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
stiks02 [169]
3 years ago
6

How is the strength of an electromagnet affected by the number of turns of wire in a coil? e

Physics
1 answer:
Anastasy [175]3 years ago
3 0

Answer:I don't know

Explanation:

You might be interested in
A wire of resistance 5.9 Ω is connected to a battery whose emf ε is 4.0 V and whose internal resistance is 1.2 Ω. In 2.9 min, ho
dexar [7]

Answer:

a) 390J

b) 322J

c) 68J

Explanation:

We need to calculate the power given by the battery. the power is given by:

P=V*I\\I=\frac{V}{R}\\I=\frac{4}{5.9+1.2}\\I=0.56A\\P=2.24W

Watts is J/s so:

E=P*t\\E=2.24\frac{J}{s}*2.9min*(60\frac{s}{min})=390J

The thermal energy in the wire is given by:

E_w=P_w*t\\P_w=I^2*R_w=0.56^2*5.9=1.85W\\E_w=1.85\frac{J}{s}*2.9min*(60\frac{s}{min})=322J

And the the dissipated thermal energy in the battery will be the remainig energy:

E_b=E-E_w\\E_b=390-322=68J

4 0
4 years ago
An 80 kg skateboarder moving at 3 m/s pushes off with her back foot to move faster.
Dmitry [639]

Answer:

640 J

640 J

Explanation:

ΔKE = ½ mv² − ½ mu²

ΔKE = ½ m (v² − u²)

ΔKE = ½ (80 kg) ((5 m/s)² − (3 m/s)²)

ΔKE = 640 J

Work = ΔE

Work = 640 J

5 0
3 years ago
Read 2 more answers
The Earth rotates and the moon revolves in the same direction.<br><br> True<br> False
tatyana61 [14]
The moon orbits the earth in the same direction as the earth, like if you had a ball on a string and you started spinning, the ball would spin the same direction.<span />
7 0
3 years ago
Read 2 more answers
Which of the following electrical components is a temporary electrical energy storage device?
7nadin3 [17]

Answer:

A capacitor

Explanation:

Because it can store electric energy when disconnected from its charging circuit. Commonly used in electronic devices to maintain power supply while batteries change.

Hope this helps! :)

6 0
3 years ago
If you applied a 11 N force to a box and made it travel 108 m in 7
snow_lady [41]

Explanation:

due to the local people in the advantage and the value of that house so that there were no people this answer was belonging to define in refinery of the circuit

6 0
4 years ago
Other questions:
  • The chart shows data for an object moving at a constant acceleration. Which values best complete the chart? X: 0 Y: 0 Z: 0 X: 2
    11·2 answers
  • Describe what happens to the pressure, volume, and temperature of the gas in the internal combustion engine during the compressi
    10·1 answer
  • Calculate the specific heat at constant volume of water vapor, assuming the nonlinear triatomic molecule has three translational
    7·1 answer
  • How would you calculate an object’s mechanical energy? a. Add its kinetic and potential energies. b. Multiply its kinetic and po
    15·2 answers
  • The weight of a body in earth is 29N. Find the mass?
    14·1 answer
  • An ion's position vector is initially r = 8.0 i - 4.0 j + 3.0 k, and 8.0 s later it is r = 4.0 i + 8.0 j - 6.0 k, all in meters.
    11·1 answer
  • A rocket leaves the Earth at 8:00 am and arrives at the moon at 2:00 pm on the same day. The moon is 150,000 miles away. How fas
    10·2 answers
  • What could you do to increase the electric potential energy between two
    13·1 answer
  • Group of physics students are asked to demonstrate Ohm’s Law in parallel circuits.  Using their knowledge of Ohm’s Law and the r
    6·1 answer
  • The following sentences describe chemical reactions. For each one, enter the skeletal structure of the reaction in the text box.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!