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
77julia77 [94]
3 years ago
6

What is an electromagnet? * 10 points A metal magnet that has electricity running through it. A metal magnet that creates an ele

ctric field. A magnetic field caused by electric current. A magnetic field caused by moving a magnet.
Physics
2 answers:
loris [4]3 years ago
5 0

Answer:

A magnetic field caused by electric current.

Explanation:

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in the hole, denoting the centre of the coil.

Reference.

Nave, Carl R. (2012). "Electromagnet". Hyperphysics. Dept. of Physics and Astronomy, Georgia State Univ. Archived from the original on September 22, 2014. Retrieved September 17, 2014.

natima [27]3 years ago
3 0

Answer:

A magnetic field caused by electric current

Explanation:

An electromagnetic is a magnetic field cause by electric current. It is a magnet which has the joint interaction of electric and magnetic forces.

You might be interested in
How far above Earth's surface do Gamma Waves reach?
velikii [3]
100 miles from earth

8 0
3 years ago
Read 2 more answers
Height-weight charts are an accurate way to measure ideal body weight.
Mademuasel [1]

Answer:

True

Explanation:

Charts are the most accurate way to measure most things. For example, a chart can help you understand how the population of the world has changed since 1998.

5 0
3 years ago
Read 2 more answers
How much work is done by the gravitational force when a 265-kg pile driver falls 2.80m?​
sp2606 [1]

Answer:

i dont know why are u asking me

Explanation:

6 0
3 years ago
In a carnival game, the player throws a ball at a haystack. For a typical throw, the ball leaves the hay with a speed exactly on
8_murik_8 [283]

Answer:

Ve(m) = sqrt (19.2/m)

Ve(0.35) = 7.407 m/s

Explanation:

Given:

- The ball has a mass = m

- The entry speed of the ball is Vi = Ve

- The final speed of the ball Vf = 0.5*Ve

- The constant frictional force on ball due to hay is F = 6 N

- The thickness of hay-stack is s = 1.2 m

- Assume the throw is in horizontal direction and neglect gravity forces

Find:

Derive an expression for the typical entry speed as a function of the inertia of the ball

What is the typical entry speed if the ball has an inertia of a 0.35 kg?

Solution:

- To determine the entry speed as a function of inertia we will use third equation of motion as follows:

                               Vf^2 = Vi^2 + 2*a*s

Where, a is acceleration of the ball through hay stack. We will use Newton's Law of motion to determine this:

                               F_net = m*a

The only force acting on the ball in its journey through hay-stack is the frictional force F:

                               - F = m*a

                                a = -F/m

- Input all the quantities in the third equation of motion:

                                (0.5Ve)^2 = Ve^2 - 2*F*s / m

                                0.75Ve^2 = 2*F*s / m

                                Ve = sqrt (8*F*s/3*m)

Plug in values:

                                Ve(m) = sqrt (8*6*1.2/3*m)

                                Ve(m) = sqrt (19.2/m)

- The entry speed for the inertia of the ball m = 0.35 kg is:

                                Ve(0.35) = sqrt(19.2/0.35)

                                Ve(0.35) = 7.407 m/s

8 0
4 years ago
Which is the higher temperature? (Assume temperatures to be exact numbers.)(a)1.)265°C or 265°F?2.)265°C3.)265°F 4.)They are the
vazorg [7]

Remember the following formulas to convert temperatures between Farenheit and Celsius:

\begin{gathered} \text{ Farenheit to Celsius:} \\ C=\frac{5(F-32)}{9} \\  \\ \text{ Celsius to Farenheit:} \\ F=\frac{9}{5}C+32 \end{gathered}

Convert all the temperatures to Celsius to compare them.

<h2>Part a)</h2>

Convert 265ºF to Celsius:

\begin{gathered} C=\frac{5(F-32)}{9} \\  \\ =\frac{5(265-32)}{9} \\  \\ =129.444... \end{gathered}

Then, 265ºF is equal to 129.444...ºC. Then, 265ºC is higher than 265ºF.

The correct choice is option 2) 265ºC.

Part b)

Convert 370ºF to Celsius:

\begin{gathered} C=\frac{5(F-32)}{9} \\  \\ =\frac{5(370-32)}{9} \\  \\ =187.777...ºC \end{gathered}

Then, 370ºF is equal to 187.777...ºC. Then, 200ºC is higher than 370ºF.

The correct choice is option 2) 200ºC.

7 0
1 year ago
Other questions:
  • Witch of the following sources of energy is not renewable
    13·1 answer
  • A subatomic particle could have a charge of
    14·1 answer
  • • How does AC work?
    7·1 answer
  • An airplane flies eastward and always accelerates at a constant rate. At one position along its path, it has a velocity of 28.9
    11·1 answer
  • PLEASE HELP MEEE, Manager Michael Scott drops a watermelon from a 10 story
    6·2 answers
  • Are the orbits of the planets on the same plane?
    14·1 answer
  • The GALEX observatory was a recent observatory. that was launched to observe over a half-billion galaxies going back to when our
    13·2 answers
  • Un auto recorre 212 km en un tiempo de 3.1 h.Calcular su rapidez en m/s
    8·1 answer
  • Draw a free body diagram of a person as their board accelerates them up into the sky. Be sure that, if a force is bigger than an
    12·1 answer
  • A single light beam is split into two equal beams, denoted a and b. beam a travels through a medium with a higher index of refra
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!