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
evablogger [386]
3 years ago
7

A proton is traveling horizontally to the right at 4.60×106 m/s . Part A Find (a)the magnitude and (b) direction of the weakest

electric field that can bring the proton uniformly to rest over a distance of 3.50 cm . Part C How much time does it take the proton to stop after entering the field? Part D What minimum field ((a)magnitude and (b)direction) would be needed to stop an electron under the conditions of part (a)?
Physics
1 answer:
Feliz [49]3 years ago
3 0

Answer:

Explanation:

u = 4.6 x 10^6 m/s

Let E be the electric field

s = 3.5 cm = 0.035 m

v = 0

a = qE / m

So use third equation of motion

v^2 = u^2 - 2 a s

0 = (4.6 x 10^6)^2  - 2 x q E / m x 0.035

21.16 x 10^12 = 2 x 1.6 x 10^-19 x E / (1.67 x 10^-27 x 0.035)

E = 3865 N/C

(a) The magnitude of electric field is 3865 N/C

(b) the direction of electric field is opposite to the direction of motion of proton, i.e., towards left.

(c) Let t be the time taken

v = u + a t

0 = 4.6 x 10^6 - (1.6 x 10^-19 x 3865) t / (1.67 x 10^-27)

t  = 1.24 x 10^-5 sec

(d) For electron, the direction of electric field is same the direction of electron, i.e., rightwards.

Use third equation of motion

v^2 = u^2 - 2 a s

0 = (4.6 x 10^6)^2  - 2 x q E / m x 0.035

21.16 x 10^12 = 2 x 1.6 x 10^-19 x E / (9.1 x 10^-31 x 0.035)

E = 2.1 N/C

You might be interested in
All of the following are shaped by learned behavior except __________. A. shyness B. blinking C. biting one’s nails D. angry res
Dvinal [7]
Blinking, that’s an involuntary behavior
7 0
3 years ago
Read 2 more answers
1) Si un mango cae a una velocidad de 75m/s y tarda 26 seg. en caer. ¿ Cuál habrá sido la velocidad con qué el mango llegó al su
Lyrx [107]

Answer:

El mango llega al suelo a una velocidad de 329.982 metros por segundo.

Explanation:

El mango experimenta un movimiento de caída libre, es decir, un movimiento uniformemente acelerado debido a la gravedad terrestre, despreciando los efectos de la viscosidad del aire y la rotación planetaria. Entonces, la velocidad final del mango, es decir, la velocidad con la que llega al suelo, se puede determinar mediante la siguiente fórmula cinemática:

v = v_{o}+g\cdot t (1)

Donde:

v_{o} - Velocidad inicial, en metros por segundo.

v - Velocidad final, en metros por segundo.

g - Aceleración gravitacional, en metros por segundo al cuadrado.

t - Tiempo, en segundos.

Si sabemos que v_{o} = -75\,\frac{m}{s}, g = -9.807\,\frac{m}{s^{2}} y t = 26\,s, entonces la velocidad final del mango es:

v = v_{o}+g\cdot t

v = -75\,\frac{m}{s}+\left(-9.807\,\frac{m}{s} \right)\cdot (26\,s)

v = -329.982\,\frac{m}{s}

El mango llega al suelo a una velocidad de 329.982 metros por segundo.

8 0
2 years ago
Two pulses are moving along a string one pulse is moving to the right and the second is moving to the left. Both pulses reach po
MatroZZZ [7]

Answer:

Constructive interference

Explanation:

- This is an example of a standing wave produced when two ends of a string are oscillated in the same plane. The displacement of of point on two ends oscillates vertically.

- We are given that two pulses move along the string each coming towards each other and meet at a common point ( P ).

- Each pulse have their own magnitude or displacement in the vertical plane. If the pulses are to meet at a common point at the same instant, then they interfere with each other constructively.

- Where constructive interference of two pulses is the addition of magnitudes of induvidual pulses and form a single puls of the constructed magnitude.

    magnitude ( New pulse ) = magnitude (Pulse 1) + magnitude (Pulse 2)

6 0
3 years ago
Read 2 more answers
A child bounces a 48 g superball on the sidewalk. the velocity change of the superball is from 26 m/s downward to 17 m/s upward.
Nataly_w [17]
By definition we have the momentum is:
 P = m * v
 Where,
 m = mass
 v = speed
 Before the impact:
 P1 = (0.048) * (26) = 1.248 kg * m / s
 After the impact:
 P2 = (0.048) * (- 17) = -0.816 Kg * m / s.
 Then we have that deltaP is:
 deltaP = P2-P1
 deltaP = (- 0.816) - (1,248)
 deltaP = -2,064 kg * m / s.
 Then, by definition:
 deltaP = F * delta t
 Clearing F:
 F = (deltaP) / (delta t)
 Substituting the values
 F = (- 2.064) / (1/800) = - 1651.2N
 answer:
 the magnitude of the average force exerted on the superball by the sidewalk is 1651.2N
3 0
3 years ago
Current passes through a solution of sodium chloride. In 1.00 s, 2.68×1016Na+ ions arrive at the negative electrode and 3.92×101
Tanzania [10]

Explanation:

Given that,

Number of sodium ions at the negative electrode, Na^+=2.68\times 10^{16}

Number of chloride ions at the positive electrode, Cl^-=3.92\times 10^{16}

(a) The current flowing in the circuit is due to the positive as well as negative charges such that total charge becomes:

Q=(Na^++Cl^-)e

Q=(2.68\times 10^{16}+3.92\times 10^{16})(1.6\times 10^{-19})

Q = 0.01056 C

The current is given by :

I=\dfrac{Q}{t}

I=\dfrac{0.01056}{1}=10.56\ mA

So, the current passing between the electrodes is 10.56 mA.

(b) The direction of electric current is towards negative electrodes.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Air is compressed from 14.7 psia and 60°F to a pressure of 150 psia while being cooled at a rate of 10 Btu/lbm by circulating wa
    11·1 answer
  • Instead of moving back and forth, a conical pendulum moves in a circle at constant speed as its string traces out a cone (see fi
    14·1 answer
  • A simple machine that is a straight slanted surface is
    15·1 answer
  • A rocket is fired straight upward, starting from rest with an acceleration of 25.0 m/s^2. It runs out of fuel at the end of 4.00
    5·1 answer
  • The magnitude of the voltage induced in a conductor moving through a stationary magnetic field depends on the _______ and the __
    10·2 answers
  • Question 5 Multiple Choice Worth 3 points)
    12·1 answer
  • Explain why a law is accepted as fact, but a theory is not
    9·2 answers
  • Why is the sky blue?
    7·1 answer
  • 1. The spring in a trampoline has been stretched 0.25m and has a spring
    13·1 answer
  • What is Newton's Second Law?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!