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
Alekssandra [29.7K]
3 years ago
11

A current of 9 A flows through an electric device with a resistance of 43 Ω. What must be the applied voltage in this particular

circuit?
A. 4.8 V
B. 4.8 A
C. 387 V
D. 387 A
Physics
1 answer:
blondinia [14]3 years ago
6 0
The answer is D. Hope this helps you!
You might be interested in
A cart of mass 6.0 kg moves with a speed of 3.0 m/s towards a second stationary cart with a mass of 3.0 kg. The carts move on a
katen-ka-za [31]

Answer:b

Explanation:

Given

mass of first cart m_1=6 kg

mass of second cart m_2=3 kg

velocity of first cart v_1=3 m/s

conserving momentum

m_1v_1+m_2v_2=(m_1+m_2)v

6\times 3+3\times 0=(9)\cdot v

v=2 m/s

Initial kinetic Energy K.E._1=\frac{1}{2}m_1v_1^2+\frac{1}{2}m_2v_2^2

K.E._1=\frac{1}{2}\cdot 6\cdot 3^2+0

K.E._1=27 J

Final Kinetic Energy

K.E._2=\frac{1}{2}(m_1+m_2)v^2

K.E._2=\frac{1}{2}(6+3)\cdot 2^2=18 J

Ratio of initial Kinetic Energy to the Final Kinetic Energy

=\frac{27}{18}=1.5

6 0
3 years ago
Which type of galaxy has the most active star formation?
UkoKoshka [18]
That answer is spiral galaxies
8 0
3 years ago
Read 2 more answers
Suppose the electric field in problems 2 was caused by a point charge. The test charge is moved to a distance twice as far from
mojhsa [17]

Answer:

it is reduced four times.

Explanation:

By definition, the electric field is the force per unit charge created by a charge distribution.

If the charge creating the field is a point charge, the force exerted by it on a test charge, must obey Coulomb´s Law, so, it must be inversely proportional to the square of the distance between the charges.

So, if the distance increases twice, as the force is inversely proportional to the square of the distance, and the square of 2 is 4, this means that the magnitude of the force exerted on the test charge must be 4 times smaller.

8 0
3 years ago
What is space time?​
Kay [80]
In physics, spacetime is any mathematical model which fuses the three dimensions of space and the one dimension of time into a single four-dimensional manifold. Spacetime diagrams can be used to visualize relativistic effects, such as why different observers perceive where and when events occur differently.
6 0
3 years ago
What does infrastructure refer to? process by which a nation improves the economic, political, and social well-being of its peop
Travka [436]

Answer:

Infrastructure is the term for the basic physical systems of a business or nation—transportation, communication, sewage, water, and electric systems are all examples of infrastructure

Explanation:

These systems tend to be high-cost investments and are vital to a country's economic development and prosperity.

7 0
3 years ago
Other questions:
  • Advection fog occurs when humid air move over cold ground
    8·1 answer
  • A car, a bicycle, a bus, and a motorcycle are moving parallel to each other on a road. Each vehicle is traveling at the same spe
    14·1 answer
  • If the mass of the egg is 60 grams (0.06 Kg), and the mass of your device is 0.5 Kg, calculate the Force of Gravity on your devi
    9·1 answer
  • Which of the following objects has the most gravity? A. a semi-truck B. A grain of sand C. Jupiter D. All of these have equal gr
    10·1 answer
  • The electric force is exerted by a 40-nC charged particle located at the origin of a Cartesian coordinate system on a 10-nC char
    13·1 answer
  • Can someone Please help
    12·1 answer
  • What is the difference between panda and rhino?​
    7·2 answers
  • A Person is carrying 6kg in one hand and 5kg in another.Calculate the resultant force applied by him​
    12·1 answer
  • How is the gravitational force acting on a falling object calculated
    13·1 answer
  • An object weighs 200N, what is its mass?​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!