

Electrons in a particle beam each have a kinetic energy of 4.0 × 10−17 J. What is the magnitude of the electric field that will

denpristay [2]

Explanation:

Relation between work and change in kinetic energy is as follows.

$W_{net} = \Delta K$

Also, $\Delta K = K_{initial} - K_{final}$

= $(0 - 4.0 \times 10^{-17})$ J

= $-4.0 \times 10^{-17}$ J

Let us assume that electric force on the electron has a magnitude F. The electron moves at a distance of 0.3 m opposite to the direction of the force so that work done is as follows.

w = -Fd

$-4.0 \times 10^{-17} J = -F \times 0.3 m$

F = $1.33 \times 10^{-16}$

Therefore, relation between electric field and force is as follows.

E = $\frac{F}{q}$

= $\frac{1.33 \times 10^{-16}}{1.60 \times 10^{-19} C}$

= $0.831 \times 10^{3}$ C

Thus, we can conclude that magnitude of the electric field that will stop these electrons in a distance of 0.3 m is $0.831 \times 10^{3}$ C.

3 0

3 years ago

While the Earth is revolving around the sun, less direct sunlight is reaching the Northern Hemisphere than the Southern Hemisphe

Kisachek [45]

Answer:

During the northern hemisphere winter solstice, the Sun's incoming rays are perpendicular to the Tropic of Capricorn at 23.5 degrees south latitude.

Explanation:

Spring begins

4 0

3 years ago

Sally accelerates a 250 kg cart at 3 m/s/s. What must be the net force?

Vlad1618 [11]

750 N is what I got...

7 0

3 years ago

Which device transforms electrical energy to mechanical energy

Nonamiya [84]

Examples of devices that convert electrical energy into mechanical energy — in other words, devices that use electrical energy to move something — include:

the motor in today’s standard power drills
the motor in today’s standard power saws
the motor in an electric tooth brushes
the engine of an electric car
the motor in a fan
the motor in a remote control cars that runs on batteries. So your answer would be B. Motorsport

5 0

3 years ago

Read 2 more answers

Which law states that volume increases with temperature

RSB [31]

Boyle’s Law states that volume increases with temperature

5 0

3 years ago