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
zaharov [31]
2 years ago
10

We can model a certain battery as a voltage source in series with a resistance. The open-circuit voltage of the battery is 10 V

. When a 120-Ω resistor is placed across the terminals of the battery, the voltage drops to 7 V. Determine the internal resistance of the battery.
Engineering
1 answer:
Angelina_Jolie [31]2 years ago
3 0

Answer:

51.4 Ohms

Explanation:

By applying voltage division rule

V_f=v_i\times \frac {R_l}{R_l+R_m} where v is voltage, subscripts i and f represnt initial and final, R is resistance, m is internal and l is external.Substituting 7V for final voltage, 10V for initial voltage and the external resistance as 120 Ohms then

7=10*\frac {120}{120+R_m}\\7R_m+840=1200\\R_m={1200-840}{7}=51.428571\approx 51.4 Ohms

You might be interested in
Water flows at low speed through a circular tube with inside diameter of 2 in. A smoothly contoured body of 1.5 in. diameter is
Art [367]

Answer:

Pressure = 11.38 psi

Force = 13.981 Ibf

Explanation:

Step by step solution is in the attached document.

5 0
3 years ago
What is a smooth flow of air over a surface is called?
pochemuha

Answer:

laminar flow

Explanation:

In fluid dynamics, laminar flow is characterized by fluid particles following smooth paths in layers, with each layer moving smoothly past the adjacent layers with little or no mixing.

4 0
3 years ago
Airbags will deploy in a head on collision but not in a collision that occurs from angle
Aneli [31]

Answer:  

Airbags will deploy in almost any angle.

Explanation:

Cars have sensors around them, so when the car gets hit, the sensors detect a crash and deploy the airbags to keep you safe.

8 0
3 years ago
A large retirement village has a total retail employment of 120. All 1600 of the households in this village consist of two nonwo
polet [3.4K]

Answer:

See explaination

Explanation:

Please kindly check attachment for the step by step solution of the given problem.

5 0
3 years ago
Though still is on the margins of the global agro-food system, organic farming practices are on the rise in the core. In growing
lisabon 2012 [21]

Answer: composted cow manure

Explanation:

A cow manure consists of high levels of ammonia, pathogens which can harm the plants thus cannot be used as fertilizer. The composted cow manure is a processed fertilizer which is prepared by eliminating the ammonia gas and pathogens. It is prepared by adding up the additional organic matter.

It is an excellent growing medium for the agricultural crops and garden plants as it is a nutrient rich fertilizer. It is mixed into the soil or can be used for top dressing of the agricultural field. It is a kind of organic manure.

4 0
2 years ago
Other questions:
  • At an impaired driver checkpoint, the time required to conduct the impairment test varies (according to an exponential distribut
    6·1 answer
  • The cables of a power line are copper-coated steel wire. The overall diameter of the wire is 5/8 in. The steel core has a diamet
    8·1 answer
  • A Scalar can only be a positive quantity that has a magnitude but no direction ? a)-True b)-False
    5·1 answer
  • Might give brainliest
    8·1 answer
  • How many astronauts work<br> in the International Space Station
    7·1 answer
  • Which of the following requirement statements is an example of a breakdown of the accuracy standard?
    11·1 answer
  • Cup-sveg-aph<br><br>I m finding gf<br><br>if anyone interested pls come​
    11·2 answers
  • The difference between an initial condition and a boundary condition for conduction in a solid is:___________
    9·1 answer
  • Which emission is created by the heat in the combustion process?
    5·2 answers
  • How does data mining help interactive marketing for a business?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!