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
Evgesh-ka [11]
2 years ago
9

Coiling wire around an iron core and applying an electric current through the wire creates a temporary magnet called an electrom

agnet. What would increase the strength of an electromagnet? A) Use a smaller nail. B) Use a battery with less voltage. C) Use a battery with more voltage. D) Use fewer coils of wire around the nail.
Physics
2 answers:
Serggg [28]2 years ago
5 0

Answer:

C) Use a battery with more voltage.

Explanation:

The equation for the magnetic field around a coil is given by,

B = μ₀NI

where,

B = Magnetic flux density

μ₀ = permeability

N = number of turns per meter

I = Current in the wire

So when using a higher voltage battery, more current passes through the battery as resistance of the wire remains the same.

nydimaria [60]2 years ago
4 0

Answer:

C) Use a battery with more voltage.

Explanation:

To increase the strength of the electromagnet use a battery with more voltage.

You might be interested in
What will happen if you rub two different materials together?
Dafna1 [17]
It will cause heat from friction
6 0
3 years ago
Read 2 more answers
(a) Calculate the absolute pressure at the bottom of a freshwater lake at a point whose depth is 30.0 m. Assume the density of t
Law Incorporation [45]

Answer:

(a) The absolute pressure at the bottom of the freshwater lake is 395.3 kPa

(b) The force exerted by the water on the window is 36101.5 N

Explanation:

(a)

The absolute pressure is given by the formula

P = P_{o} + \rho gh

Where P is the absolute pressure

P_{o} is the atmospheric pressure

\rho is the density

g is the acceleration due to gravity (Take g = 9.8 m/s^{2} )

h is the height

From the question

h = 30.0 m

\rho = 1.00 × 10³ kg/m³ = 1000 kg/m³

P_{o} = 101.3 kPa = 101300 Pa

Using the formula

P = P_{o} + \rho gh

P = 101300 + (1000×9.8×30.0)

P = 101300 + 294000

P =395300 Pa

P = 395.3 kPa

Hence, the absolute pressure at the bottom of the freshwater lake is 395.3 kPa

(b)

For the force exerted

From

P = F/A

Where P is the pressure

F is the force

and A is the area

Then, F = P × A

Here, The area will be area of the window of the underwater vehicle.

Diameter of the circular window = 34.1 cm = 0.341 m

From Area = πD²/4

Then, A = π×(0.341)²/4 = 0.0913269 m²

Now,

From F = P × A

F = 395300 × 0.0913269

F = 36101.5 N

Hence, the force exerted by the water on the window is 36101.5 N

5 0
2 years ago
Please help me, it's a simple equation
castortr0y [4]

Because the elevator moves at a constant speed, it's in equilibrium and the net force acting on it is zero. Then the tension in the cable exactly equals the magnitude of the elevator's weight, which is

(3000 kg) (9.80 m/s²) = 29,400 N

3 0
2 years ago
Which of the following best explains why most chemical reactions proceed more quickly when the concentrations of reactants are i
nekit [7.7K]
A More concentrated means more collisions per unit volume, and as the volume stays the same and only concentration changes, the there are more collisions
3 0
3 years ago
Which term is used to describe the variety of inheritable traits in a species?
choli [55]
Genetic i think is it right?
7 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the displacement of the volleyball in sample problem 2f when teh volleyballs final velocity is 1.1 m/s upward
    7·1 answer
  • Formation of a precipitate is usually evidence of?
    7·2 answers
  • What is the speed vf of the package when it hits the ground?
    7·1 answer
  • A steel aircraft carrier is 370 m long when moving through the icy North Atlantic at a temperature of 2.0 °C. By how much does t
    6·1 answer
  • Which three types of electromagnetic waves carry most of the Sun's energy that strikes Earth?
    11·1 answer
  • The speed limit in a school zone is 25.mph what is the speed in m/s
    15·2 answers
  • Who was copernicus and what have he done for science?
    15·1 answer
  • A projectile is fired with an initial speed of 37.0 m/s at an angle of 43.7 ∘ above the horizontal on a long flat firing range.
    14·1 answer
  • An object has a coefficient of static friction of 0.3 and a normal force of 30 N. Find the force of static friction.
    5·2 answers
  • A box of unknown weight is 1 m away from the fulcrum. To balance the sides, a student applies a force of 4 N at a distance of 3
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!