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
VashaNatasha [74]
3 years ago
8

Answer this for me please and thank you

Physics
1 answer:
Zinaida [17]3 years ago
7 0
Pretty sure its the 2nd one hope this helps :)
You might be interested in
GIZMO
CaHeK987 [17]
It is A or D but I believe A
5 0
3 years ago
A series circuit has a capacitor of 10−5 F, a resistor of 3 × 102 Ω, and an inductor of 0.2 H. The initial charge on the capacit
Alexus [3.1K]

Given the values to proceed to solve the exercise, we resort to the solution of the exercise through differential equations.

The problem can be modeled through a linear equation, in the form:

10^5 Q +300Q'+0.2Q''=0

With the initial conditions as,

Q(0) = 10^{-6}

Q'(0)= 0

Where Q(t) is the charge.

<em>The general solution of a linear equation is given as:</em>

<em>y(x) = c_1e^{-ax}+c_2e^{-bx}</em>

Applying this definiton in our differential equation we have that

Q(t) = C_1e^{at}+C_2e^{bt}

To find b and a we use the first equation and find the roots:

r_{a,b} = \frac{-300 \pm \sqrt{(300)^3-4(0.2)*10^5}}{0.4}

r_{a,b} = {-1000,-500}

Then we have

Q(t) = C_1e^{-1000t}+C_2e^{-500t}

To find the values of the Constant we apply the initial conditions, then

Q(0)= 10^{-6} = C_1+C_2

And for the derivate:

Q'(t) = -1000C_1e^{-1000t}-500C_2e^{-500t}

0 = -1000C_1e^{-1000(0)}-500C_2e^{-500(0)}

0 = -1000C_1-500C_2

We have a system of 2x2:

(1) 10^{-6} = C_1+C_2

(2) 0 = -1000C_1-500C_2

Solving we have:

C_1 = -10^{-6}

C_2 = 2*10^{-6}

The we can replace at the equation and we have that the Charge at any moment is given by,

Q(t) = (-10^{-6})e^{-1000t}+( 2*10^{-6})e^{-500t}

If we obtain the derivate we find also the Current, then

I(t)= 10^{-3}e^{-1000t}-10^{-3}e^{-500t}

7 0
3 years ago
When balanced forces act on an object, what type of motion can the object have?
Lesechka [4]

Answer: A. It can only be motionless.

Explanation: When balanced forces act on an object, the object will not move. The only way that object can move is if the forces become unbalanced. Suppose there is a shoe on a table. You are pulling back on the shoe with a force of 3 newtons. But the friction from the shoe rubbing on the table is also 3 newtons of force. But the gravity pulling down on the shoe is also 3 newtons. Nothing will move. The only way the shoe can move is if you pulled with a little more force. The shoe would then move because the force you are pulling with is greater than the other forces acting on the shoe.

Ex 2: You are playing tug of war. Team a is pulling with 20 Newtons of force. Team b is also pulling with 20 newtons of force. The rope does not move. Team a starts to pull a little harder. Now they are pulling with 25 Newtons of force. Now the rope starts moving their way.

8 0
3 years ago
Why is a compound as common as water considered a "weird" chemical substance?
vodka [1.7K]
There are many many fascinating things about water that make it different than any other chemical substance. For example, it is the only known compound whose solid state is less dense than it's liquid state. It also has hydrogen bonding which gives water many "weird" properties. Many chemistry teachers revolve their entire class around the properties of water.
5 0
3 years ago
The value of the normal force exerted on a 2,000 gram block on a table
kobusy [5.1K]

Answer:

N = 19.6 N

Explanation:

Given that,

Mass of a block, m = 2000 g

1 kg = 1000 g

It means, 2000 g = 2kg

We need to find the value of normal force on the block on a table. Normal force is balanced by the weight of the block as follows :

N = mg, g is acceleration due to gravity

N = 2 kg × 9.8 m/s²

N = 19.6 N

So, the normal force acting on the block is 19.6 N.

4 0
3 years ago
Other questions:
  • What is the kinetic energy of a car of 1500 kg moving 25 m/s?
    8·1 answer
  • You are in a rocket moving away from Earth at one-third the speed of light relative to Earth. A friend is on Earth, and an astro
    5·1 answer
  • Which system receives and sends electrical signals through out the body?
    6·1 answer
  • Does partial reflection and refraction occur when light travels from a slow to fast medium? Explain.
    8·1 answer
  • If two objects collide and one is initially at rest, is it possible for both to be at rest after the collision? Is it possible f
    7·1 answer
  • How many degrees does the earth rotate every 24 hours?
    10·1 answer
  • if the mass of a material is 50 grams and the volume of the material is 15 cm^3 what would the density of the material be?
    5·1 answer
  • According to newtons first law of motion a moving object that is not acted on by an unbalanced force will __________?
    9·1 answer
  • Company A has an internal cost of capital of 7% annually. It is evaluating its investment options against its internal costs and
    10·1 answer
  • This is a spiral galaxy. The material of this galaxy is concentrated in the disk. The disk is rotating. If it moved fast enough
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!