Ok soo idk what question to ask but one of my friends said tht she was dressing as Harley Quinn and she said i should dress as her too but then i said no i dont rlly dress up of those kind of people but then she started to flip out because i couldnt dress as her?? Should I tell her that not all people can dress the same even if they want to or not? What should I say so she can stop saying things that are rude just bc she is mad and thats not my fault??

Answer:

Density= 2.78 g/cm³

Relative density=2.8

Explanation:

To calculate the density of the cube we have to use the formula ρ=mass/volume

ρ stands for density.

So now we don't have the volume of the cube and to find the volume of the cube we have to use the formula a³

3³= 9 cm³

Now plug in the values. ρ= 25 g/9 cm³

ρ= 2.78 g/cm³

To find the relative density, we have to use the formula ρsample/ρH20

The sample means the density of the substance earlier. We do not know the density of water but it is constant at 997 kg/m³.

Now we have to make the units same so you change the unit of the density of cube to kg/m³

So, 25/1000= 0.025 kg

9/100×100×100 (because cm³ which means that there should be 3 meters to change the unit and to conver cm to meter we need to divide by 100 so 9cm/100, 9cm²/100×100, 9cm³/100×100×100)

=0.000009 m³

The new density= 0.025 kg/ 0.000009 m³

= 2777.78 kg/m³

Now plug the values into the formula:

relative density= 2.777.78 kg/m³ / 997 kg/m³

=2.8

There is no unit since kg/m³ and kg/m³ cancels

Ignoring the atmospheric pressure, 45 percentage of the mass will be submerged if a 0.3-kg object with half the density of human fatty tissue is placed in water.

How does the weight of the displaced water compare to the buoyant force acting on a submerged object?

The weight of the fluid displaced determines the buoyant force acting on a submerged item. By comparing an object's mass in air and its effective mass when submerged in water (density = 1 gramme per cubic centimetre), this concept can be used to determine the volume and, consequently, the density of an irregularly shaped object.

Percentage of the mass will be submerged will be equal to (density of object /density of fluid)*100%

Density of object is 0.45kg/L

Density of fluid is 1kg/L

Percentage of the mass will be submerged will be 0.45/1 *100% i.e. 45%

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The capacitance of capacitor is 6.44 μF.

We need to know about the capacitance of the air-filled capacitor to solve this problem. The capacitance of the air-filled capacitor depends on the charge and voltage. It can be written as

C = Q/V

where C is capacitance, Q is charge and V is voltage.

Capacitance also can be calculated by the area and distance between the capacitor plate

C = εo . A / d

where εo is vacuum permittivity (8.85 x 10¯¹² F/m), A is the area of the plate and d is distance.

From the question above, we know that

A = 0.8 m²

d = 1.1 x 10¯⁶ m

By substituting the given parameters, we can calculate the capacitance

C = εo . A / d

C = 8.85 x 10¯¹² . 0.8 / 1.1 x 10¯⁶

C = 6.44 x 10¯⁶ F

C = 6.44 μF

Hence, the capacitance of capacitor is 6.44 μF.

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Answer:

1606

The main reason for using light years, however, is because the distances we deal with in space are immense. If we stick to miles or kilometers we quickly run into unwieldy numbers just measuring the distance to the nearest star: a dim red dwarf called Proxima Centauri that sits a mere 24,000,000,000,000 miles away!

Explanation:

Answer:

The trachea is one part of the respiratory tree, that is a conduit for air to pass through on its way to or from the alveoli of the lungs. This transmits oxygen to the body and removes carbon dioxide.

The bronchi are the airways that lead from the trachea into the lungs and then branch off into progressively smaller structures until they reach the alveoli, the tiny sacs that allow for the exchange of oxygen and carbon dioxide in the lungs.

Explanation:

Answer:

dont know

Explanation:

sorry man

Answer:

I'm terrible at explaining so here's a screenshot, please do not listen to the other answer, it is wrong.

- Ripper

Explanation:

Answer:

C is the correct answer !!!

Explanation:

A convex lens image is located at v' = 17 cm and the image of matchstick is located at 0.825 cm left to the lens .

Using lens equation,:

1 / f =  1/ u + 1/ v

1 / 20.2  = 1 / 25 + 1 /v

v = 117.04 cm

u' = 117.04 - 20

= 97.04 cm

Using formula ,

1 / 20.2 =  - 1 / 97.04  + 1/ v'

Image located ,  v' = 17 cm

b) Magnification ,

 M = - v' / u

      = - 17 / 20.6

      = -0.825

A focal point is a piece of straightforward material limited by two surfaces of which something like one is bended. A convex lens, also known as a bi-convex lens, is a lens that is surrounded by two spherical surfaces that bulge outward. A convex lens is also a single piece of glass that converges light that hits it by bending outward.

Due to the fact that a convex mirror diverges light rays when they hit its reflecting surface, it is also known as a diverging mirror. Virtual, erect, and reduced pictures are constantly shaped with arched mirrors, regardless of the distance between the item and the mirror. A virtual image is created between the convex lens optical center and focus when an object is placed at a fixed distance from the lens. The image has a smaller dimension than the object.

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Dinesh seeks an explanation or understanding of why the friend reacted in that particular way.

Dinesh is a person mentioned in the context of the scenario you provided. From the information given, we can infer that Dinesh is observing his two friends' interactions in a cafe and is curious about the reason behind one friend's animated gestures and the other friend's closed eyes and leaned-back head. Dinesh is seeking to understand the motivations or intentions behind his friends' actions. Dinesh is an enthusiastic and dedicated individual, known for his relentless pursuit of excellence. With a strong work ethic and a thirst for knowledge, he consistently strives to expand his skills and broaden his horizons. Dinesh's keen attention to detail and analytical mindset make him a valuable asset in any task or project he undertakes. He is a great team player, always ready to collaborate and contribute ideas that lead to innovative solutions. Dinesh's friendly demeanor and excellent communication skills enable him to connect effortlessly with others, fostering positive relationships and effective collaboration.

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Yes, a 2kg rock will have twice the weight and inertia of a 1 kg rock.

The weight of an object is the measure of the effect of force of gravity on the object.

W = mg

where;

The weight of 2 kg rock and 1 kg rock is calculated as;

W (2) = 2 kg x 9.8 m/s² = 19.6 N

W (1) = 1 kg x 9.8 m/s² = 9.8 N

The weight of 2 kg rock is twice the weight of the 1 kg rock.

Inertia is the measure of reluctance of an object to move or stop moving and it depends on mass, so 2 kg tock will have twice the inertia of 1 kg rock.

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Of the four thermodynamic quantities listed, enthalpy is the only one that is a state function. A state function is a thermodynamic quantity that depends only on the initial and final states of a system, and not on the path taken to reach those states.

Enthalpy is a state function because it is defined as the sum of the internal energy of a system and the product of its pressure and volume, both of which are state functions.

Energy, work, and heat, on the other hand, are not state functions because they depend on the specific process or path taken to change the state of the system. The amount of work done or heat transferred depends on the specific conditions of the process, such as the pressure, temperature, and volume of the system, as well as the rate at which the work or heat is transferred. Therefore, these quantities are not solely dependent on the initial and final states of the system and cannot be considered state functions.

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Answer:

In an ideal pulley system is assumed as a perfect system, and the efficiency of the pulley system is taken as 100% such that there are no losses of the energy input to the system through the system's component

However, in a real pulley system, there are several means through which energy is lost from the system through friction, which is converted into heat, sound, as well as other forms of energy

Given that the mechanical advantage = Force output/(Force input), and that the input force is known, the energy loss comes from the output force which is then reduced, and therefore, the Actual Mechanical Advantage (AMA) is less than the Ideal Mechanical Advantage of an "ideal" pulley system

The relationship between the actual and ideal mechanical advantage is given by the efficiency of the pulley system as follows;

\(Efficiency \, \% = \dfrac{AMA}{IMA} \times 100\)

Explanation:

a) The image distance is -31.18 cm (real and inverted).

b) The magnification is -1.28.

c) Sherlock Holmes observes a real and inverted image that is smaller in size.

a) To find the image distance, we can use the lens equation:

  1/f = 1/di + 1/do

  where f is the focal length, di is the image distance, and do is the object distance. Given that the focal length (f) is 24.5 cm and the object distance (do) is 10.5 cm, we can substitute these values into the equation:

  1/24.5 = 1/di + 1/10.5

  Solving for di, we find:

  di ≈ -31.18 cm

  The negative sign indicates that the image is formed on the opposite side of the lens, which corresponds to a real image.

b) The magnification (M) is given by the ratio of the image distance to the object distance:

  M = di/do

  Substituting the values, we have:

  M ≈ -31.18 cm / 10.5 cm ≈ -1.28

  The negative magnification indicates that the image is inverted.

c) Based on the negative magnification and the fact that the image is formed on the opposite side of the lens (real image), we can conclude that Sherlock Holmes observes a real and inverted image. Since the magnification is greater than 1, the image is smaller in size compared to the object.

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Answer:12

Explanation:

Answer:

Explanation:

a. The amplitude is the measure of the height of the wave from the midline to the top of the wave or the midline to the bottom of the wave (called crests). The midline then divides the whole height in half. Thus, the amplitude of this wave is 9.0 cm.

b. Wavelength is measured from the highest point of one wave to the highest point of the next wave (or from the lowest point of one wave to the lowest point of the next wave, since they are the same). The wavelength of this wave then is 20.0 cm. or \(\lambda=20.0cm\)

c. The period, or T, of a wave is found in the equation

\(f=\frac{1}{T}\) were f is the frequency of the wave. We were given the frequency, so we plug that in and solve for T:

\(50.0=\frac{1}{T}\) so

\(T=\frac{1}{50.0}\) and

T = .0200 seconds to the correct number of sig fig's (50.0 has 3 sig fig's in it)

d. The speed of the wave is found in the equation

\(f=\frac{v}{\lambda}\) and since we already have the frequency and we solved for the wavelength already, filling in:

\(50.0=\frac{v}{20.0}\) and

v = 50.0(20.0) so

v = 1.00 × 10³ m/s

And there you go!

The work done is 196 J.

The amount of work done upon an object depends upon the amount of force (F) causing the work, and the displacement (d) experienced by that object.

The mass of the stone is m=10kg

It is falling from the height of 2m i.e. its displacement is 2m.

Work done by an object is given by:

W=Fs

Where 'F' is the force and 's' is the displacement.

As the body moves in the direction of force, therefore work done by gravitational force will be positive.

W = Fs

    = mgh

    = 10 × 9.8 × 2

    = 196 J

Hence, the work done is 196 J.

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Limiting the number of people that can explore certain areas can have many benefits for the environment, safety, and visitor experience.

What is Ecosystem?

An ecosystem is a community of living organisms interacting with each other and with their physical environment. It includes all the living things, such as plants, animals, and microorganisms, as well as the non-living components, such as air, water, soil, and sunlight. All these components work together to create a balanced and self-sustaining system. Every ecosystem has its own unique set of characteristics that depend on the geographical location, climate, and other factors. Examples of ecosystems include forests, deserts, oceans, and grasslands.

There are several reasons why governing bodies limit the number of people that can explore certain areas. First, it helps to preserve the natural environment and maintain the ecological balance. Overcrowding can cause damage to the ecosystem, disturb wildlife, and leave behind waste and debris that can have long-term impacts. By controlling the number of visitors, governing bodies can reduce the negative impact of human activities on the environment.

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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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Consider the Gaussian surface in the form of sphere, the electric field between the spheres is radially outwards.

For a positive charge, the electric field lines are projecting outwards of positive charge.

For a negative charge, the electric field lines are projecting inwards of positive charge.

Hence, the electric field points radially outwards.

The physical field that surrounds electrically charged particles, known as an electric field (or E-field), exerts force on all other charged particles in the field, either attracting or repelling them.  Additionally, it describes the physical environment of a system of charged particles. Time-varying electric currents and electric charges are the building blocks of electric fields. One of the four basic interactions (also known as forces) of nature, the electromagnetic field, manifests itself in both electric and magnetic fields.

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Answer:

b

Explanation:

Answer:

b

Explanation:

Answer:

F • t = m • Δ v

Explanation:

B. Piron > Pwater > Pwax

Wax normally floats in water,it is less dense than water.

Iron is more dense than water, so it sinks.

Answer:

B.    P iron >  P water > P wax

Answer:

2. deer

Explanation:

The lion, spider, and snake eat meat or to an extent.

Deer don't eat meat

Answer:

deer :)

Explanation:

The rest are basically carnivores

Answer:

22.4%

Explanation:

The plane is 300000 kg

It is 11000 meters about the earth's surface.

g = 9.81

PE = mgh

PE = 300000 * 9.81 * 11000

PE = 3.24* 10^10

The Kinetic Energy

KE = 1/2  m * v^2

m = 300000

v = 250 m/s

KE = 1/2 300000 * (250 m/s)^2

KE = 9.375 * 10^9

Total Energy = 3.24 * 10^10 + 9.375 * 10^9

Total Energy = 4.17 * 10^10

9.375 * 10^9

===========    * 100 % = 22.44 %

4.17 * 10^10

Answer:

True but mostly false.

Explanation:

If you squint enough at night, you'd be able to see it. Otherwise it's not really possible.

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\( \quad\quad\quad\quad\)

\( \blue{ \star}\)Magnetic Energy :

\( \blue{ \star}\)Gravitational Energy :

\( \blue{ \star}\)Nuclear Energy :

\( \blue{ \star}\)Thermal energy :

Answer:

Milk

Explanation:

Milk is what we call colloid.

A colloid is, basically, a substance that has a homegenous appereance in naked eye. But with some pressure on it or looking into a good microscope, we can see other particles, other pure substances.

In the case of milk, we have fat, proteins, water and a few other things.

Table salt, rubbing alcohol and Rust on a nail are all pure substances, because they have only one type of atoms arrangement, respectively:

NaCl - a "crystal" - , Fe(OH)³ - other "crystal" -, and C3H8O - who has a classic geometric form.

10% of more girls are likely to work than boys.

option A.

The percentage of girls who are more likely to work than boys are calculated as follows;

Total number of boys = 18 + 12 = 30

Number of boys who works = 18

Percentage = 18/30 x 100% = 60%

Total number of girls = 14 + 6 = 20

Number of girls who works = 14

Percentage = 14/20 x 100% = 70%

Difference = 70% - 60% = 10%

So 10% of more girls are likely to work than boys.

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