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
kakasveta [241]
3 years ago
8

7. A stereo is able to convert 20% of its electrical energy into sound. If 1000 J of sound energy is produced, calculate the ele

ctrical energy used [Show all work].
8. A vehicle is only 18% efficient. How was the other 82% of the energy lost?
Physics
1 answer:
Sonja [21]3 years ago
3 0

Answer:

As 20/100 E= 1000

E= 10,000/2

=5000J

You might be interested in
Why is conserving energy resources not a simple problem with a simple solution?
anyanavicka [17]

Answer:

Because the uncontrolled and unreasonable use of energy resources in the past few decades has led to the depletion of conventional type of resources. Although, measures are taken at the government levels to control the energy consumption, these attempts only meet with little success. Public awareness is the only way to successfully deal with this problem.

Explanation:

6 0
3 years ago
Read 2 more answers
A particle moving on a plane curve what is the degree of freedom
kirill115 [55]

A particle confined to move along a curved path has only one degree of freedom. inclined plane are some examples of constrained motion. Every condition of constraint reduces the number of degree of freedom by one.

I hope this helps!

7 0
3 years ago
A student in the Biomechanics class has decided that she would like to make her arms
Rufina [12.5K]

Answer:

what is heat and transfer

7 0
2 years ago
A variable that should not change throughout the experiment is a(n):
Natalka [10]
The answer is control variable
7 0
3 years ago
A circular loop of wire of cross-sectional area 0.12 m2 consists of 200 turns, each carrying 0.50 A. It is placed in a magnetic
defon

Answer:

0.52 Nm

Explanation:

A = 0.12 m^2, N = 200, i = 0.5 A, B = 0.050 T

Angle between the plane of loop and magnetic field = 30 Degree

Angle between the normal of loop and the magnetic field = 90 - 30 = 60 degree

θ = 60°

Torque = N i A B Sinθ

Torque = 200 x 0.5 x 0.12 x 0.050 x Sin 60

Torque = 0.52 Nm

4 0
3 years ago
Other questions:
  • The force of repulsion between two like-charged particles will increase if
    12·2 answers
  • Please help me with this science question
    14·1 answer
  • Light travels from crown glass (n=1:52) into air (n=1.00). The angle of refraction in
    11·1 answer
  • You are skydiving and accelerating at 9.8 meters per second
    13·1 answer
  • Strontium has how many neutrons
    11·2 answers
  • 6. A 1,780kg car moving at 14m/s takes a turn around a circle with a radius of 50.0m.
    5·1 answer
  • A river has a steady speed of 0.480 m/s. a student swims upstream a distance of 1.00 km and swims back to the starting point. (a
    13·1 answer
  • What has happened to the amount of water in the high plains aquifer over time
    13·1 answer
  • A bullet 2cm log is fired at 420m/s and passes straight a 10cm thick board exiting at 280m/s
    8·2 answers
  • Dust, accumulated at the time of the formation of the solar system is sometimes preserved in asteroids, meteoroids, and meteorit
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!