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
siniylev [52]
3 years ago
15

An electron is accelerated through 2400 V from rest and then enters a region in which there is a uniform 1.70 T magnetic field.

What are (a) the maximum and (b) the minimum magnitudes for the magnetic force this charge can experience
Physics
1 answer:
aalyn [17]3 years ago
5 0

Answer:

Explanation:

Let v be the velocity acquired by electron in electric field

V q = 1/2 m v²

V is potential difference applied on charge q , m is mass of charge , v is velocity acquired

2400 x 1.6 x 10⁻¹⁹ = .5 x 9.1 x 10⁻³¹ x v²

v² = 844 x 10¹²

v = 29.05 x 10⁶ m /s

Maximum force will be exerted on moving electron when it moves perpendicular to magnetic field .

Maximum force = Bqv , where B is magnetic field , q is charge on electron and v is velocity of electron

= 1.7 x 1.6 x 10⁻¹⁹ x 29.05 x 10⁶

= 79.02 x 10⁻¹³ N .

Minimum force will be zero when electron moves along the direction of magnetic field .

You might be interested in
A particle moves along a straight line. Its position at any instant is given by x = 32t− 38t^3/3 where x is in metre and t in se
Rudik [331]

Answer:

The acceleration of the object is -69.78 m/s²

Explanation:

Given;

postion of the particle:

x = 32t - 38\frac{t^3}{3} \\\\

The velocity of the particle is calculated as the change in the position of the  particle with time;

v = \frac{dx}{dt} = 32 - 38t^2\\\\when \ the \ particle \ is \ at \ rest, \ v = 0\\\\32-38t^2 = 0\\\\38t^2 = 32\\\\t^2 = \frac{32}{38} \\\\t = \sqrt{\frac{32}{38} } \\\\t = 0.918 \ s

Acceleration is the change in velocity with time;

a = \frac{dv}{dt} = -76t\\\\recall , \ t = 0.918 \ s\\\\a = -76(0.918)\\\\a = -69.78 \ m/s^2

4 0
2 years ago
Energy energy can be transferred from one form to another we use many Indrajeet Converse in our daily life observe carefully to
aleksandr82 [10.1K]

Answer:

Find the list below.

Explanation:

Energy conversion imply the transformation of energy from one form to another. Examples of these conversions in my home include the following:

1. Chemical energy stored in food is converted to mechanical energy used in working(example sweeping)

2. Chemical energy stored in batteries are used to produce sound energy from the radio.

3. Electrical energy flowing through the wires are used to provide heat energy from the heating device.

4. Electric energy stored in the fan is converted to kinetic energy.

5. Chemical energy stored in petrol is converted to mechanical and electrical energies in the generator.

6. Electric energy supplied by the electric gas cooker is used to generate thermal energy after heating water.

7. Electrical energy flowing through the wires supply light energy in the bulbs.

8. Electric energy is converted to light and sound energy in the televisions.

9. Light energy from the sun is converted to chemical energy in the plants at the garden.

10. Electric energy is converted to sound and light energy in the kitchen blender.

3 0
3 years ago
7–¹ plsss pa answer mga lods​
Rasek [7]
Amigo no se lo que ablas
3 0
3 years ago
A solid-propellant rocket has chamber pressure of 6.35 atm with propellant density of 3.8 g/cm3 and burn area of 975 cm2 . Find
cupoosta [38]

Answer:

Explanation:

Given:

P = 6.35 atm

= 1.01 × 10^5 × 6.35

= 6.434 × 10^5 N/m^2

As = 975 cm^2

D = 3.8 g/cm^2

M = 320 kg

Since the propellant volume is equal to the cross sectional area, As times the fuel length, the volumetric propellant consumption rate is the cross section area times the linear burn rate, bs , and the instantaneous mass flow rate of combustion, ms gases generated is equal to the volumetric rate times the fuel density, D

ms = D × As × bs

ms ÷ bs = M/L

M/L = 3.8 × 975

= 3705 g/cm

= 3.705 × 10^6 kg/m^3

Pressure = mass × g/area

= mass/length × time^2

t = sqrt(3.705 × 10^6/6.43 × 10^5)

= 2.4 s

4 0
3 years ago
Through what potential difference must electrons be accelerated so that they will exhibit wave nature in passing through a pinho
Mila [183]

Answer:

0.15 mV

Explanation:

In order to exhibit wave nature, the de Broglie wavelength of the electron must be of the same size of the diameter of the pinhole, therefore:

\lambda=0.10 \mu m = 1.0\cdot 10^{-7} m

The de Broglie wavelength of an electron is

\lambda = \frac{h}{mv}

where

h=6.63\cdot 10^{-34} Js is the Planck constant

m=9.11\cdot 10^{-31} kg is the mass of the electron

v is the electron's speed

Therefore, the electron's speed must be

v=\frac{h}{m\lambda}=\frac{6.63\cdot 10^{-34}}{(9.11\cdot 10^{-31})(1.0\cdot 10^{-7})}=7278 m/s

When accelerated through a potential difference \Delta V, the kinetic energy gained by the electron is equal to the change in electric potential energy, therefore

e\Delta V = \frac{1}{2}mv^2

where

e=1.6\cdot 10^{-19} is the magnitude of the charge of the electron

So, we can find the potential difference needed:

\Delta V=\frac{mv^2}{2e}=\frac{(9.11\cdot 10^{-31})(7278)^2}{2(1.6\cdot 10^{-19})}=1.5\cdot 10^{-4}V = 0.15 mV

5 0
3 years ago
Other questions:
  • Which statement is true for a sound wave entering an area of warmer air
    13·2 answers
  • What is the relative humidity when the dry-bulb temperature is 16°c and the wet-bulb temperature is 14°c?
    13·1 answer
  • Which type of plate boundary is most closely associated with the formation of new ocean floor?
    11·1 answer
  • Que formas de energía utilizas habitualmente?
    9·1 answer
  • What hormone is not related to stress
    7·1 answer
  • Solar-powered cars use energy from the Sun to work. A panel on the car absorbs light energy from the Sun, which then generates a
    11·2 answers
  • “What is the relationship between wavelength and frequency?”
    13·1 answer
  • A 98 N ball is suspended from a cable so that it hangs 3.5 m above the earth. Find the mass of the ball and the
    6·1 answer
  • 6+8t+3t²=0<br> find time​
    11·1 answer
  • If a player through a basketball to the target with an initial velocity of 17 m/s making an angle of 30 degrees with the horizon
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!