1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Artyom0805 [142]
3 years ago
12

An electron is to be accelerated in a uniform electric field having a strength of 2.00 × 106 V/m. (a) What energy in keV is give

n to the electron if it is accelerated through 0.400 m? (b) Over what distance would it have to be accelerated to increase its energy by 50.0 GeV?
Physics
2 answers:
vladimir1956 [14]3 years ago
7 0

Answer:

a) 800 keV

b)  24.996 km.

Explanation:

(a) we have

\large \Delta K.E=q\Delta V  .............(1)

where,

\large \Delta K.E = Change in kinetic energy

q = charge of an electron

\Delta V = Potential difference

also

\large E=\frac{V}{d}       .......(2)

E = electric field

d = distance traveled

Now from (1) and (2) we have,

\large \Delta K. E=qV=qEd

substituting the values in the above equation, we get

\large \Delta K. E=(1.6\times 10^{-19}C)(2\times 10^6V/m)(0.400m)(\frac{1eV}{1.6\times 10^{-19}J})(\frac{1keV}{1000eV})

\large \Delta K. E=800keV

Thus, the energy gained by the electron is <u>800 keV</u> if it is accelerated over a distance of 0.400 m.

(b) Using the equation (1), we have

\large d=\frac{\Delta K.E}{qE}

\large d=\frac{(50\times 10^9eV)}{(1.6\times 10^{-19C})(2\times 10^6V/m)}(\frac{1.6\times 10^{-19}J}{1eV})

or

\large d=2.4996\times 10^4m

or

\large d=24.996\times 10^3m=24.996km

Thus, to gain 50.0 GeV of energy the electron must be accelerated over a distance of<u> 24.996 km.</u>

ohaa [14]3 years ago
5 0

Answer:

a) 800 keV

b) 25 km

Explanation:

Strength\ of\ Electric\ field=2\times 10^6\ V/m\\a)\ Potential\ Difference=Strength\ of\ Electric\ field\times Distance\\\Rightarrow Potential\ Difference=Kinetic\ Energy\ =2\times 10^6\times 0.4\\\therefore Energy=0.8\times 10^6\ eV=800\ keV\\

b)\ Potential\ difference=50\ GeV=50\times 10^9\ eV\\Distance=\frac{Potential\ difference}{electric\ field}\\\Rightarrow Distance=\frac{50\times 10^9}{2\times 10^6}\\\Rightarrow Distance=25\times 10^3\ m\\\therefore Distance=25\ km

You might be interested in
Which ion channels mediate the falling phase of an action potontial?
White raven [17]

Answer:

Voltage-gated K+ channels

4 0
3 years ago
The value of acceleration due to gravity (g) on Pluto is about . 0.61 meters/second2. How much will an object that weighs 250 ne
Annette [7]
First, determine the mass of the object by dividing its weight on Earth by 9.8 m/s² as shown below,
                                   m = 250 N / 9.8 m/s² = 25.51 kg
Then, multiply the obtained mass by the acceleration due to gravity (g) on Pluto. 
                                  W (in Pluto) = (25.51 kg) x (0.61 m/s²)  = 15.56 N
Therefore, the object will only weigh 15.56 N. 
8 0
3 years ago
A man has a mass of 85kg, what is his weight
Ostrovityanka [42]
The answer is he weighs 187.39 LBS/Pounds
5 0
3 years ago
Read 2 more answers
Achilles and the tortoise are having a race. The tortoise can run 1 mile (or whatever the Hellenic equivalent of this would be)
fenix001 [56]

Answer:

Surely Achilles will catch the Tortoise, in 400 seconds

Explanation:

The problem itself reduces the interval of time many times, almost reaching zero. However, if we assume the interval constant, then it is clear that in two hours Achilles already has surpassed the Tortoise (20 miles while the Tortoise only 3).

To calculate the time, we use kinematic expression for constant speed:

x_{final}=x_{initial}+t_{tor}v_{tor}=1+t_{tor}\\x_{final}=x_{initial}+t_{ach}v_{ach}=10t_{ach}

The moment that Achilles catch the tortoise is found by setting the same final position for both (and same time as well, since both start at the same time):

1+t=10t\\t=1/9 hour=0.11 hours

7 0
3 years ago
Can someone answer this for me? it’s due today and i need it done asap! i will give brainlist!!
Setler79 [48]

Answer:

1. The sound waves are longitudinal because particles of the medium through which the sound is transported vibrate parallel to the direction that the sound wave moves.

2. A pulse or a wave is introduced into a slinky when a person holds the first coil and gives it a back-and-forth motion. This creates a disturbance within the medium; this disturbance subsequently travels from coil to coil, transporting energy as it moves.  

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • Give reason 1.electromagnets are temporary magnets ?
    13·1 answer
  • A string is attached to a vibrating machine that has a frequency of 120 Hz. The other end of the string is passed over a pulley
    6·1 answer
  • How does a merry go round use potential and kinetic energy
    7·1 answer
  • Does the size of a paper airplane affect how far it flies
    8·1 answer
  • What type of objects cannot pull to magmets
    7·2 answers
  • what is the pressure from made from a book with the dimensions of 47 cm *86 cm and a measured force of 900N?
    12·1 answer
  • What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d
    11·1 answer
  • If it takes a force of 20n to stretch a spring 0.1 meter how much energy does the spring have?​
    6·1 answer
  • An airplane flying at 116 m/s. E, is accelerated uniformly at the rate of 9.2 m/s2, E, for 13 s. What is its final velocity in m
    7·1 answer
  • Based on Newton's 3rd law, the force pairs always act on what?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!