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
matrenka [14]
3 years ago
9

A switch that connects a battery to a 30μf capacitor is closed. several seconds later you find that the capacitor plates are cha

rged to ±30μc. part a what is the emf of the battery?
Physics
1 answer:
Elanso [62]3 years ago
5 0
You can find the emf of the battery by using:

Q = CV.

Q = Charge in capacitor plates = 30μC
C = Capacitance of the capacitor = 30μF

V = Q/C = 30/30 = 1V

Ans: The emf of the battery = 1V.
You might be interested in
PLEASEE I NEED HELP FAST!!! .Study the scenario.A small container of water with a low temperature is poured into a large contain
RSB [31]

Answer:

that best describes the process is C

Explanation:

This problem is a calorimeter process where the heat given off by one body is equal to the heat absorbed by the other.

Heat absorbed by the smallest container

             Q_c = m ce (T_{f}-T₀)

Heat released by the largest container is

              Q_a = M ce (T_{i}-T_{f})

how

        Q_c = Q_a

       m (T_{f}-T₀) = M (T_{i} - T_{f})

Therefore, we see that the smaller container has less thermal energy and when placed in contact with the larger one, it absorbs part of the heat from it until the thermal energy of the two containers is the same.

Of the final statements, the one that best describes the process is C

since it talks about the thermal energy and the heat that is transferred in the process

8 0
4 years ago
Se coloca una tuerca con una llave, como muestra la figura, si el brazo r= 30 cm y el torque de apriete recomendado para la fuer
irina [24]

Answer:

F = 100 N

Explanation:

The torque is given by the expression

      τ = F x r

where bold letters indicate vectors, the magnitude of this expression is

     τ = F r sin θ

In general, when tightening a nut, the force is applied perpendicular to the arm, therefore  θ = 90 and sin 90 = 1

      τ = F r

      F = τ / r

calculate

      F = 30 / 0.30

      F = 100 N

6 0
3 years ago
Answer pls will give 20 points per person
LuckyWell [14K]

Answer: question 1 is b I believe

Explanation:

every action has an opposite reaction

7 0
3 years ago
Read 2 more answers
You can make the current in a circuit smaller by?
scZoUnD [109]

Decreasing the amount of current flowing through the circuit by using a 5 volt battery instead of a 10 volt battery.

3 0
3 years ago
Read 2 more answers
Six parallel-plate capacitors of identical plate separation have different plate areas a, different capacitances c, and differen
lina2011 [118]

<span>Seis condensadores de placas paralelas de separación de placas idénticas tienen diferentes áreas de placa a, diferentes capacitancias c, y dieléctricos diferentes que llenan el espacio entre las placas. A continuación se muestra un diagrama genérico de lo que cada uno de estos condensadores podría parecer
</span>
6 0
3 years ago
Other questions:
  • The change in pitch of a train's horn as it passes while you are standing still can be explained by
    14·2 answers
  • The velocity of any object depends upon
    10·2 answers
  • 20 PTS!!!!!!
    6·2 answers
  • One type of entrepreneurial business could be an online business, and the article
    5·2 answers
  • The following quantities describe location or its change:position, distance, and a displacement. Which are vectors?
    15·2 answers
  • R: Law of Conservation of Energy Pre-Write
    12·1 answer
  • shows two parallel nonconducting rings with their central axes along a common line. Ring 1 has uniform charge q1 and radius R; r
    7·2 answers
  • Which property is shown by the rails of a railway track?
    9·1 answer
  • Bipolar disorder demographic?
    7·1 answer
  • Step by step process please<br>I know the ans but not the process ​<br>pic attached
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!