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
mariarad [96]
3 years ago
14

The quantity of charge passing through a surface of area 1.82 cm2 varies with time as q = q1 t 3 + q2 t + q3 , where q1 = 5.2 C/

s 3 , q2 = 2.5 C/s, q3 = 6.5 C, and t is in seconds. What is the instantaneous current through the surface at t = 1.1 s? Answer in units of A.
Physics
1 answer:
Brrunno [24]3 years ago
3 0

Answer:

Current through the surface at t = 1.1 s is 21.37 A.

Explanation:

The charge is passing through a surface of area varies with time as :

q=q_1t^3+q_2t+q_3

Here,

q_1=5.2\ C/s^3\\\\q_2=2.5\ C/s\\\\q_3=6.5\ C

t is in seconds

q=5.2t^3+2.5t+6.5

The rate of change of electric charge is called electric current. It is given by :

I=\dfrac{dq}{dt}\\\\I=\dfrac{d(5.2t^3+2.5t+6.5)}{dt}\\\\I=15.6t^2+2.5

At t = 1.1 s, Current,

I=15.6(1.1)^2+2.5\\\\I=21.37\ A

So, the instantaneous current through the surface at t = 1.1 s is 21.37 A.

You might be interested in
When enough ____ is added to the substance, the solid reaches its ____ point and becomes a liquid
Ratling [72]

Answer:  When enough __energy__ is added to the substance, the solid reaches its _melting_ point and becomes a liquid

Explanation: since energy is being added the substance changes phase into a liquid .

8 0
3 years ago
Magnectic striping is evidence of ?
wolverine [178]

Answer: Magnetizim

Explanation: Magnetic Atoms collide creating magnetizim

5 0
3 years ago
Which of the following adaptations best protects birds from bird catchers?
andrew-mc [135]
Wings to fly. Without flying, birds would be near defenseless.
5 0
3 years ago
Read 2 more answers
How can the speed of a mechanical wave energy be calculated
Slav-nsk [51]
Speed = frequency * wavelength
5 0
3 years ago
Identify and sketch all the external forces acting on the chair. because the chair can be represented as a point particle of mas
SOVA2 [1]

There are two external force acts on the chair.

1. The force due to earth gravity, acts in the downward direction.

2. Reaction force of the gravity, which acts in the Upward direction (Normal Force).

On every object, there is a force acts due to gravity of earth, which pulls the object towards the centre of earth, known as gravity force, always acts in the downward direction. Mathematically it's given as

F=mg

here, m is the mass of the object, and g is the acceleration of gravity.

To balance this gravity force, a counter force acts in the opposite direction, whose magnitude is equal to the force of gravity

8 0
3 years ago
Read 2 more answers
Other questions:
  • When light of wavelength 240 nm falls on a cobalt surface, electrons having a maximum kinetic energy of 0.17 eV are emitted. Fin
    10·1 answer
  • What average force is necessary to bring a 50.2-kg sled from rest to a speed of 2.8 m/s in a period of 20.1 s?
    15·1 answer
  • A wrench 0.500 m long is applied to a nut with a force of 80.0 N. Because of the cramped space, the force must be exerted upward
    10·1 answer
  • Which is not part of nuclear chemistry? A. Strong nuclear force B. Double-replacement reactions C. Radioactivity D. Nuclear deca
    10·2 answers
  • Which letter represents the position of maximum potential energy of the pendulum
    12·1 answer
  • Read the following experiment. Describe the experiment's results; identify which of Newton's laws is illustrated and how these r
    8·1 answer
  • What is the velocity of an object that has been in free fall for 2.5 seconds??​
    13·1 answer
  • A loop of wire in the shape of a rectangle rotates with a frequency of 219 rotation per minute in an applied magnetic field of m
    6·1 answer
  • Q3. A large block of stone is held at a height of 15m having gained 4500J
    8·1 answer
  • This graph shows the energy of a reaction over time. Which statement is
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!