![jahnoibenjamin](/avatars/45819.jpg)
jahnoibenjamin
10.03.2020 •
Mathematics
An adult brain is about 140 mm wide and divided into two sections (called "hemispheres" although the brain is not truly spherical), which are each about 70 mm wide. Model the current in one hemisphere as a circular current loop 65.0 mm in diameter. A sensor is placed so that it is along the axis of the loop, 2.10 cm from the center. Suppose a magnetic field of 4.15 fT is measured by the sensor. According to the model, what is the current I in the hemisphere of the brain being measured
Solved
Show answers
More tips
- B Business and Finance How to Open an Online Store? A Detailed Guide for Beginners...
- L Leisure and Entertainment What can be considered an antique: defining and valuing old objects...
- L Leisure and Entertainment Choosing the Right Books to Read: Tips and Recommendations...
- C Computers and Internet Step-by-Step Guide on How to Download Music to Your iPhone...
- H Health and Medicine Naskol ko Opasen Ukus Kleshcha i Kak Ego Raspoznat...
- F Family and Home How to Choose Suitable Windows for Your Home?...
- L Leisure and Entertainment What Movies You Should Watch: A Guideline to Make the Right Decision...
- L Leisure and Entertainment How to Identify a Song? Which Program Can Recognize a Song by Its Melody?...
- H Health and Medicine Coughing: Causes, Types, and Treatment Methods...
- F Family and Home Parquet or laminate, which is better?...
Answers on questions: Mathematics
- M Mathematics Please help me thanks!...
- M Mathematics What is the diameter of a circle if the circumference is 4?...
- M Mathematics X^2 + 6x = - 9 factor...
- M Mathematics 28.- 7.885 rounded to the nearest tenth...
- M Mathematics If a cylinder has a volume of approximately 125.6 cubic cm and has a heightof 10 cm, what is the length of the radius? *O 2 cmO 1 cm3 cm...
- M Mathematics PLEASE HELP ME THIS IS A MATTER OF PASS OR FAIL THE WHOLE GRADE I NEED HELP WITH MORE THAN ONE Chris types at an average speed of 45 words per minute. He has already...
- M Mathematics Paul s regular pay is $10.73 per hour. Overtime is calculated at 1.5 times the regular rate and double time at twice the regular rate. What are Paul s time-and-a-half...
- M Mathematics A dog’s normal body temperature is 101.5º F. A dog with pyometra (infection of the uterus) has a temperature of 106.2º F. How much higher is this than normal?...
- M Mathematics Answer for 17x+59=32x-46...
- M Mathematics Hehehehehhehehehhehehr...
Ответ:
3.61×10^5 A
Step-by-step explanation: Since the brain has been modeled as a current carrying loop, we use the formulae for the magnetic field on a current carrying loop to get the current on the hemisphere of the brain.
The formulae is given below as
B = u×Ia²/2(x²+a²)^3/2
Where B = strength of magnetic field on the axis of a circular loop = 4.15T
u = permeability of free space = 1.256×10^-6 mkg/s²A²
I = current on loop =?
a = radius of loop.
Radius of loop is gotten as shown... Radius = diameter /2, but diameter = 65mm hence radius = 32.5mm = 32.5×10^-3 m = 3.25×10^-2m
x = distance of the sensor away from center of loop = 2.10 cm = 0.021m
By substituting the parameters into the formulae, we have that
4.15 = 1.256×10^-6 × I × (3.25×10^-2)²/2{(0.021²) + (3.25×10^-2)²}^3/2
4.15 = 13.2665 × 10^-10 × I/ 2( 0.00149725)^3/2
4.15 = 1.32665 ×10^-9 × I / 2( 0.000058)
4.15 × 2( 0.000058) = 1.32665 ×10^-9 × I
I = 4.15 × 2( 0.000058)/ 1.32665 ×10^-9
I = 4.80×10^-4 / 1.32665 ×10^-9
I = 3.61×10^5 A
Ответ:
∠p, ∠q, and ∠r are all 40°
Step-by-step explanation:
ARQ is a triangle so the sum of the interior angles must equal 180°
48 + 52 = 100
180 - 100 = 80°
This means that the last angle, 2p = 80°
If 2p = 80, then ∠p = 40° (divide by 2)
PQR is also a triangle which means PR is a straight line
The angle next to 2p is going to be 100, because 2p was 80 and angles on a straight line add to 180° (180 - 80 = 100)
∠r = ∠p because they are alternate angles (in the sideways Z shape), 40°
∠q can be found by doing:
180 - (∠PAQ + ∠r)
= 180 - (100 + 40)
= 180 - 140
= 40