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
slavikrds [6]
3 years ago
12

Finally, the switch on the electromagnet is reopened. The magnitude of the external magnetic flux through the wire loop ______ (

A. increases, B. decreases, C. remains constant), and there is _______ (A. zero, B. a clockwise, C. a counterclockwise) current induced in the loop (as seen from the left).
Physics
1 answer:
Maksim231197 [3]3 years ago
7 0

Answer:

B, B (decreases, a clockwise)

Explanation:

Finally, the switch on the electromagnet is reopened. The magnitude of the external magnetic flux through the wire loop <u>decreases</u>, and there is <u>a clockwise</u>, current induced in the loop (as seen from the left).

You might be interested in
A 240 cm length of string has a mass of 2.5 g. It is stretched with a tension of 8.0 N between fixed supports. (a) What is the w
kotykmax [81]

Answer:

a.87.6 m/s

b.18.25 Hz

Explanation:

the equation for the wave speed is expressed as

v=\sqrt{\frac{Tl}{m}}\\

where v is the speed,

           T is the tension in Newton

           l is the length

and      m is the mass

Now since

T=8.0N\\m=2.5g=0.0025kg\\l= 240cm=2.40cm\\

by substituting values into the equation, we have

v=\sqrt{\frac{8*2.40}{0.0025} } \\v=87.6m/s\\

b. the expression for the frequency is giving as

Frequency,f=\frac{v}{2l} \\f=\frac{87.6}{2*2.40} \\f=18.25Hz\\.

Note we 2L as the wavelength because we solving for the fundamental frequency as stated in the question.

3 0
3 years ago
a uniform rod of length 1.5m is placed over a wedge at 0.5m from one end .a force of 100 N is applied at its one end near the we
andreev551 [17]

Explanation:

The rod is uniform, so the center of gravity is at the center, or 0.75 m from the end.  The wedge is 0.5 m from the end, so the center is 0.25 m from the wedge.

Sum the torques about the wedge (it may help to draw a diagram first).  Take counterclockwise to be positive.

∑τ = Iα

W (0.25 m) − (100 N) (0.50 m) = 0

W = 200 N

Sum the forces in the y direction.

∑F = ma

F − 100 N − 200 N = 0

F = 300 N

8 0
3 years ago
2Mg+2HCI TO 2MgCI+2H2
motikmotik
2Mg + 2HCl →2MgCl + 2H₂

Balanced is:

4Mg + 4HCl → 4MgCl + 2H₂

I Hope I Helped 

ΩΩΩΩΩΩΩΩΩΩ
6 0
3 years ago
**Fill in the blanks**
Nataly_w [17]

Answer:

Word for the first blank: gravity

Word for the second blank: matter

Explanation:

The only way debris from the impact with Earth can be held close to Earth is due to a force. The only force that could be acting from Earth is "the force of gravity".

The gravitational pull of this new object being formed, increases proportional to its mass as more and more "matter" accumulates. And the accretion process is now on its way.

4 0
3 years ago
Read 2 more answers
How can accuracy be limited?
lozanna [386]

Answer:

accuracy refers to the deviation of a measurement from a standard or true value of the quantity being measured

5 0
3 years ago
Other questions:
  • Without his glasses, Isaac can see objects clearly only if they are less than 4.7 m from his eyes.
    9·1 answer
  • 1 what were the two classifications of motion, according to aristotle? a 2 according to aristotle, what kinds of motion required
    9·1 answer
  • Which is a property of the group highlighted in the periodic table?
    5·1 answer
  • What is the term for movement in a particular direction
    13·1 answer
  • Is the
    15·1 answer
  • I need help with this please
    12·1 answer
  • Two objects collide and bounce apart. Assuming no outside forces act on the system, which best describes the total momentum afte
    6·2 answers
  • Imagine a block that is 10 cm x 10 cm x 10 cm. If you cut the block in half, what then would be the dimensions of 1/2 of the blo
    10·1 answer
  • A bullet is fired through a board, 14.0 cm thick, with its line of motion perpendicular to the face of the board. If it enters w
    7·1 answer
  • If you do 40 j of work in 4s, how much power did you generate?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!