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
Andre45 [30]
3 years ago
6

After landing on an unexplored Klingon planet, Spock tests for the direction of the magnetic field by firing a beam of electrons

in various directions and by observing the following: Electrons moving upward feel a magnetic force in the NW direction; Electrons moving horizontally North are pushed down; Electrons moving horizontally South-East are pushed upward. He naturally concludes that the magnetic field at this landing site is in which direction?
Physics
1 answer:
BARSIC [14]3 years ago
3 0

Answer:

Magnetic field is in south west direction .

Explanation:

Let us represent various direction by  i , j, k . i representing east , j representing north and k representing vertically upward direction .

magnetic field is represented vectorially as follows

B = B₀ ( - i - j )

In the first case velocity of electron

v = v k

Force = q ( v x B )

= -e [ vk x B₀ ( - i - j ) ]

= evB₀ ( j -i )

Direction of force is north -west .

In the second case velocity of electron

v = vj

Force = -e [ vj x B₀ ( - i - j ) ]

= - evB₀ k

force is downward

In the third case, velocity of electron

v = v( -j +i )

Force = -e [ v( -j +i ) x B₀ ( - i - j ) ]

= 2 evB₀ k

Force is upward.

You might be interested in
Why is it important to practice a presentation?
-Dominant- [34]
Your answer should be D
let me know if I got it wrong
Hope this helped!
6 0
3 years ago
Read 2 more answers
) is it possible for one component of a vector to be zero, while the vector itself is not zero?
Natalka [10]
The least number of component of a vector quantity is two. These are the x-component and the y-component. 

The resultant vector, or vector as we refer to it in this item, can be calculated through the equation,
              RV = sqrt ((Vx)² + (Vy)²)

From the equation, it can be noted that if we let Vx equal to zero,
              RV = Vy

Similarly, if we let Vy be equal to zero then,
             RV = Vx

Thus, it is still possible for the vector to become nonzero even if one of its components is zero. 
8 0
3 years ago
With the same block-spring system from above, imagine doubling the displacement of the block to start the motion. By what factor
Fofino [41]

Answer:

A)     K / K₀ = 4   b)     v / v₀ = 4

Explanation:

A) For this exercise we can use the conservation of mechanical energy

in the problem it indicates that the displacement was doubled (x = 2xo)

starting point. At the position of maximum displacement

      Em₀ = Ke = ½ k (2x₀)²

final point. In the equilibrium position

      Em_{f} = K = ½ m v²

        Em₀ = Em_{f}

        ½ k 4 x₀² = K

        (½ K x₀²) = K₀

         K = 4 K₀

          K / K₀ = 4

B) the speed value

          ½ k 4 x₀² = ½ m v²

          v = 4 (k / m) x₀

if we call

           v₀ = k / m x₀

          v = 4 v₀

         v / v₀ = 4

3 0
3 years ago
A sailor pulls a crate across the deck of a ship with a rope, exerting a horizontal force of 150. N. The crate, which has a mass
nata0808 [166]

Answer:

B

Explanation:

7 0
3 years ago
The number of flowers on different breeds of bushes in a greenhouse is recorded every week for two months.
IceJOKER [234]

Is there a equation or something so I can do the math of how many flowers there are at the end of the two monthsm

6 0
3 years ago
Other questions:
  • Which of the following natural features is formed by weathering, erosion, and deposition?
    9·2 answers
  • What is the kinetic energy k of the two-car system immediately after the collision? express your answer in terms of ve, vn, and
    6·1 answer
  • A marathon runner completes a 42.188–km course in 2 h, 36 min, and 12 s. there is an uncertainty of 23 m in the distance travele
    15·1 answer
  • How would I answer this equation? E= mc^2 for m
    15·1 answer
  • PLZZ I WILL DO ANY THING
    13·1 answer
  • What is surface water or runoff?
    11·1 answer
  • De manera individual subraya la respuesta correcta: A) El Método Científico de la física experimental y su búsqueda de respuesta
    6·1 answer
  • Read the article Watering Livestock with Renewable Energy.
    8·2 answers
  • The Chair o
    11·1 answer
  • A ball with an initial velocity of 5 m/s rolls off a horizontal table with a height of 1.0
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!