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
Sonja [21]
3 years ago
9

It is known that birds can detect the earth's magnetic field, but the mechanism of how they do this is not known. It has been su

ggested that perhaps they detect a motional EMF as they fly north to south, but it turns out that the induced voltages are small compared to the voltages normally encountered in cells, so this is probably not the mechanism involved. To check this out, calculate the induced voltage for a wild goose with a wingspan of 1.2 m flying due south at 13 m/s at a point where the earth's magnetic field is 5 x 10-5 T directed downward from horizontal by 40-degrees. The expected voltage would be about:A) .50 mV B) .25 mV C) .60 mV D) .060 mV E) .78 mV
Physics
1 answer:
Lubov Fominskaja [6]3 years ago
8 0

Answer:

A) 0.50 mV

Explanation:

In this problem, we can think the wings of the bird as a metal rod moving across a magnetic field. So, and emf will be induced into the wings of the bird, according to the formula:

\epsilon = BvL sin \theta

where

B=5\cdot 10^{-5} T is the strength of the magnetic field

v = 13 m/s is the speed of the bird

L = 1.2 m is the wingspan of the bird

\theta=40^{\circ} is the angle between the direction of motion and the direction of the magnetic field

Substituting numbers into the formula, we find

\epsilon = (5.0\cdot 10^{-5} T)(13 m/s)(1.2 m) sin 40^{\circ}=0.00050 V = 0.50 mV

You might be interested in
Why is it making me do this
Julli [10]

Answer:

I don't know.

Explanation:

I have no idea what you are referring to.

4 0
1 year ago
A _____ lens is used to converge light<br><br> A. Convex<br> B. Concave
disa [49]
A convex lens<span> makes </span>light<span> rays </span><span>converge </span>
6 0
3 years ago
Read 2 more answers
Where in a river would you find fish that are adapted to low light and low oxygen levels?
snow_tiger [21]
The dead Zone is where you were find fish that are adapted to low light and low oxygen levels. 
7 0
3 years ago
Work functions of tungsten and sodium are 4.4 eV and 2.3 eV respectively. If threshold
KonstantinChe [14]

Answer:

(d) 2840 A

Explanation:

Threshold frequency can be be calculated using expresion below

(λ)= hc/ Φ

(λ) sodium/ (λ)tungsten = Φtungsten/ Φsodium

But (λ) sodium is given as 5460 A,

Φsodium = 2.3 eV

Φtungsten= 4.4 eV

If we substitute the values we can find

(λ)tungsten.

(λ)tungsten= [(λ) sodium × Φsodium]/ Φtungsten

=( 5460× 2.3)/4.4

= 2854A

Hence, threshold wavelength of tungsten is 2854A

5 0
3 years ago
Which statements describe how heat flows in foil? Check all that apply.
Tcecarenko [31]

Answer:

<h2>Heat flows from a warmer object to a cooler object. </h2>
4 0
2 years ago
Other questions:
  • What are most fossils discovered in
    12·1 answer
  • Calculate the amount of heat (in kJ) required to convert 97.6 g of water to steam at 100° C. (The molar heat of vaporization of
    9·1 answer
  • Merry-go-rounds are a common ride in park playgrounds. The ride is a horizontal disk that rotates about a vertical axis at their
    6·1 answer
  • What is the energy level of hydrogen?
    10·1 answer
  • What do waves transmit? (Points : 1)
    5·2 answers
  • an object with a mass of 6 kg accelerates 4 m/s2 when an unknown force is applied to it. what is the amount of the force?
    7·2 answers
  • WILL MARK BRAINLIEST PLEASE HELP AND SHOW ALL WORK
    13·1 answer
  • El. A horizontally directed force of 40 N is used to pull a box a distance of 2.5 m across a tabletop. How much work is done by
    11·1 answer
  • How to find the sum of a convergent series
    8·1 answer
  • _________ light is unique in that it vibrates mostly in one direction.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!