An electrical device with a resistance of 100 allows a current of 2A to flow through it what is the voltage drop across the device

Answer:

B.  10 m

Explanation:

f = v/λ = (20 m/s)λ / (5 m) = 4 Hz    original frequency

1/2(4 Hz) = 2 Hz   half the original frequency

(20 m/s) / λ = 2 Hz

λ = (20 m/s) / (2 Hz) = 10 m

The second wavelength would increase to 10 m

The system described by the transfer function G(s) = -co² s² + 2a + w², with a damping ratio of 1.3 and a natural frequency of 0.5, has an overdamped unit step response. So, the correct option is (E)

The transfer function of the system is given as G(s) = -co² s² + 2a + w², where co represents the damping ratio, a represents an arbitrary constant, and w represents the natural frequency of the system. We are given that the natural frequency is 0.5 and the damping ratio is 1.3.

To determine the type of unit step response, we need to analyze the damping ratio (co) in relation to the critical damping value (co_critical).

The critical damping ratio (co_critical) is defined as the value where the system is on the threshold between being overdamped and underdamped. It is given by the formula co_critical = 2 * sqrt(a * w²).

In our case, the natural frequency (w) is 0.5, so we can calculate co_critical as follows: co_critical = 2 * sqrt(a * 0.5²).

Since the damping ratio (co) is given as 1.3, we can compare it with co_critical to determine the type of unit step response.

If co > co_critical, the system is considered overdamped (Option E).

If co = co_critical, the system is considered critically damped (Option D).

If co < co_critical, the system is considered underdamped (Option C).

Based on the given values, we can determine that the system is overdamped (Option E) because the damping ratio (1.3) is greater than the critical damping ratio.

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Answer:

a. V = (a - b)d/2ε₀ b. 2ε₀A/d

Explanation:

a. The potential difference between the plates

Using Gauss' law, we first find the electric field between the plates

ε₀∫E.dA = Q where Q = charge enclosed, E = electric field

Now Q = [a +(-b)]A = (a - b)A where + a and -b are the surface charge densities of the plates and A is the area of the plates.

ε₀∫E.dA = Q

ε₀∫EdAcos0 + ε₀∫EdAcos0 = (a - b)A

ε₀E∫dA + ε₀E∫dA = (a -b)A

ε₀EA + ε₀EA = (a -b)A

2ε₀EA = (a -b)A

E = (a - b)/2ε₀

We now find the potential difference, V between the plates from

V = ∫E.dl

V =E∫dl

V = Ed  where ∫dl = d the distance between the plates.

V = (a - b)d/2ε₀

b. The capacitance between them

Capacitance C = Q/V

= (a - b)A ÷ (a - b)d/2ε₀

= 2ε₀A/d

Answer:

\(P=40 \ W\)

Conceptual:

\(\boxed{\left\begin{array}{ccc}\text{\underline{Equations for Work:}}\\W=F \Delta rcos(\theta) \ \text{(Constant} \ \vec F) \\W= \int\limits^{r_2}_{r_1} {Fcos(\theta)} \, dr \ \text{(Varible} \ \vec F) \end{array}\right }\)

The angle "θ" is the angle between the force applied and the direction of displacement.

\(\boxed{\left\begin{array}{ccc}\text{\underline{Formula for Power:}}\\\\P=\frac{W}{t} \end{array}\right}\)

Explanation:

Given that an engine does 400 J of work in 10 seconds. Find the power of the engine.

\(W=400 \ J\\t=10 \ s\)

Plug these values into the formula for power.

\(P=\frac{W}{t} \\\\\Longrightarrow P=\frac{400}{10}\\\\\therefore \boxed{P=40 \ W}\)

Thus, the engines power is calculated.

The separation between two places of the an object in motion is known as displacement.Therefore, it depends on both the starting position and the ending position.Displacement is also the shortest distance between the initial and ultimate places.

We may determine the overall distance traveled from t = a to t = b by a body with location function s (t) when it moves along a coordinates line without changing direction.To get the overall distance traveled if the body changes course more than once throughout the journey, we must integrate the body's velocity |v (t)|.

Greek prefixes are applied to units bigger than meters:A dekameter was 10 meters; the prefix deka- indicates "ten."Hectometers measure distances in units of 100 meters.A km is 1,000 meters, and the prefix kilo- denotes 1,000.

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Explanation:

Weight=force=300N

height=2m

time=6seconds

power=?

now,

power (p)=f×h÷t

power=300×2÷6

power=100w

therefore,A man develops 100 watt power in 6 seconds.

Answer:

the name of the SI unit for force is the newton

Answer:

newton

Explanation:

don't have explanation

but I know this is the answer

\(\\ \tt\longmapsto Momentum=mv\)

\(\\ \tt\longmapsto Momentum=(40)(33)\)

\(\\ \tt\longmapsto Momentum=1320kgm/s\)

\(\large{\purple{\underline{\underline{\sf{\pink{ANSWER-}}}}}}\)

Let us classify the given data first,

The standard way for calculating momentum of a body is given by,

\(\Rrightarrow\tt{Momentum = mass \times velocity}\)

\(\Rrightarrow\tt{Momentum = m \times v}\)

\(\Rrightarrow\tt{Momentum = 40 \times 33}\)

\(\Rrightarrow\tt{Momentum = 1320 kgm/s}\)

\(\large{\purple{\underline{\underline{\sf{\pink{MORE \: CONCEPTS \: TO \: LEARN-}}}}}}\)

1) MOMENTUM (P) -

2) MASS (M) -

3) VELOCITY (V) -

ans. option (d) is correct

Angle of Dip (magnetic inclination), angle of declination and horizontal component of earth's magnetic field BH, are enough to determine the intensity of earth's magnetic field completely, hence they are magnetic elements of earth, vertical component of earth's magnetic field BV is not a earth's magnetic element.

To calculate the time of flight, angle of projection, and range attained, we can use equations of projectile motion. Given the initial velocity and maximum height, we can determine these values using relevant formulas.

To calculate the time of flight, angle of projection, and range attained by a stone propelled from a catapult, we can use the equations of projectile motion.

Given:

Initial velocity (u) = 50 m/s

Maximum height (h) = 100 m

Acceleration due to gravity (g) = 9.8 m/s² (assuming no air resistance)

Time of Flight:

The time of flight is the total time taken by the stone to reach its highest point and return to the same height. The formula to calculate the time of flight is:

Time of Flight (T) = 2 * (u * sin(θ)) / g

Angle of Projection:

The angle of projection refers to the angle at which the stone is launched from the catapult. The formula to calculate the angle of projection is:

Angle of Projection (θ) = arcsin((h * g) / (u²))

Range:

The range is the horizontal distance covered by the stone during its flight. The formula to calculate the range is:

Range = (u² * sin(2θ)) / g

Let's calculate these values:

Time of Flight:

T = 2 * (50 * sin(θ)) / 9.8

Angle of Projection:

θ = arcsin((100 * 9.8) / (50²))

Range:

Range = (50² * sin(2θ)) / 9.8

Please note that to accurately calculate the angle of projection and range, we need the value of θ, which can be obtained from the equation mentioned in step 2.

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The complete question is :

A small ball carrying a charge of -3.0x10^(-12) C experiences an eastward force of 8.0x10^(-6) N due to its charge when it is suspended at a certain point in space. We need to determine the magnitude and direction of the electric field at that point.

Answer:

Yes.

Explanation:

Yes, we emphasize performance over participation of kids in a competition which causes negative effect on kid's personality. We also prefer those children whose families can afford the fees which is our big failure. We should  emphasize participation over performance and prefer those child who has the ability to win the game instead of those who can afford the fees.

Question 1.

now, we know :

=》

\(p.e = mgh\)

=》

\(67500 = 4500 \times 10 \times h\)

=》

\(67500 = 45000 \times h\)

=》

\(h = \dfrac{67500}{45000} \)

=》

\(h = 1.5 \: m\)

note : if we take acceleration due to gravity as 9.8, then height = 1.53 m

Question 2.

we know,

=》

\(k.e = \dfrac{1}{2} mv {}^{2} \)

=》

\(63000 = \dfrac{1}{2} \times 4500 \times {v}^{2} \)

=》

\( {v}^{2} = \dfrac{63000 \times 2}{4500} \)

=》

\( {v}^{2} = 28\)

=》

\(v = \sqrt{28} \)

=》

\(v = 2 \sqrt{7} \: \: ms {}^{ - 1} \)

or

=》

\(5.29 \: \: ms {}^{ - 1} \)

Answer:

I think it will back towards the earth because earth gravitional field will attract to Wards

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Actually Welcome to the Concept of the Current Electricity .

Since we know that, Current is Charge per unit time.

so we get as,

Q = I*t

here, Q = charge, I = current, t = time.

Answer: c. The electric force increases

Explanation:

If the distance between two charged particles decreases, the electric force between them increases.

According to Coulomb's Law, the electric force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. Mathematically, the equation can be represented as:

F = k * (q1 * q2) / r^2

Where:

F represents the electric force between the particles.

k is the electrostatic constant.

q1 and q2 are the charges of the particles.

r is the distance between the particles.

As the distance (r) between the particles decreases, the denominator of the equation (r^2) becomes smaller, causing the overall electric force (F) to increase. Conversely, if the distance between the charged particles increases, the electric force between them decreases. This inverse relationship between the distance and electric force is a fundamental characteristic of the electrostatic interaction between charged objects.

Answer:

the is answer condensation

Explanation:

I say condensation because it's like a gas

A chemical reaction has occurred if for each combination any of the following is observed:

In a chemical reaction, one or more reactants are changed into one or more products, which are then changed back into one or more reactants.

Chemical elements or chemical compounds make up substances. In a chemical reaction, the atoms that make up the reactants are rearranged to produce various products.

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Answer:

1.It allows for movement.

2.t controls the breathing rate.

4. It controls the heart rate.

Explanation:

Air that is not saturated will cool or heat at a rate of 10 degrees C/1000 meters as it rises or descends, respectively

The rate of the change in temperature which is observed while moving upward in the earth's atmosphere with elevation. It can be positive, negative and zero when the temperature decreases, increases or is constant with the elevation respectively.

For the atmosphere, the drop in temperature of rising air that is  unsaturated air is about 10 degrees C/1000 meters (5.5 °F per 1000 feet) altitude.

That means if a there occur a rise of 1000 m , then the temperature of that thing will decrease to 10 degrees. Every 10°C of temperature from the given temperature will decrease at every rise of 1000 m .Air that is not saturated will cool or heat at a rate of 10 degrees C/1000 meters as it rises or descends, respectively

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Answer: tug vi

Explanation:

Because

Answer:

\(50\:\mathrm{m\: North}\\50\sqrt{3}\:\mathrm{m\: East}\)

Explanation:

We can create a 30-60-90 triangle. The distance she walked is then the hypotenuse of the triangle, and using 30-60-90 triangle rules, we have the following:

The North leg is opposite to the \(30^{\circ}\) angle. Therefore, if we call this distance \(y_N\), we have the following:

\(\sin 30^{\circ}=\frac{y_N}{100},\\\frac{1}{2}=\frac{y_N}{100},\\y_N=\fbox{$50\:\mathrm{m}$}\).

The East leg is opposite to the \(60^{\circ}\\\) angle. If we call this distance \(x_E\), we have:

\(\sin 60^{\circ}=\frac{x_E}{100},\\\frac{\sqrt{3}}{2}=\frac{x_E}{100},\\x_E=\fbox{$50\sqrt{3}\:\mathrm{m}$}\).

This question can be solved using the concept of friction energy.

The thermal energy change is b "258.4 J".

The change in thermal energy will be equal to the friction energy produced during the motion of the box.

\(Change\ In\ Thermal\ Energy = E = Friction\ Energy\\\\E = \mu fd\)

where,

μ = coefficient of kinetic friction = 0.4

f = force applied = 38 N

d = distance traveled by the box = 17 m

Therefore,

\(E = (0.4)(38\ N)(17\ m)\)

E = 258.4 J

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Answer:

sound energy and electricity energy

Answer: A. An ice hockey player picks up a trophy as he slides past it

Explanation:

A PE X

The statement that best describes a perfectly inelastic collision is

C. A surfer falls off of his surfboard when a wave hits him.

A collision is the interaction between two bodies in such a way that the momentum and velocity of one body gets changed due to the presence of other body. There are three types of collision-

1. Elastic collision

2. Inelastic collision

3. Perfectly inelastic collision.

In all types of collision , the momentum of the system before collision and after collision always remains same or we can say that momentum is conserved in collisions

An elastic collision is the one in which kinetic energy is also conserved and coefficient of restitution is one. Both the bodies move separately with different velocities after elastic collision.

In inelastic collision  there is a loss of kinetic energy and coefficient of restitution is less than one.

In perfectly inelastic collision there is maximum loss of kinetic energy and coefficient of restitution is zero. Both the bodies stick together after collision and move with same velocity

Coefficient of restitution is the  ratio of  relative velocity of separation after collision to relative velocity of approach before collision.

A surfer falls of his surfboard when a wave hits him is an example of perfectly inelastic collision because in this when water hits the surfers he falls of and sticks to the water , and will also now move with the velocity of water .

So  when the surfer falls off his surfboard when a wave hits him is perfectly inelastic collision.

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Let's rank these objects in order of decreasing kinetic energy:

The kinetic energy of an object is given by the formula:

K.E. = (1/2) * mass * velocity^2

Given that all three objects have the same momentum, we know that:

momentum = mass * velocity

Rearranging the equation, we get:

velocity = momentum / mass

Now we can substitute this expression for velocity into the equation for kinetic energy:

K.E. = (1/2) * mass * (momentum / mass)^2

Simplifying, we get:

K.E. = (1/2) * momentum^2 / mass

Therefore, the kinetic energy of an object depends on the square of its momentum and inversely on its mass.

Using this formula, we can compare the kinetic energies of the three objects:

Object B has the largest mass, so it will have the smallest kinetic energy:

K.E. (B) = (1/2) * momentum^2 / (2m) = momentum^2 / (4m)

Object A has a mass of m, so its kinetic energy will be greater than that of object B:

K.E. (A) = (1/2) * momentum^2 / m = momentum^2 / (2m)

Object C has the smallest mass of the three, so it will have the largest kinetic energy:

K.E. (C) = (1/2) * momentum^2 / (m/2) = 2 * momentum^2 / m

Therefore, the objects ranked in order of decreasing kinetic energy are:

C > A > B

Object C has the highest kinetic energy, followed by object A, and object B has the lowest kinetic energy.

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Answer:

lithosphere

Explanation:

the least densest layer is the outer most layer

the densest layer is the inner most layer and the inner most layer is the inner core

Answer:

lithosphere

Explanation:

i took the test and i got it right

Gravity depends on the mass of objects and distance.

The more mass the more gravitational force, the more distance between two objects the less gravitational force.