The plates have (20%) Problem 3: Two metal plates form a capacitor. Both plates have the dimensions L a distance between them of d 0.1 m, and are parallel to each other. 0.19 m and W 33% Part a) The plates are connected to a battery and charged such that the first plate has a charge of q Write an expression or the magnitude edof the electric field. E, halfway between the plates. ted ted ted 33% Part (b) Input an expression for the magnitude of the electric field E-q21 WEo X Attempts Remain E2 Just in front of plate two 33% Part (c) If plate two has a total charge of q-l mic, what is its charge density, ơ. n Cim2? Grade Summary ơ-1-0.023 Potential 96% cos) cotan)asin acos(O atan acotan sinh cosh)tan cotanh) . Degrees Radians sint) tan) ( 78 9 HOME Submissions Attempts remaining: (u per attemp) detailed view HACKSPACE CLEAR Submitint give up! deduction per hint.

Answer:

In a concave mirror, the image is real if the distance of the object from the mirror is greater than the focal length and virtual if it is less than the focal length. If the object is at the focus the image is formed at infinity. In a convex mirror, the image is always virtual.

Answer:

B,D,E

Explanation:

If an item with a fixed emissivity of 0.725 radiates heat at a rate of 10 w when it is at an absolute temperature of t, it will now do so at a rate of 160 W if the temperature is doubled to 2t.

Thermal radiation is produced by any item above absolute zero in temperature. However, the amount of thermal radiation emitted for any given wavelength and temperature varies on the surface emissivity of the item.

The ratio of the energy emitted from a material's surface to the energy emitted from a blackbody, a perfect emitter with the same temperature, wavelength, and viewing circumstances, is known as emissivity. It is an arbitrary number without dimensions between 0 (for an ideal reflector) and 1. (for a perfect emitter).

In addition to the material, a surface's emissivity also relies on the kind of surface. As an illustration, a polished and spotless metal surface will have a low emissivity.

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One of Newton's laws is the law of inertia, which states that an object at rest will remain at rest, and an object in motion will remain in motion unless acted upon by an external force.                                                                                                                          

Airbags and seatbelts are important in saving lives because they act as the external force that can stop the motion of an object  in the event of a collision. Without these safety measures, the body would continue to move forward at the same speed as the vehicle, causing serious injuries or even death upon impact. By quickly inflating and creating a cushion, airbags reduce the force of impact and prevent the head and chest from hitting hard surfaces inside the car. Seatbelts, on the other hand, prevent passengers from being thrown out of the car or hitting the dashboard or windshield.
Seatbelts restrain this motion, while airbags provide a cushion to reduce the impact force. Both safety features work together to prevent injuries and save lives.

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Answer:

Vy = V0 sin 38       where Vy is the initial vertical velocity

The ball will accelerate downwards (until it lands)

Note the signs involved   if Vy is positive then g must be negative

The acceleration is constant until the ball lands

t (upwards) = (0 - Vy) / -g      = Vy / g      final velocity = 0

t(downwards = (-Vy - 0) / -g = Vy / g      final velocity = -Vy

time upwards = time downwards     (conservation laws)

Answer:

dang it its so long :(

Explanation:

When a ray of light goes from one transparent material into another and bends away from the normal, we can conclude that the index of refraction of the second material is greater than the index of refraction of the first material.

From the given information, we can conclude certain characteristics about the indices of refraction of the two transparent materials.

When a ray of light passes from one transparent material into another, it undergoes refraction, which is the bending of light as it passes through the interface between two materials with different indices of refraction.

In the figure, we can observe that the incident ray of light bends away from the normal, which is an imaginary line perpendicular to the interface of the two materials. This bending of light indicates that the speed of light decreases as it enters the second material.

Based on the behavior of light at the interface, we can draw the following conclusions about the indices of refraction:

The index of refraction of the second material is greater than the index of refraction of the first material. This is because the incident ray bends away from the normal, indicating a decrease in the speed of light as it enters the second material. The greater the change in speed, the larger the difference in the indices of refraction between the two materials.

The angle of refraction, denoted by θ2 in the figure, is smaller than the angle of incidence, denoted by θ1. This relationship between the angles of incidence and refraction is governed by Snell's law, which states that n1sin(θ1) = n2sin(θ2), where n1 and n2 are the indices of refraction of the first and second materials, respectively. Since θ2 is smaller than θ1, it implies that the ratio n1/n2 is also smaller than 1, indicating that the index of refraction of the second material is greater than the index of refraction of the first material.

In summary, when a ray of light goes from one transparent material into another and bends away from the normal, we can conclude that the index of refraction of the second material is greater than the index of refraction of the first material. The angle of refraction is smaller than the angle of incidence, indicating a decrease in the speed of light as it enters the second material. These conclusions are based on the principles of refraction and Snell's law.

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The velocity of each of the two skaters is 0.04 m/s.

Velocity is the directional velocity of a moving object as an indicator of the rate of change of position observed from a particular frame of reference and measured by a particular time standard.

Mass of each skater  = 75 kg

        mass of the ball = 0.3

         velocity of ball = 5 m/s

CONCEPT: Due to momentum conservation both gain the same momentum in opposite directions

SOLUTION:  

Total momentum in both cases ( throw + return )  

                              (P)= (0.3  kg )x 5 m/s + (0.3  kg )x 5 m/s

                                   = 3 kg m/s

Momentum ( P ) = m v

The velocity of each skater

                        V = P / m

                            = ( 3 kg m/s ) / 75 kg

                             = 0.04 m/s  moving apart

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Answer:

I belive it would be the first answer choice.

Explanation:

When the Mass is lower, the ball moves faster so it would have more kintetic energy

Answer:

F=8.87 N

Explanation:

Coulomb's Law

The electrostatic force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between the two objects.

Written as a formula:

\(\displaystyle F=k\frac{q_1q_2}{d^2}\)

Where:

\(k=9\cdot 10^9\ N.m^2/c^2\)

q1, q2 = the objects' charge in coulomb

d= The distance between the objects  in meters

Object 1 has a charge of

\(q_1=-2.3\cdot 10^{-6}\ c\)

Object 2 has a charge of

\(q_2=-4.2\cdot 10^{-6}\ c\)

They are separated by a distance of

d = 0.099 m

Calculate the force:

\(\displaystyle F=9\cdot 10^9\frac{2.3\cdot 10^{-6}*4.2\cdot 10^{-6}}{0.099^2}\)

F=8.87 N

Answer:

Protista

Explanation:

Taxonomy can be defined as the process of naming, classification and description of living organisms such as plants and animals. Thus, the biological classification of living organisms based on similarities or characteristics such as eyes, number of legs, etc., is generally referred to as taxonomy.

Basically, taxonomy helps scientist to have a good understanding and knowledge when studying various organisms.

Furthermore, the eight (8) biological classification (taxonomy) used for grouping and organizing organisms are; kingdom, domain, phylum, family, order, class, species and genus.

An organism that has only one cell, big and has a nucleus is most likely a member of Protista. Thus, a Protista such as euglena, paramecium, amoeba, etc., have a nucleus and are unicellular.

A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.

Answer:

6 kg

Explanation:

p = mv

Due to the law of gravity, or gravitation, which draws all objects with mass in its vicinity toward it, Mars' gravitation is a natural occurrence.

.53 s the astronaut is in the atmosphere.

astronaut jump form .49 m.

from motion Equation : v= u + at

then we can find t = \(\frac{v-u}{a}\) = -1.88/ 3.5 = .53 sec

s = ut + ½at²

put u = 1.88 a= -3.5 and t= .53

s = .49 m

.53 s the astronaut is in the atmosphere.

astronaut jump form .49 m.

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The power rating of the resistor was exceeded by approximately -0.002W (or -2 milliwatts), but since this value is negative, it means the power dissipation was slightly below the rated power. Consequently, the resistor did not burn up because it was not subjected to excessive power.

The power rating of the heating resistor is given as 1 watt (W) and its resistance is 10 ohms (\(Ω\)). We can use the formula P = V^2/R, where P is the power, V is the voltage, and R is the resistance, to determine the voltage applied to the resistor. Rearranging the formula, we have V = sqrt(P*R).

Substituting the given values, we get \(V = sqrt(1W * 10Ω)\) = sqrt(10V^2) = 3.16V (approximately).

To find by how much the power rating was exceeded, we can calculate the actual power using the formula P = V^2/R. Substituting the known values, we have P =\((3.16V)^2/10Ω\) = 0.998W (approximately).

Therefore, the power rating was exceeded by approximately 0.998W - 1W = -0.002W (or -2 milliwatts).

The negative value indicates that the power rating was not exceeded; rather, it was slightly below the rated value. As a result, the resistor did not burn up because the power dissipated in the resistor was slightly less than the maximum power it was designed to handle. The resistor was able to safely handle the power dissipation without damage.

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Answer:

Option b is correct - Rocky, nearly continuous, found on earth surface.

The reason is it is the rocky surface area composed of crust and upper mantle part. Basically, it is the outer shell of earth.

The molar mass of a compound can be found by adding the molar masses of all of the atoms in the compound.

The molar mass of an atom can be found on the periodic table by looking at the atomic mass listed for that element.

For example, to find the molar mass of water (H2O), we would add the molar masses of two hydrogen atoms (2 x 1.01 g/mol) and one oxygen atom (16.00 g/mol) to get a total molar mass of 18.02 g/mol.

Another way is by finding the molecular formula of the compound, it can be done by analyzing the compound's chemical and physical properties and then using the mass spectrometer to determine the molecular weight.

In conclusion, the molar mass of a compound can be found by adding the molar masses of the atoms in the compound using the atomic masses listed on the periodic table, or by determining the molecular formula of the compound and using a mass spectrometer to find the molecular weight.

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Answer:

a. The total momentum of the trolleys which are at rest before the separation is zero

b. The total momentum of the trolleys after separation is zero

c. The momentum of the 2 kg trolley after separation is 12 kg·m/s

d. The momentum of the 3 kg trolley is -12 kg·m/s

e. The velocity of the 3 kg trolley = -4 m/s

Explanation:

a. The total momentum of the trolleys which are at rest before the separation is zero

b. By the principle of the conservation of linear momentum, the total momentum of the trolleys after separation = The total momentum of the trolleys before separation = 0

c. The momentum of the 2 kg trolley after separation = Mass × Velocity = 2 kg × 6 m/s = 12 kg·m/s

d. Given that the total momentum of the trolleys after separation is zero, the momentum of the 3 kg trolley is equal and opposite to the momentum of the 2 kg trolley = -12 kg·m/s

e. The momentum of the 3 kg trolley = Mass of the 3 kg Trolley × Velocity of the 3 kg trolley

∴ The momentum of the 3 kg trolley = 3 kg × Velocity of the 3 kg trolley = -12 kg·m/s

The velocity of the 3 kg trolley = -12 kg·m/s/(3 kg) = -4 m/s

a-The total momentum of the trolleys before separation=0

b.The total momentum of the trolleys after  separation=0

c. The momentum of 2kg trolley after  separation=12kg-m/sec

d. The momentum of 3kg trolley after separation=-12kg-m/sec

e. The velocity of the 3kg trolley=4kg-m/sec

Given-

Trolley A with mass= 2kg

Trolly B with mass= 3kg

Velocity of trolly A =6m/sec

A- Total momentum of the trolleys before separation-

Here, in this problem both the trolleys are in the rest position hence the momentum of both trolleys = 0

B- Total momentum of the trolleys after  separation-

We know that motion never changes in an isolated collection of objects,

hence the momentum of the trolleys before and after the separation=0

C- Momentum of the Trolley A (2kg)-

It is known that momentum= Mass x Velocity

\(P=m\times v\)

\(P=2\times 6\)

\(P=12\)

Hence, the momentum of the 2kg trolley is 12 kg-m/sec

D- Momentum of the Trolley B (3kg)-

As we know that  motion never changes in an isolated collection of an object hence the total moment of after saparation = 0

hance the momentum of the trolley B will be equal and opposite to the momentum of trolley A=

\(P= -12\)

Momentum of trolley B (3kg) is -12kg-m/sec

E- The velocity of the 3kg trolley-

The momentum of trolley A= Momentum of trolley B

\(m_{b} v_{a} =m_{b} v_{a}\)

\(-2\times 6=3\times v_{a}\)

\(v_{a}=-4\)

The value of the velocity of the 3kg trolley is -4m/sec

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The pressure decreases when the speed increases then internal pressure in a fluid flowing in a horizontal pipe its speed decreases The pressure increases when the speed decreases.

What is Pressure?

However, 101325 Pa is what it is at sea level.

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Answer: By moving heat from the equator toward the poles, ocean currents play an important role in controlling the climate. Ocean currents are also critically important to sea life.

Explanation: Plzz mark me as brainliest !!

The average force on the puck by the stick is 448 N

To find the average force on the hockey puck, we can use the impulse-momentum theorem:

Impulse = Change in momentum

The impulse on the puck can be calculated as:

Impulse = mass x change in velocity
Impulse = 0.16 kg x (9 m/s - (-5 m/s))
Impulse = 0.16 kg x 14 m/s
Impulse = 2.24 N*s

The change in velocity is negative because the puck is moving in the opposite direction after the impact.

The impulse on the puck is equal to the average force multiplied by the time of contact:

Impulse = average force x time
2.24 N*s = average force x 0.005 s
average force = 2.24 N*s / 0.005 s
average force = 448 N

Therefore, the average force is 448 N.

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Non - Metals:

Some terms:

★ Malleable: This means that metals can be beaten into thin sheets with hammer.

★ Ductile: This means that metals can be drawn into thin wires.

★ Brittle: This means that non-metal break into pieces on hammering.

★ Sonorous: This means capable of producing a ringing sound.

(a) The budget constraint can be written as: C = wL + V, where C is consumption, w is the real wage, L is leisure, and V is non-labor market income.

(b) With ẞ = 1/2, V = 100, and w = 200, John's optimal supply of labor cannot be determined without information about his preferences for leisure and consumption. The utility function only represents his preferences, but we need additional information to determine the specific amount of labor he would choose to supply.

(c) John's total income is the sum of his labor income and non-labor market income: Total income = Labor income + Non-labor income = wL + V. Without knowing the specific value of L, we cannot calculate the total income.

(d) Similarly, without knowing John's preferences for leisure and consumption, we cannot determine the specific level of consumption he would choose.

(e) In the case where John is subject to a 10% income tax on labor income only, his new optimal supply of labor would depend on the tax rate's impact on his preferences and the trade-off between leisure and consumption. Without further information on his preferences and the specific tax structure, we cannot determine the new optimal supply of labor.

Additional information about John's preferences for leisure and consumption, as well as the specific tax structure, is necessary to calculate his optimal labor supply, total income, consumption, and the impact of the income tax on his labor supply.

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Explanation:

The work done by the dog is 0.81J.

Work done is a measure of energy expended in moving an object; most commonly calculated by multiplying the force by the distance.

It is said that no work is done if the object does not move.

The work done on an object is the amount of energy transferred to an object through work.

According to this question, a dog lifts a 0.75 kg bone straight up through a distance of 0.11 m. The force applied to break the bone must be calculated first as follows:

Force = mass × acceleration

Force = 0.75kg × 9.8m/s²

Force = 7.35N

Work done = 7.35N × 0.11m = 0.81J

Therefore, 0.81J is the work done by the dog.

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Explanation:

hpe it helps uuuu......

Answer:

The other person who answered this is correct :)

Explanation:

Magnets attract iron nails is the theory would the students most likely propose. Option A is correct.

The students' observations show that iron nails are attracted towards the North Pole (N) and the South Pole (S) of the bar magnet. This suggests that magnets have a property that attracts iron nails. The experiment was repeated by several students using different bar magnets, which further supports the theory that magnets attract iron nails.

The poles of a magnet attract all materials suggests that the poles of a magnet attract all materials, but the experiment only showed that iron nails are attracted to magnets. Iron nails are attracted towards all materials suggests that iron nails are attracted towards all materials, but the experiment only showed that iron nails are attracted to magnets. Iron nails have the same properties as magnets suggests that iron nails have the same properties as magnets, but this is not supported by the experiment. Option A is correct.

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Answer:

    E = -4000 N / C

Explanation:

The potential and electric field are related

         V = - E s

          E = - V / s

we reduce the magnitudes to the SI system

          s = 4 mm (1 m / 1000 mm) = 0.004 m

we calculate

          E = - 16 /0.004

          E = -4000 N / C