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
Ulleksa [173]
2 years ago
10

In the rainy season, the Amazon flows fast and runs deep. In one location, the river is 22 m deep and moves at a speed of 4.4 m/

s toward the east. The earth's 50 μT magnetic field is parallel to the ground and directed northward. If the bottom of the river is at 0V, what is the potential (magnitude and sign) at the surface?
Physics
2 answers:
andreev551 [17]2 years ago
8 0

Given Information:  

depth = L = 22 m

Speed = v = 4.4 m/s

Magnetic field = B = 50 μT

Required Information:  

Potential difference = E = ?

Answer:

Potential difference = 4.84 mV

Explanation:

The potential difference can be found using

E = BvL

Where v is the speed of flowing river, B is the magnetic field and  L is the depth of river .

E = 50x10⁻⁶*4.4*22

E = 0.00484 V

or

E = 4.84 mV

The direction of current can found using right hand rule, thumb upward indicating force, forefinger indicating magnetic field and curled fingers indicating current.

Since the potential at bottom of the river is 0V then the potential at top of the surface would be +4.84 mV.

Anna35 [415]2 years ago
5 0

Answer:

V = 4.84×10-³V

Explanation:

V = E×d

E = Bv

Given

B = 50μT = 50×10-⁶T = magnetic field

v = 4.4m/s = speed

E = Bv = 50×10-⁶×4.4 = Electric field strength

E = 2.2×10-⁴ V/m

d = 22m = distance or separation

V = Ed =2.2×10-⁴ × 22

V = 4.84×10-³V = potential

You might be interested in
An object is moving along the x axis. At t = 5.6 s, the object is at x = +3.0 m and has a velocity of +5.7 m/s. At t = 8.5 s, it
Debora [2.8K]

The average acceleration between t = 5.6 s and t = 8.5 s is 2.31  m/s²

<h3>What is acceleration?</h3>

Acceleration is defined as the rate change of velocity with time.

acceleration a = (Δv) / (Δt)

An object is moving with initial velocity u =5.7 m/s and its final velocity v= -1.0 m/s.

Time taken for the change in speed, t= 8.5 - 5.6 = 2.9 seconds

The acceleration is given by

a = (-1 - 5.7)/ 2.9

a = -  2.31 m/s²

|a | = 2.31 m/s²

Thus, the object's acceleration is 2.31 m/s²

Learn more about acceleration.

brainly.com/question/12550364

#SPJ1

3 0
2 years ago
The type of specialized cell whose main function is to communicate between neurons is a(n):
WITCHER [35]

Answer:

a

Explanation:

The type of specialized cell whose main function is to communicate between neurons is a(n) interneuron

4 0
2 years ago
4. Using the bone density of 2.0 kg/m3, calculate the mass of an adult femur bone that has a volume of 0.00027 m3.
kolbaska11 [484]

Answer:

\boxed{\sf Mass \ of \ an \ adult \ femur \ bone = 0.00054 \ kg}

Given:

Bone density = 2.0 kg/m³

Volume of bone (V) = 0.00027 m³

To Find:

Mass of an adult femur bone (m).

Explanation:

\sf \implies Density = \frac{Mass (m)}{Volume (V)} \\ \\ \sf \implies \frac{Mass}{Volume} = Density \\ \\ \sf \implies Mass = Density \times Volume \\ \\ \sf \implies Mass = 2.0 \ kg/ \cancel{m^{3}} \times 0.00027 \ \cancel{m^{3}} \\ \\ \sf \implies Mass = 0.00054 \ kg

6 0
3 years ago
The flow of electrons through a wire or any conductor is called____.
Karo-lina-s [1.5K]
Electricity. Ruler. 69. N.
5 0
2 years ago
PLEASE HELP ME ASAP PLEASEEEEE
AleksAgata [21]
I believe its the law of inertia
6 0
3 years ago
Other questions:
  • How much heat is released when 35kg of water freezes?
    15·1 answer
  • Suppose we have three hypothetical atomic nuclei: A, B, and C. Nucleus A has 7 protons and 7 neutrons. Nucleus B has 5 protons a
    11·1 answer
  • Which of the following statements are true regarding transformers?Check all that apply.
    9·2 answers
  • There are slightly more than one hundred elements known to exist. The smallest complete unit of an element that serves as the ba
    13·1 answer
  • A tank is 10 m long, 6 m wide, 3 m high, and contains kerosene with density 820 kg/m3 to a depth of 2.5 m. (Use 9.8 m/s2 for the
    12·2 answers
  • A 0.12-kg softball is moving at 6 m/s when it is hit by a bat, causing it to reverse direction and have a speed of 14 m/s. what
    7·1 answer
  • Help asap please!!!!​
    12·1 answer
  • How to calculate the average value of the indirect measurements of KE
    6·1 answer
  • I need help with those 2.
    10·1 answer
  • A hooligan throws a stone vertically down with an initial speed of 17 m/s from the roof of a building 51 metres above the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!