what is the need of force in our life​

The instantaneous current at the same moment in the RL circuit can be expressed as I = Imaxsin(150), where Imax represents the maximum current.

1. Given that the instantaneous voltage at a specific moment in the RL circuit is V = Vmaxsin(150).

2. We can express the current at the same moment using Ohm's Law, which states that V = IR, where V is voltage, I is current, and R is resistance.

3. In an RL circuit, the resistance is represented by the symbol R, and it is typically associated with the resistance of the wire or any resistors in the circuit.

4. However, the given equation does not explicitly mention resistance.

5. Since we are considering an RL circuit, it suggests the presence of inductance (L) along with resistance (R).

6. In an RL circuit, the voltage across the inductor (VL) can be expressed as VL = L(di/dt), where L is the inductance and di/dt represents the rate of change of current.

7. At any given instant, the total voltage across the circuit (V) can be expressed as the sum of the voltage across the resistor (VR) and the voltage across the inductor (VL).

8. Therefore, V = VR + VL.

9. Since the given equation represents the instantaneous voltage (V), we can deduce that V = VR.

10. By comparing V = VR with Ohm's Law (V = IR), we can conclude that I = Imaxsin(150), where Imax represents the maximum current.

The specific values of Vmax, Imax, and the phase angle have not been provided in the question, so we are working with the general expression.

For more such questions on current, click on:

https://brainly.com/question/1100341

#SPJ8

a) The angle θ1 which the righthand cable makes with respect to the ceiling is  sin^(-1)(692 N / 530 N).

b) The angle θ2 which the left-hand cable makes with respect to the ceiling is  sin^(-1)(692 N / 570 N).

We may utilise the tension of the right-hand cable as well as its vertical and horizontal components to determine the angle 1. θ2 = sin^(-1)(692 N / 570 N).

We may apply the ideas of trigonometry and vector addition to address this issue.

a) The tension of the right-hand wire as well as its vertical and horizontal components can be used to determine the angle 1.

T1sin(1) calculates the vertical component of the right-hand cable's tension, which is equal to the object's weight (692 N).

T1sin(θ1) = 692 N

We may rearrange the equation to find 1:

θ1 = sin^(-1)(692 N / T1)

We can find 1 by substituting the given tension value, T1 = 530 N:

θ1 = sin^(-1)(692 N / 530 N)

b) Similarly, we can use the formula to determine the angle 2 the left-hand cable's tension and its vertical and horizontal components.

The vertical component of the left-hand cable's tension is given by T2sin(θ2), and it should also be equal to the weight of the object (692 N).

T2sin(θ2) = 692 N

To find θ2, we can rearrange the equation:

θ2 = sin^(-1)(692 N / T2)

Substituting the given tension value T2 = 570 N, we can solve for θ2:

θ2 = sin^(-1)(692 N / 570 N)

Calculating these angles using the given tension values will provide the answers in degrees.

For more question on tension

https://brainly.com/question/24994188

#SPJ11

Answer:

  c)  480 mL

Explanation:

16 fluid ounces is 473.176473 mL exactly. The closest answer choice is ...

  480 mL

_____

1 gallon = 128 fl oz = 3.785411784 liters exactly

a. There are two main types of pluralism: cultural and political

b. Yes, the United States is becoming more pluralistic

c. Ethnic enclaves can be both a positive and negative aspect of pluralism in the US.

a. Pluralism refers to the coexistence of multiple cultures, religions, and ethnicities within a society. There are two main types of pluralism: cultural and political. Cultural pluralism emphasizes the preservation of distinct cultural traditions, while political pluralism emphasizes the equal representation of different groups within the political system.

Cultural pluralism is often associated with the idea of multiculturalism, which recognizes and celebrates the diversity of different cultures. This type of pluralism acknowledges the importance of cultural differences and encourages individuals to maintain and express their cultural identities. In contrast, political pluralism emphasizes the importance of equal representation of different groups within the political system. This can take the form of proportional representation in government or equal access to political power for different groups.

b. The United States is becoming more pluralistic, as the population becomes more diverse and the importance of multiculturalism and political pluralism is increasingly recognized. The country is home to many different ethnic and cultural groups, and these groups are increasingly visible in politics and society. This is evident in the increasing number of ethnic and cultural enclaves, which are areas where different ethnic groups live in close proximity to one another.

c. Ethnic enclaves can be both a positive and negative aspect of pluralism in the US. On the one hand, they allow individuals to maintain their cultural traditions and create supportive communities. On the other hand, they can also lead to segregation and exclusion, as different groups may be reluctant to interact with one another. In order to promote a positive form of pluralism, it is important to encourage interaction and understanding between different groups, while also respecting and celebrating their distinct cultural identities.

Know more about Culture here :

https://brainly.com/question/18919497

#SPJ11

To perform a drug lookup to ensure that the new compound has been added to the computer system properly we have to select the new from the toolbar at the top of the screen

A computer system is a collection of computers, related hardware, and related software. The central processing unit (CPU), memory, input/output, and storage devices are the four main components of a computer system. To produce the desired result, all of these parts operate in concert as a single unit.

Selecting the new from the toolbar at the top of the screen will allow us to run a drug lookup to make sure the new compound has been properly added to the computer system.

Therefore the correct answer is the option C

Learn more about the computer system here

https://brainly.com/question/2612067

#SPJ1

The mass of Car B is -6000 kg.

To solve this problem, we can apply the principle of conservation of momentum, which states that the total momentum before the collision is equal to the total momentum after the collision.

Therefore, we can write the equation for the conservation of momentum as:

(mass of Car A * velocity of Car A) + (mass of Car B * velocity of Car B) = (mass of Car A + mass of Car B) * velocity after collision

Let's substitute the given values into the equation:

(2000 kg * 10 m/s) + (mass of Car B * 0 m/s) = (2000 kg + mass of Car B) * (-5 m/s)

Simplifying the equation:

20000 kg*m/s = -5 m/s * (2000 kg + mass of Car B)

Dividing both sides by -5 m/s:

-4000 kg = 2000 kg + mass of Car B

Subtracting 2000 kg from both sides:

mass of Car B = -4000 kg - 2000 kg

mass of Car B = -6000 kg

know more about momentum here:

https://brainly.com/question/30487676

#SPJ8

Answer:

1 > X

Explanation:

8 > 3x + 5

-5 - 5

---------------

3 > 3x

3÷3=1

larong pinoy

Explanation:

ito ay larong Pinoy

Pretty sure answer is B

due to the fact your exerting extra force down on the lawn mower to move it

The work done by the force on the block is approximately 311.2 Joules.

To calculate the work done by the constant force of magnitude F = 45 N over a distance of 8 m at an angle of 30 degrees to the horizontal, we need to find the component of the force that acts parallel to the displacement.

The horizontal component of the force can be calculated using trigonometry:

F_horizontal = F * cos(angle)

            = 45 N * cos(30 degrees)

            = 45 N * (√3 / 2)

            ≈ 38.9 N

Now, we can calculate the work done by the force using the equation:

Work = Force * Distance * cos(theta)

where theta is the angle between the force and the displacement.

Work = F_horizontal * Distance * cos(0)

     = 38.9 N * 8 m * cos(0)

     = 38.9 N * 8 m

     = 311.2 Joules

For such more questions on force

https://brainly.com/question/26553026

#SPJ8

Answer:$0.1125

Explanation:

power=750 watts

Power=750/1000=0.75 kilowatts

$0.15 for 1 kilowatts-hour

$h for 0.75 kilowatts-hour

$h=(0.75 x 0.15)

$h=$0.1125

Answer: 0.23

Explanation:

this is the correct answer on edg

Answer:

im pretty sure its D

Explanation:

Answer:

D

Explanation:

Heat will flow from object B to object A

4.44×\(10^{9}\) kg/s is the rate at which the sun mass is decreasing.

The Sun radiates energy through a process called nuclear fusion, where hydrogen atoms combine to form helium, releasing a tremendous amount of energy in the process. According to Einstein's mass-energy equivalence principle (E=mc²), this energy release corresponds to a decrease in mass.

To calculate the rate at which the Sun's mass is decreasing, we can use the formula ΔE = Δmc², where ΔE is the change in energy, Δm is the change in mass, and c is the speed of light.

Given that the Sun radiates energy at a rate of 4×10^26 W, we can substitute this value into the equation as ΔE and solve for Δm.

ΔE = 4×10^26 W

c = 3×10^8 m/s (speed of light)

Using the equation ΔE = Δmc² and rearranging it, we get Δm = ΔE / c².

Substituting the values, we have:

Δm = (4×10^26 W) / (3×10^8 m/s)²

Evaluating this expression, we find that the rate at which the Sun's mass is decreasing is approximately 4.44×10^9 kg/s.

This calculation demonstrates that the Sun's mass is gradually decreasing as it continuously radiates energy into space, primarily through the process of nuclear fusion in its core.

Know more about Einstein's mass-energy equivalence principle here:
https://brainly.com/question/3171044

#SPJ8

Answer:

because

Explanation:

ok just because

Given d=18 cm, d, = -6 cm and h = 3 cm. the focal length of this mirror is -9 cm and it's concave mirror. hᵢ = 1 cm

By using formula

1/f = 1/d₀ + 1/dᵢ

where f is the focal length, d₀ is the object distance, and dᵢ is the image distance.

Given:

d₀ = 18 cm (object distance)

dᵢ = -6 cm (image distance, negative sign indicates a real image formed on the same side as the object)

h = 3 cm (object height)

Let's calculate the focal length:

1/f = 1/d₀ + 1/dᵢ

1/f = 1/18 + 1/-6

1/f = (1 - 3)/18

1/f = -2/18

f = -9 cm

The negative focal length indicates a concave mirror

Now, let's calculate hᵢ (the image height) using the magnification formula:

hᵢ/h = -dᵢ/d₀

hᵢ/3 = -(-6)/18

hᵢ/3 = 1/3

hᵢ = 1 cm

To know more about Concave mirror :

https://brainly.com/question/31379461

#SPJ1.

the area bounded by the line and the axes of a velocity-time graph is equal to the displacement of an object during that particular time period

Thank you

The area between the line and the x axis represent on a velocity vs time graph is the displacement.

The area under velocity-time graph is known as displacement.

In velocity-time graph, the y-axis represents the velocity axis while the x-axis represents the time axis.

Velocity is defined as the change in displacement per change in time.

\(v = \frac{dx}{dt}\)

where;

The integration of the velocity gives the area under the curve and that will be equal to the displacement.

\(\int\limits^a_b {v} \, dt = x\)

Thus, the area between the line and the x axis represent on a velocity vs time graph is the displacement.

Learn more here:https://brainly.com/question/11068620

Answer:

If a ray of light hits the surface of a sheet of glass, some light will be reflected by the surface of the glass. However, much of the light will pass through the glass, because glass is transparent. ... This 'bending of a ray of light' when it passes from one substance into another substance is called refraction.

Explanation:

If we rearrange the circuit so that the inductor and capacitor were connected in series,the impedance would be  Decreased and the resonant frequency would be unchanged.

Frequency is the rate at which something occurs over a particular period of time or in a given sample.

Sol-An LC circuit is made up of an inductor (L) and a capacitor (C). At the resonance condition of the LC circuit, the inductive reactance XL. becomes equal to the capacitive reactance Xc.

It is defined as-

XL= 2πfL

Xc= 1/2πfC

So when reactances are equal we have-

XL=Xc

2πfL= 1/2πfC

f^2=1/4π^2LC

f=1/2π√LC

The resonance condition is the same for both the parallel and series LC circuit, so the resonance frequency will not change.

The impedance of a parallel LC circuit is:

Z(w)= jL w^2-w^2•/w

In a series LC circuit, when w

, the impedance becomes equal to 0.

Therefore the impedance of a series LC circuit will decrease and the resonant frequency will remain the same.

To know more about frequency click-

https://brainly.com/question/254161

#SPJ1

Answer:

\(\displaystyle \sqrt{\frac{(5/2)\, (g - a)\, m\, R^{2}}{M^{2}\, a}}\), assuming that the tension in the rope is the only tangential force on the sphere (\(g\) denote the gravitational acceleration.)

Explanation:

The forces on the bucket are:

Since the weight of the bucket and the tension from the rope are in opposite directions, the magnitude of the net force would be:

\(\begin{aligned} \|\text{Net Force}\| =\; & \|\text{Weight}\| - \|\text{Tension}\| \end{aligned}\).

The upward tension in the rope prevents the bucket from accelerating at \(g\) (free fall.) Rather, the bucket is accelerating at an acceleration of only \(a\). The net force on the bucket would be thus \(m\, a\).

Rearrange the equation for the net force on the bucket to find the magnitude of the tension in the rope would be:

\(\begin{aligned} & \|\text{Tension}\| \\ =\; & \|\text{Weight}\| - \|\text{Net Force}\| \\ =\; & m\, g - m\, a \\ =\; & (g - a)\, m\end{aligned}\).

At a distance of \(R\) from the center of the sphere, the tension in the rope \((g - a)\, m\) would exert a torque of \((g - a)\, m\, R\) on the sphere. If this tension is the only tangential force on this sphere, the net torque on the sphere would be \((g - a)\, m\, R\!\).

Let \(M\) denote the mass of this sphere. The moment of inertia of this filled sphere would be \(I = (2/5)\, M^{2}\).

Therefore, the magnitude of the angular acceleration of this sphere would be:

\(\begin{aligned}& \|\text{Angular Acceleration}\| \\ =\; & \frac{\|\text{Net Torque}\|}{(\text{Moment of Inertia})} \\ =\; & \frac{(g - a)\, m\, R}{(2/5)\, M^{2}} \end{aligned}\).

The bucket is accelerating at a magnutide of \(a\) downwards. The rope around the sphere need to unroll at an acceleration of the same magnitude, \(a\!\). The tangential acceleration of the sphere at the surface would also need to be \(\! a\).

Since the surface of the sphere is at a distance of \(R\) from the center, the angular acceleration of this sphere would be \((a / R)\).

Hence the equation:

\(\begin{aligned}& \frac{(g - a)\, m\, R^{2}}{(2/5)\, M^{2}} = \|\text{Angular Acceleration}\| = \frac{a}{R} \end{aligned}\).

Solve this equation for \(M\), the mass of this sphere:

\(\begin{aligned}& \frac{(g - a)\, m\, R^{2}}{(2/5)\, M^{2}} = \frac{a}{R} \end{aligned}\).

\(\begin{aligned}M^{2} &= \frac{(g - a)\, m\, R^{2}}{(2/5)\, a} \\ &= \frac{(5/2)\, (g - a)\, m\, R^{2}}{a}\end{aligned}\).

\(\begin{aligned}M&= \sqrt{\frac{(5/2)\, (g - a)\, m\, R^{2}}{a}}\end{aligned}\).

A crow flies forward and backward. Its motion is shown on the following graph of horizontal position x vs. time t.

What is the instantaneous velocity of the crow at t = 9 s?

Answer: -0.50 m/s

A crow flies forward and backward. Its motion is shown in the following graph and the instantaneous velocity of the crow at t = 9 s is -0.5 m/s.

From the figure, it shows that from t = 8sec to t = 12 sec the displacement is decreasing, so velocity will be the slope of the straight line.

The velocity is given by:

velocity = -Δx ÷ Δt

velocity = (-2) ÷ (12-8)

velocity = -2 ÷ 4

velocity = -0.5 m/s

Therefore, A crow flies forward and backward. Its motion is shown in the following graph and the instantaneous velocity of the crow at t = 9 s is -0.5 m/s.

To know more about the instantaneous velocity:

https://brainly.com/question/14365341

#SPJ5

Below are the required answers and explanations for each of the scenarios listed.

1. A machine that pulls all thermal energy out of a refrigerated space: This violates the second law of thermodynamics. This is because the second law of thermodynamics states that no heat engine can have an efficiency of 100 percent, and no heat transfer can occur from a colder to a warmer object without external work being done.

2. A machine that can pull 1000J of heat out of a refrigerated space and into a warmer space without external work: This violates the second law of thermodynamics. The second law of thermodynamics states that no heat transfer can occur from a colder to a warmer object without external work being done.

3. A machine that can turn 1000J of heat directly into 1000J of electricity: This does not violate any of the laws of thermodynamics.

4. A machine that can create 1000J of heat from 100J of electricity: This does not violate any of the laws of thermodynamics.

5. A machine that can pull 1000J of heat out of a refrigerated space and put 1500J of heat into a warmer space if it uses 500J of external work: This does not violate any of the laws of thermodynamics.

a) Option 2 is correct answer.

b) Option  2 is correct answer.

c) Option 4 is correct answer.

d) Option 4 is correct answer

e) Option 4 is correct answer.

For more question  thermodynamics

https://brainly.com/question/13059309

#SPJ8

The angle of reflection is the angle between the reflected ray and the normal to the surface

The angle of reflection is the angle made by the reflected ray with the surface, measured relative to the normal, and is equal to the angle of incidence, which is the angle between the incident ray and the normal.

The angle of reflection can be determined using the law of reflection, which states that the angle of incidence is equal to the angle of reflection. This law applies to the reflection of light, sound, and other waves from a smooth, flat surface, such as a mirror or a still body of water.

Learn more about reflected ray:https://brainly.com/question/3764651

#SPJ1

Answer:

q₂ = 11.9988 C ,  q₁ = 0.0012 C

Explanation:

For this exercise we will use Coulomb's law

     F = K q₁q₂ / r²

They indicate that the sum of the charges is

        q₁ + q₂ = 12

the force between them for r = 4 m is F = 8 10⁻³ N

       q₁q₂ = F r² / K

       q₁q₂ = 8 10⁻³ 4² / 8.99 10⁹

        q₁q₂ = 14.24 10⁻¹²

substitute we write our system of equations

       q₁ + q₂ = 12

        q₁q₂ = 14.24 10⁻¹²

This system has two equations and two unknowns so it can be solved, let's solve in the first equation and substitute in the second

       (12- q₂) q₂ = 14.24 10⁻¹²

         12q₂ - q₂² - 14.24 10⁻¹² = 0

         q₂² - 12 q₂ +14.24 10⁻¹² = 0

we solve the quadratic equation

         q₂ = [12 ±√ (12² - 4 14,24 10⁻¹²)] / 2

         q₂ = [12 ± 11,9999999] / 2

the two solutions are

      q2 = 11,9999999997  C

     q2 = 0.000000003

we substitute in the other equation to find the other charge

    q₁ + q₂ = 12

     q₁ = 12- q₂

     q₁ = 0.000000003 C

this value is very small, I think the value of the force is wrong, if the force is F = 8 10⁶ N

       q₁q₂ = 14.24 10⁻³

the quadratic equation is

       q₂² - 12 q₂ + 14.24 10⁻³ = 0

the solution is

       q₂ = [12 ±√ (12² - 4 14,24 10⁻³)] / 2

        q2 = [12 ±√ (143,940)] / 2

         q2 = [12 ± 11,9975] / 2

 the two results are

         q₂ = 11.9988  C

          q₂ = 0.0025  C

as in the problem it indicates that q1 is smaller the correct answer is

q₂ = 11.9988 C

     q₁ = 12-q₂

     q₁ = 0.0012 C

The acceleration of the dragster is 2.01 * 10^5 m/s^2

The term acceleration refers to the change in velocity with time. Hence the formula for acceleration is given as;

a = v - u/t

a = acceleration

v = final velocity

u = initial velocity

t = time taken

Now;

v = 100 miles or 160934 meters

u = 0 miles or 0 meters

t = 0.8 seconds

a =  160934 - 0/ 0.8

a = 2.01 * 10^5 m/s^2

Learn more about acceleration:https://brainly.com/question/12550364

#SPJ1

Answer:

they are prob really curious its new to them

Explanation:

this is most likely not right but ia m a freash man so whatever

Answer:

Below

Explanation:

At 0    ( or between 30 N and 30 S)    

   they travel the largest circle circumference in a 24 hour day rotation