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
andrew-mc [135]
3 years ago
15

A surveyor is using a magnetic compass 5.6 m below a power line in which there is a steady current of 140 A. (a) What is the mag

netic field in microteslas at the site of the compass due to the power line? (b) Will this field interfere seriously with the compass reading? The horizontal component of Earth’s magnetic field at the site is 20 µT.
Physics
1 answer:
ArbitrLikvidat [17]3 years ago
4 0

Answer:

(a) B = 5.6 micro Tesla

Explanation:

Current in the wire, i = 140 A

distance, r = 5 m

The formula for the magnetic field at a distance r due to the current carrying wire

B=\frac{\mu _{0}}{4\pi }\times \frac{2i}{r}

B=10^{-7}\times \frac{2\times140}{5}

B = 5.6 x 10^-6 Tesla

B = 5.6 micro Tesla

(b) As the magnetic field of earth at this site is 20 micro tesla so the magnetic field due to current carrying wire interfere the magnetic compass.

You might be interested in
Iron ball sinks in water but not in mercury. Why?
Zigmanuir [339]

Answer:

mercury is more dense

Explanation:

8 0
3 years ago
Read 2 more answers
An arrow is shot vertically upward at a rate of 250ft/s. Use the projectile formula h=−16t2+v0t to determine at what time(s), in
SIZIF [17.4K]

Answer:

The arrow is at a height of 500 feet at time t = 2.35 seconds.

Explanation:

It is given that,

An arrow is shot vertically upward at a rate of 250 ft/s, v₀ = 250 ft/s

The projectile formula is given by :

h=-16t^2+v_ot

We need to find the time(s), in seconds, the arrow is at a height of 500 ft. So,

-16t^2+250t=500

On solving the above quadratic equation, we get the value of t as, t = 2.35 seconds

So, the arrow is at a height of 500 feet at time t = 2.35 seconds. Hence, this is the required solution.

6 0
4 years ago
Read 2 more answers
Several light bulbs, each of resistance 1.5 Ω, are connected in a series across a 120 V source of emf. If the current through th
Leni [432]
<h3><u>Answer;</u></h3>

40 light bulbs

<h3><u>Explanation</u>;</h3>

The total resistance of components or bulbs in series is given as the sum of resistance of all the components.

Thus; if there are bulbs in series each with a resistance of 1.5 Ω, the the total resistance will be; 1.5nΩ

From the ohms law;

V = IR , where V is the voltage, I is the current and R is the resistor.

Thus; R = V/i

         R = 120/2

            = 60 Ω

But, there are n bulbs each with 1.5 Ω; thus there are;

n = 60/1.5

<u>  = 40 Bulbs </u>

7 0
3 years ago
Our sun is unusual because it does not belong to a(n) ____
lesantik [10]
The answer is binary star system
5 0
3 years ago
Read 2 more answers
I'll give brainiest. <br> Approximate how many times greater Saturn's mass is than Mercury's.
Vsevolod [243]

Mass of the saturn = 5.683 × 10^26 Mass of the mercury = 3.285 × 10^23

4 0
3 years ago
Read 2 more answers
Other questions:
  • Samuel is running in a parks nature trail.at first checkpoint he ran 925 m in 10 minutes.at second checkpoint he slowed down and
    10·1 answer
  • An electric field exerts an electrostatic force of magnitude 1.5 x 10-14 newton on an electron within the field. what is the mag
    11·1 answer
  • Which of the following is a CHEMICAL factor affecting marine biomes?
    13·1 answer
  • Which of the following pieces of laboratory equipment is not directly used to make measurements
    12·2 answers
  • Which of the following choices correctly identifies the process created by moving a magnet through a conducting loop?
    10·1 answer
  • WILL MARK BRAINLIEST
    11·1 answer
  • Diagram of an atom with labels
    9·1 answer
  • Whoever get this right gets free cookies. best deal. ( BASIC PHYSICS QUESTION )
    14·1 answer
  • 7. How much time does it take a person to walk 8
    13·1 answer
  • the asthenosphere is an important layer because it . 5) a) responds to forces by flowing as it is relatively strong b) responds
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!