Suppose that two stars are separated in the sky by 0. 1 arcsecond. If you look at them with a telescope that has an angular resolution of 0. 5 arcsecond, what will you see?.

A) The mass of 28.76 mL of acetone is approximately 22.7 g.

B) The volume of 6.40 g of acetone is approximately 8.12 mL.

A) To determine the mass of 28.76 mL of acetone, we need to know the density of acetone. The density of acetone is approximately 0.789 g/mL. Therefore, we can calculate the mass as follows:

Mass = Volume * Density

Mass = 28.76 mL * 0.789 g/mL

Performing the calculation:

Mass ≈ 22.67564 g

Rounding the result to the correct number of significant figures, the mass of 28.76 mL of acetone is approximately 22.7 g.

B) To determine the volume of 6.40 g of acetone, we can rearrange the formula:

Volume = Mass / Density

Volume = 6.40 g / 0.789 g/mL

Performing the calculation:

Volume ≈ 8.116 g/mL

Rounding the result to the correct number of significant figures, the volume of 6.40 g of acetone is approximately 8.12 mL.

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When two boxes are standing upright with one on top of the other, the force exerted by the top box on the bottom box is equal in magnitude and opposite in direction to the force of gravity acting on the top box.

According to Newton's third law of motion, for every action, there is an equal and opposite reaction. In this case, the force of gravity acting on the top box creates a downward force.

By Newton's third law, the top box exerts an equal and opposite force on the bottom box. Therefore, the force exerted by the top box on the bottom box is equal in magnitude and opposite in direction to the force of gravity acting on the top box.

This force ensures that the boxes remain in equilibrium and do not fall or move relative to each other.

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Answer:

false a curciut is just a loop of electricity goes in and negative comes out  when using a battery the negative goes in and the goes out making a battery have two sides to a uircute.

hope this helps!  

Explanation:

To match the major organs of digestion with the correct purpose we have to read each definition and concept (major organs). Once we identify the correct for each definition, we have to put the name of the organ in front of the definition.

To match the major organs of digestion with the correct purpose we have to read each definition and concept (major organs). Once we identify the correct for each definition, we have to put the name of the organ in front of the definition as follow:

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Answer:

Mirror

Explanation:

The types of scales of measurement are important in statistics since they help to decide what statistical measures can be applied to the data. The nominal scale is the least precise scale, while the ratio scale is the most precise scale.

The scales of measurement of variables are defined as the various ways a variable can be measured or described. Below are the answers to the given question: - Eye color (blue, brown, hazel, green) - Nominal scale.- Grade on a test (A, B, C, D, F) - Ordinal scale. - Score on a Likert-type scale (1, 2, 3, 4, 5, 6, 7) - Interval scale. - A person's age measured in years - Ratio scale. - Age classification (infant, child, teen, young adult, adult, older adult) - Ordinal scale.
- Number of correct answers on a test - Ratio scale. - Nominal scale - A scale that describes variables that have distinct categories or names that are used to identify them. - Ordinal scale - A scale that describes variables that have categories that can be ranked in order of importance or magnitude. - Interval scale - A scale that describes variables with continuous and evenly spaced values that have an arbitrary zero point. - Ratio scale - A scale that describes variables with continuous and evenly spaced values that have a meaningful zero point.

The types of scales of measurement are important in statistics since they help to decide what statistical measures can be applied to the data. The nominal scale is the least precise scale, while the ratio scale is the most precise scale.

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Connecting another light bulb in series with the first would increase the total resistance in the circuit, which would result in a decrease in the overall current drawn from the power source.

This is because in a series circuit, the current passing through each component is the same, so an increase in resistance in any part of the circuit would cause a decrease in the total current.

The decrease in current would cause both light bulbs to become dimmer, as they are now sharing the available power.

Ohm's law states that the current (I) in a circuit is directly proportional to the voltage (V) and inversely proportional to the resistance (R). Mathematically, this is represented as I = V/R. Therefore, when the resistance in the circuit increases, the current will decrease, provided the voltage remains constant.

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The difference between the magnitudes of stars will be 4.0 magnitudes.

The term magnitude is used to refer to a star's brightness.

Two different magnitudes are used by astronomers to describe stars. The brightness of the star as seen from Earth is known as its apparent magnitude. The perceived brightness is the basis for the magnitude scale. Astronomers can use this to establish the star's exact absolute magnitude. The real brightness of the star is measured by its absolute magnitude.

According to the question, the difference between the magnitude of two stars will be :

\(m_b-m_a\)=2.5 log(\(I_A/I_B\)) where,

\(m_a\) and \(m_b\) is the magnitude of star A and Star B and,

\(I_A\) and \(I_B\) is the intensity of star A and Star B

As per the given value, the intensity ratio of the two stars is :

\(I_A/I_B\)=40

So, by using the formula :

\(m_B-m_A\)=2.5 log(\(I_A/I_B\))

=2.5 log (40)

=4.0 magnitudes.

Hence, the magnitude difference between two stars is 4.0 magnitudes.

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Answer:

v = 98.1 m/s

Explanation:

We will apply the law of conservation of energy here, between peak A and peak B.

Total Energy of Ball at A = Total Energy of Ball at B

\(K.E_{A}+P.E_{A}=K.E_{B}+P.E_{B}\\where,\\K.E_{A} = Kinetic\ Energy\ of\ ball\ at\ Peak\ A = \frac{1}{2}mv^{2} \\K.E_{B} = Kinetic\ Energy\ of\ ball\ at\ Peak\ B = \frac{1}{2}m(0)^{2} = 0\ J (since, ball\ stops\ at\ last) \\\)

\(P.E_{A} = Potential\ Energy\ of\ ball\ at\ Peak\ A = mgh_{A}\\P.E_{B} = Potential\ Energy\ of\ ball\ at\ Peak\ B = mgh_{B}\)

\(\frac{1}{2}mv^{2} + mgh_{A} = 0\ J + mgh_{B}\\m(\frac{1}{2}v^{2} + gh_{A}) = mgh_{B}\\v = \sqrt{2g(h_{B}-h_{A})}\\where,\\h_{A} = height\ pf\ peak\ A = 5\ m\\h_{B} = height\ pf\ peak\ B = 10\ m\\v = \sqrt{2(9.81\ m/s^{2})(10\ m-5\ m)}\\\)

v = 98.1 m/s

Answer:

c

Explanation:

Answer:

protons have a positive charge

Explanation:

neutrons have no charge

electrons have negative charge

Answer:

The metal is beginning to rust

Explanation:

Because when it is out side a small layer of condensation begins to form which the turns to rust as it is outside colliding with the cold air

Answer:

he can fall down

Explanation:

he could fall down because of the tomatoes and do notice he has fallen down because of them

The difference between the natural fibers and synthetic fibers is like synthetic fibers are produced using chemicals while, natural fibers are derived from plants and animals and are appreciated in the textile business for several factors.

The fibers that come from natural sources are known as natural fibers. The origins can range from zoological to botanical components. In other words, natural fibers are those that are obtained from plants and animals in their natural state. Wool, silk, hemp, cotton, and linen are a few examples of fabrics that naturally breathe.

Synthetic fibers are produced through a sequence of chemical processes, as their name suggests. These fibers are produced using a variety of chemical compounds rather than being derived from natural sources.

The creation of tiny molecules known as polymers is the process used to create synthetic, artificial, or man-made fibers. In most cases, raw materials and chemical compounds are used to extract polymers. Nylon, polyester, acrylic, and more are a few examples.

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The direction of the current flowing in the wire is inside the plane when viewed from above.

The direction of a magnetic field in a current carrying conductor can be found out by using Right Hand Thumb Rule.

According to this rule. if we suppose a straight wire is carrying current, not if we align the thumb of our right hand in the direction of the flowing current, then the direction of the magnetic field is same as that of the the curling fingers.

In our question, if we apply this rule then we can find, if we align our fingers in the same manner as that of the magnetic field, then the direction of our pointing thumb will be inside. The direction of thumb pointing will be same as that of the current.

So, we can say that by Right Hand Thumb Rule, the direction of the flowing current is Inside when viewed from top.

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Answer:

Well if it gets warmer the ice will weaken and if it gets hot enough will melt. Of course if the weather gets colder the ice will thicken.

Explanation:

Answer:

The change in ice alters the color of the lake surface — ice and snow cover are generally white, while the lake water itself is a deep blue.

Explanation:

hope it help

The distance from the axis of the force applied is 2.05 m.

The distance from the axis of the force applied is calculated as follows;

The formula for torque;

τ = Fr

where;

Another formula for torque is given as;

τ = Iα

where;

τ = (mr²)α

τ = (25 kg x (0.925 m)²) x (1.84 rad/s²)

τ = 39.36 Nm

The distance is calculated as;

r = τ/F

r = ( 39.36 Nm ) / (19.2 N)

r = 2.05 m

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The true statements about exomoons are:

A. Exomoons are likely to exist

D. Exomoons have been used as locations within science fiction stories

C. Exomoons must be only made of ice

A. Exomoons are likely to exist: It is believed that exomoons could exist in planetary systems beyond our own. While the detection and confirmation of exomoons remains a challenge, their existence is considered plausible based on the understanding of moon formation and the prevalence of exoplanets.

D. Exomoons have been used as locations within science fiction stories: Exomoons, being a fascinating concept, have captured the imagination of science fiction writers. They have been depicted in various stories and movies as intriguing and potentially habitable worlds.

E. Exomoons are moons that orbit exoplanets: An exomoon refers to a moon that orbits an exoplanet, which is a planet outside our solar system. Just like moons in our own solar system, exomoons are expected to orbit exoplanets, providing additional complexity and dynamics to the planetary systems.

C. Exomoons must be only made of ice: This statement is not true. Exomoons can be composed of various materials depending on their formation and composition. While some exomoons could have icy surfaces or subsurface oceans, others may be rocky or have diverse compositions.

It is important to note that our understanding of exomoons is still limited, and further research and observations are required to confirm their existence and study their characteristics.

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Answer:

Crumple Zones are parts of a car that are designed to deform and absorb large amounts of energy from car collisions and impacts. This helps reduce the force that acts on the driver in a car accident [1]. 2: Newton's Second Law states that Force= Mass x Acceleration

Explanation:

The main or major source of energy in nuclear energy or geothermal energy is radioactive decay.

Radioactive decay is the emission of energy in the form of ionizing radiation.

Radioactive decay occurs in atoms that become unbalanced, called radionuclides.

Radioactive decay is the spontaneous breakdown of an atomic nucleus resulting in the release of energy and matter from the nucleus.

Radioactive decay usually results in the release of hug amount of energy.

Thus, we can conclude that the main or major source of energy in nuclear energy or geothermal energy is radioactive decay because the process usually results in the release of hug amount of energy.

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B

Explanation:

yeah but I don't know what

The blood flows through a major artery at 1.2 m/s over a distance of 0.40 m and then at 0.60 m/s for another 0.40 m through a smaller artery.

The average velocity of an object is defined as the total displacement divided by the total time taken. In this case, we are given the velocities and distances of blood flow through two different sections of arteries. To find the average velocity, we need to calculate the total displacement and the total time taken.

In the first section, the blood flows at a velocity of 1.2 m/s over a distance of 0.40 m. Using the formula for average velocity:

Average velocity in the first section = total displacement in the first section / time taken in the first section.

Since the velocity is constant, the time taken in the first section can be calculated as:

time taken in the first section = distance in the first section / velocity in the first section.

Substituting the given values, we have:

time taken in the first section = 0.40 m / 1.2 m/s.

Similarly, in the second section, the blood flows at a velocity of 0.60 m/s over a distance of 0.40 m. Using the same approach as above, we can calculate the time taken in the second section.

Finally, the total time taken is the sum of the time taken in the first and second sections. The total displacement is the sum of the distances in both sections. Dividing the total displacement by the total time taken gives us the average velocity of the blood flow throughout the entire distance.

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No, not all planets orbit in the same direction when viewed from above the earth's north pole.  

The eight planets in the solar system orbit the sun in the same plane. All the planets orbit in the same direction as the sun, which is counterclockwise when viewed from above the solar system. This is also known as the prograde rotation or the direct orbit.However, there are a few exceptions to this rule. Two planets, Venus and Uranus, have a different rotational axis than the rest of the planets.

This means that they appear to be rotating clockwise or retrograde, when viewed from above their respective poles.Venus rotates slowly and in the opposite direction of its orbit, causing the sun to rise in the west and set in the east. Uranus, on the other hand, has an extreme axial tilt, causing it to appear to be rotating on its side, with its poles almost parallel to the plane of the solar system.In summary, not all planets orbit in the same direction when viewed from above the earth's north pole. While the majority of planets in the solar system have a prograde rotation or direct orbit, Venus and Uranus are exceptions to this rule and have a retrograde rotation.

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The intensity of 1 MeV gamma-rays incident on a thin slab of water required to give an absorption rate of 1 rad/sec is approximately \(6.25 * 10^{13} MeV/sec\).

To calculate the radiation intensity, we need to convert the absorption rate of 1 rad/sec to the dose rate in Gray/sec, and then to the radiation intensity in MeV/sec. Since 1 rad/sec is equivalent to an absorption rate of 0.01 Gy/sec, we have:

0.01 Gy/sec = (energy absorbed per second) / (mass of material x 1 sec)

For water, the mass per unit volume is \(1 gram/cm^3\) or \(1000 kg/m^3\). Therefore, we have:

\(0.01 Gy/sec = (energy absorbed per second) / (1000 kg * 1 m^2 * 1 sec)\)

Solving for the energy absorbed per second, we get:

energy absorbed per second = 0.01 Gy/sec x 1000 kg = 10 J/sec

The energy of 1 MeV gamma-rays is equal to \(1.6 * 10^{-13} J\). Therefore, the radiation intensity required to deposit 10 J of energy per second in the water is:

\(intensity = (10 J/sec) / (1.6 *10^{-13} J/MeV) = 6.25 *10^{13} MeV/sec\)

Therefore, the intensity of 1 MeV gamma-rays incident on a thin slab of water required to give an absorption rate of 1 rad/sec is approximately \(6.25 * 10^{13} MeV/sec\).

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The tension in the cable is 4,778.3 N.

The tension in the cable can be calculated using the formula T = m(g - a),

where T is the tension, m is the mass of the steel ball, g is the acceleration due to gravity (9.8 m/s²), and a is the downward acceleration of the ball.

Given:

m = 1.010 kg

a = 5.07 m/s²

g = 9.8 m/s²

T = m(g - a)

T = (1.010 kg)(9.8 m/s2 - 5.07 m/s²)

T = (1.010 kg)( 4.73 m/s²) T = 4,778.3 N

Therefore, the tension in the cable is 4,778.3 N.

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Answer:

Current equals Power divided by Voltage (I=P/V), Power equals Current times Voltage (P=VxI), and Voltage equals Power divided by Current (V=P/I).

P = V I

2.2*10³ = 220 * I

I = 10 amps

To find the average velocity on a velocity-time graph, you need to calculate the slope of the line connecting two points on the graph. The average velocity represents the change in velocity divided by the change in time between those two points.

To calculate the average velocity, you can use the formula:

Average velocity = (change in velocity) / (change in time)

You can determine the change in velocity by finding the difference between the final velocity and the initial velocity. The change in time is the difference in the time coordinates of the two points.

Select two points on the velocity-time graph, typically denoted by (t₁, v₁) and (t₂, v₂), where t represents time and v represents velocity. Then, substitute the values into the formula mentioned above to calculate the average velocity.

It's important to note that the average velocity provides information about the overall change in velocity over a specific time interval, rather than instantaneous velocity at a particular moment.

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Answer:

I think it's in a series

Explanation:

is this an aviation class