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
Oduvanchick [21]
3 years ago
10

The charge that passes a cross-sectional area A=10-4 m2 varies with time according

Physics
1 answer:
Anarel [89]3 years ago
6 0

Answer:

Current = dQ/dt

or I = dQ/dt

Where I represents current.

Which is the rate of flow of charge.

Q=4 + 2t + t²

dQ/dt = 2 + 2t --- This is the relation that gives the instantaneous current.

At time t=2sec

dQ/dt = I = 2 + 2t

= 2 + 2(2)

=2 + 4

= 6A.

You might be interested in
I need help real quick. Please help me!!
dimaraw [331]
<h3><u>Answer;</u></h3>

D) Standing wave

<h3><u>Explanation;</u></h3>
  • Standing wave also called stationary wave  is a wave which oscillates in time but whose peak amplitude profile does not move in space.
  • A standing wave pattern is a vibrational pattern created within a medium when the vibrational frequency of the source causes reflected waves from one end of the medium to interfere with incident waves from the source.
  • Examples of standing waves include the vibration of a violin string and electron orbitals in an atom.
4 0
3 years ago
A child pushes a 75 N toy car across the floor. What is the mass of the car?
GaryK [48]

Answer:

7.6 kg

Explanation:

w=75N

w=mg

m=w÷g

m=75÷9.8

m=7.6kg

8 0
3 years ago
What is a rock cycle?
DochEvi [55]

Answer:

an idealized cycle of processes undergone by rocks in the earth's crust

7 0
3 years ago
What is the potential energy of a 30 Newton ball that is on the ground
Juli2301 [7.4K]
The potential energy of a 30N ball on the ground will be zero. With respect to height, h. Potential energy will be calculated like this. P=mgh. So if its on the ground relatively speaking the h=0. Thus inputting into the above formula. P=0.
3 0
3 years ago
How do you find the capacitance in this?
Lostsunrise [7]

Answer:

Explanation:

parallel capacitances add directly

Series capacitances add by reciprocal of sum of reciprocals.

Ceq = [ C ] + [1 / (1/C + 1/C)] + [1 / (1/C + 1/C + 1/C)]

Ceq = [ C ] + [C / 2] + [C / 3]

Ceq = [ 6C/6 ] + [3C / 6] + [2C / 6]

Ceq = 11C/6

3 0
2 years ago
Other questions:
  • A student is hit with a 1 kg pumpkin pie. The kinetic energy of the pie 32 J. What was the speed of the pie?
    12·1 answer
  • Alcohol occurs when the desire to feel good and have the pleasurable feelings associated with alcohol or other drugs drives desi
    11·1 answer
  • It is advised not to hold the thermometer by the bulb while reading it
    12·1 answer
  • From Doppler shifts of the spectral lines in the light coming from the east and west edges of the Sun, astronomers find that the
    13·1 answer
  • Which statement best summarizes the central idea of "Applications of Newton's Law
    10·2 answers
  • Derive the expression for the range of the ball as a function of its height. To do this you should use the following steps. In t
    7·1 answer
  • A box that is sliding across the floor experiences a net force of 10.0 N. If the box has a mass of 1.50 kg, what is the resultin
    15·1 answer
  • An egg is drown at a wall and breaks. A second egg is thrown at the same velocity and collides with a bed sheet. The egg does no
    6·1 answer
  • Your friend says their laptop speakers
    10·1 answer
  • 6. An elevator takes 33k) of energy to lift a group of people up 6 m. What is the total mass of
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!