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
Sunny_sXe [5.5K]
3 years ago
7

Assume that a uniform magnetic field is directed into thispage. If an electron is released with an initial velocity directedfrom

the bottom edge to the top edge of the page, which of thefollowing describes the direction of the resultant force acting onthe electron?
A. out of the page
B. to the right
C. to the left
D. into the page
Physics
1 answer:
Feliz [49]3 years ago
7 0

Answer:

B). to the right

Explanation:

Since the direction of magnetic field is into the page

So here we know that

B = B_o(-\hat k)

now the velocity is from bottom to top

so we have

v = v_o \hat j

now the force on the moving charge is given as

\vec F = q(\vec v \times \vec B)

now we have

\vec F = (-e)(v_o \hat j \times B_o(-\hat k))

\vec F = e v_o B \hat i

so force will be towards Right

You might be interested in
How did the Planck mission help scientists learn about the age of the universe
forsale [732]

Answer:

By using observations from the Atacama Cosmology Telescope (ACT) in Chile, the new findings match the measurements of the Planck satellite data of the same ancient light.

Explanation:

3 0
2 years ago
A continental tropical air mass is _______ and _______.
Masteriza [31]
A continental tropical air mass is dry and hot. It is formed over the land and in hot tropical areas. Summer months are when this kind of warm air mass is most noticeable and it can stay for a lengthy period of time.
6 0
3 years ago
A xenon arc lamp is covered with an interference filter that only transmits light of 400-nm wavelength. When the transmitted lig
zepelin [54]

Answer:

3. both are true.

Explanation:

Energy increses with decrease in wavelenght.

For photoemission to occur, a threshold energy barrier must be broken.

Higher energy means more electrons will be emmited.

The electrons emmited will posses energy that is less than the incident energy by the value of the threshold energy.

So the higher the energy, the higher the energy possessed by the electrons.

4 0
3 years ago
Read 2 more answers
An experiment is performed to test the effect of three different types of water on the growth of a plant. The test is done by us
natima [27]
I think the correct answer would be D. The tap water in the experiment is one the three test conditions of the independent variable, the type of water. The independent variable in a experiment is the one being manipulated or the one being changed. In this case, it is the type of water.
6 0
3 years ago
Read 2 more answers
A recent home energy bill indicates that a household used 475475 kWh (kilowatt‑hour) of electrical energy and 135135 therms for
faltersainse [42]

Answer:

Explanation:

Given that,.

A house hold power consumption is

475 KWh

Gas used is

135 thermal gas for month

Given that, 1 thermal = 29.3 KWh

Then,

135 thermal = 135 × 29.3 = 3955.5 KWh

So, total power used is

P = 475 + 3955.5

P =4430.5 KWh

Since 1 hr = 3600 seconds

So, the energy consumed for 1hr is

1KW = 1000W

P = energy / time

Energy = Power × time

E = 4430.5 KWhr × 1000W / KW × 3600s / hr

E = 1.595 × 10^10 J

So, using Albert Einstein relativity equation

E = mc²

m = E / c²

c is speed of light = 3 × 10^8 m/s

m = 1.595 × 10^10 / (3 × 10^8)²

m = 1.77 × 10^-7 kg

Then,

1 kg = 10^6 mg

m = 1.77 × 10^-7 kg × 10^6 mg / kg

m = 0.177mg

m ≈ 0.18 mg

5 0
3 years ago
Other questions:
  • A hot air balloon has just lifted off and is rising at the constant rate of 1.60 m/s. suddenly, one of the passengers realizes s
    14·2 answers
  • Aray diagram is shown.<br> What does the letter red line represent?
    13·1 answer
  • a 20N mass is supported by two ropes. what is the tension in each rope? how woould i work this problem if i know the two angles
    8·1 answer
  • A football player kicks a ball with a mass of 0.42 kg. The average acceleration of the football was 14.8 m/s².
    15·2 answers
  • The energy content of food is conventionally measured in Calories rather than joules. One Calorie in nutrition is equal to 4184
    11·1 answer
  • What is a crystalline solid?​
    7·1 answer
  • Which of the following types of lithospheric crusts collide to produce large mountains such as the Himalayan mountains?
    8·1 answer
  • 3. Which of the following objects can be used to complete this broken electric circuit and make the light bulb glow?
    11·1 answer
  • I need help with number 2 pls it’s a quiz grade
    5·1 answer
  • in the bohr model, which energy transition will result in light being emitted with shortest wavelength?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!