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
dalvyx [7]
3 years ago
14

A conducting bar slides without friction on two parallel horizontal rails that are 50 cm apart and connected by a wire at one en

d. The resistance of the bar and the rails is constant and equal to 0.10 Ω. A uniform magnetic field is perpendicular to the plane of the rails. A 0.080-N force parallel to the rails is required to keep the bar moving at a constant speed of 0.50 m/s. What is the magnitude of the magnetic field?
Physics
1 answer:
MatroZZZ [7]3 years ago
7 0

Answer:

0.25 T

Explanation:

F = Force required to keep the bar moving = 0.080 N

B = magnitude of magnetic field = ?

L = length of the bar = 50 cm = 0.50 m

v = speed of the bar = 0.50 m/s

R = resistance of the bar =0.10 Ω

Force is given as

F = \frac{B^{2}L^{2}v}{R}

0.08 = \frac{B^{2}(0.50)^{2}(0.50)}{0.10}

B = 0.25 T

You might be interested in
Find B when θ=35, E=10V, t=5, N=250, A=1.20m^2
givi [52]

Answer:

its most definitely c. trust me

Explanation:

3 0
2 years ago
Swimmers at the beach are tanning on towels. Which method of heat transfer is responsible for their tan? *
Free_Kalibri [48]

Answer:

ratiation

Explanation:

3 0
3 years ago
Read 2 more answers
Which of the physical variables listed below will change when you change the area of the capacitor plates (while keeping the bat
RSB [31]

Answer:

a. Capacitance

b. Charge on the plates  

e. Energy stored in the capacitor

Explanation:

Let A be the area of the capacitor plate

The capacitance of a capacitor is given as;

C = \frac{Q}{V} = \frac{\epsilon _0 A}{d} \\\\

where;

V is the potential difference between the plates

The charge on the plates is given as;

Q = \frac{V\epsilon _0 A}{d}

The energy stored in the capacitor is given as;

E = \frac{1}{2} CV^2\\\\E = \frac{1}{2} (\frac{\epsilon _0 A}{d} )V^2

Thus, the physical variables listed that will change include;

a. Capacitance

b. Charge on the plates  

e. Energy stored in the capacitor

3 0
3 years ago
Identify three specific situations in which machines make work easier.
Komok [63]
Construction, like building a home/building, digging, like in a mine, and opening a soda can, where the part to open is a lever.
5 0
3 years ago
Factor the expression 27x-18y
Eva8 [605]

Answer:

9(3x-2y)

Explanation:

27x-18y, the common factor here is 9

9(3x-2y)

7 0
3 years ago
Other questions:
  • Constructive interference results in a wave with a _______________ amplitude than any of the component waves.
    13·2 answers
  • The distance between the first and fifth minima of a single-slit diffraction pattern is 0.350 mm with the screen 39.0 cm away fr
    12·1 answer
  • HELP ASAP. WILL GIVE BRAINLIEST.
    14·1 answer
  • Why does light of a certain frequency need to be used to produce a current in the photoelectric effect?
    5·1 answer
  • A disk, initially rotating at 120 rpm, is slowed down with a constant acceleration of magnitude 4 rad s2. If the disk has diamet
    15·1 answer
  • Cyclist A and B cycled atan average speed of 15 km/h and 20 km/h respectively from the same starting point X on the same route.
    6·1 answer
  • What is Newton's universal law of gravitation
    10·1 answer
  • help please According to the Universal Law of Gravitation, every object attracts every other object in the universe. Why can’t y
    5·1 answer
  • Despite the use of diffrent types of measurement in our country<br>​
    13·1 answer
  • The p-type or N-type semiconductor is not of practical use. Why?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!