What do you notice about the angle of earth?

An electrically charged object can be used to attract any object with an opposite charge.

This is due to the fundamental principle that opposites attract and repel in physics.

Electric charge is a fundamental property of matter that gives rise to electromagnetic interactions. An electric charge, whether positive or negative, produces an electric field that surrounds it. This field exerts a force on any other charge in its vicinity that is either attracted to or repelled from it. Electric charge is a fundamental property of matter that produces a variety of electric phenomena. When the charge is concentrated in a localized region of space, the object is electrically charged. When there is a net accumulation of charge in an object, it becomes electrically charged. An electrically charged object produces an electric field in its vicinity, which exerts a force on other charged objects. An electrically charged object can be used to attract objects with an opposite charge or repel objects with the same charge.

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Part A: The radius of curvature of the lens surface is approximately 3.17 m. Part B: The focal length of the lens is approximately 1.59 m.

Part A:

To find the radius of curvature of the lens surface, use the formula for the radius of the nth bright ring in a planoconvex lens:

r = √(n × λ × f),

where r = radius of the nth bright ring, λ = wavelength of light, and f = focal length of the lens.

In this case, n = 42 (since the last bright ring is observed at the edge), λ = 580 nm (converted to meters, so λ = 580 × 10⁻⁹ m).

Rearranging the formula, solve for f:

f = r² / (n × λ).

Plugging in the values:

f = (0.021 m²) / (42 × 580 × 10⁻⁹ m).

Calculating this expression gives:

f = 3.17 m.

Therefore, the radius of curvature of the lens surface is approximately 3.17 m.

Part B:

The focal length of the lens can be determined using the formula:

f = R / 2,

where R = radius of curvature.

Plugging in the value for the radius of curvature obtained in Part A:

f = 3.17 m / 2.

Calculating this expression gives:

f = 1.59 m.

Therefore, the focal length of the lens is approximately 1.59 m.

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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

When a knowledgeable amateur astronomer tells you that she has a 14-inch telescope, the number 14 refers to the diameter of the telescope’s objective lens.

A telescope is a device used to view distant objects by utilizing electromagnetic radiation to either magnify their apparent size or gather more light than the human eye can. Telescopes are used for scientific, commercial, and amateur purposes. The telescope comprises an objective lens or mirror and an eyepiece to magnify the images created by the objective. Most telescopes have a viewfinder to make it simpler to aim the telescope precisely at the object of interest. They may also have a motorized mount to track celestial objects as they move across the sky.

Telescopes come in a variety of sizes, designs, and shapes and they range from large observatory telescopes to handheld amateur models. They are often classified into two types, reflecting and refracting telescopes and the size of a telescope is determined by the diameter of its objective lens or mirror. The bigger the diameter, the more light the telescope can collect, and the clearer the image. The diameter of the objective is the most significant aspect of a telescope when it comes to observing the heavens. For instance, a 14-inch telescope has an objective lens with a diameter of 14 inches, this large lens is capable of collecting a lot of light and providing clear images, making it a perfect tool for viewing the night sky.

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As the angle of incline is increased then acceleration will also increase.

As the angle of the incline is increased, normal force is decreases, which decreases the frictional force also. The incline can be raised until the object begins to slide. The force acting parallel to the plane causes the object to accelerate down the incline and the force of friction opposes the object's motion so it acts upward.

When the angle is increased, the component of weight along the plane also (mg sin θ) increases. To balance this, the frictional force has to increase.

Angular acceleration represents time rate of change of angular velocity.  The units for this acceleration is rads/s2 or degrees/s2.

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The two units of Power are Watt and Horse power. The correct options are A and D.

Thus, Watt - In the International System of Units (SI), the watt (W) serves as the default unit of power.

It displays the amount of effort or energy transferred per unit of time. Hp. The horsepower (HP) unit of power is a non-SI measure of power that is frequently used when discussing mechanical power.

In the automotive and industrial industries, in particular, it is frequently employed for rating the engine power. Watt and D. HP are the appropriate units of power from the listed options.

Thus, The two units of Power are Watt and Horse power. The correct options are A and D.

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Convective currents are most active on warm summer afternoons when winds are strong. During warm summer afternoons, the sun's radiation heats the Earth's surface, especially in areas with a higher temperature.

This causes the air near the surface to become warmer and less dense, leading to its upward movement. As the warm air rises, cooler air from the surroundings rushes in to fill the void, creating convective currents. These currents are further intensified when there are strong winds present, as they enhance the circulation and vertical motion of the air. On such days, the temperature gradient between the warm ground and the cooler upper atmosphere is steeper, which promotes the development of convective instability. The rising warm air parcels, known as thermals, can reach higher altitudes and form cumulus clouds. In the presence of moisture, these clouds can grow into cumulonimbus clouds, resulting in thunderstorms and heavy rainfall.

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The factor of safety for the slope stability analysis needs to be determined for a regolith slope in central California. The parameters provided include regolith cohesion, angle of internal friction, and regolith density. The analysis involves evaluating the stability of the slope under different conditions, such as changes in water depth, angle of internal friction, and slope steepness. Recommendations for the homeowners regarding the safety of their homes and potential remediation measures will also be provided.

To calculate the factor of safety, we need to consider the forces acting on the slope. The driving force is the weight of the regolith, which can be calculated by multiplying the density of the regolith by the volume of the slope. The resisting force is the shear strength of the regolith, which is determined by the cohesion and angle of internal friction. The factor of safety is the ratio of the resisting force to the driving force.

a. To determine the factor of safety, we can use the given parameters and calculate the driving force and resisting force. By dividing the resisting force by the driving force, we can obtain the factor of safety. If the factor of safety is greater than 1, it indicates that the slope is stable. If it is less than 1, the slope is considered potentially unstable.

b. If the water depth increases by 2 m, it adds additional weight to the slope, increasing the driving force. This decrease in the factor of safety suggests a less stable slope compared to the initial scenario.

c. If the angle of internal friction increases by a factor of 2, it enhances the shear strength of the regolith. This increase in the factor of safety indicates a more stable slope.

d. If the slope becomes steeper by a factor of 2, it increases the driving force. This decrease in the factor of safety suggests a less stable slope.

e. Based on the analysis, it is important to advise the homeowners that the slope is currently unstable, considering the factor of safety is less than 1. Remediation measures may include slope stabilization techniques such as installing retaining walls, soil reinforcement, or drainage systems to manage water infiltration and reduce driving forces. It is recommended to consult with a geotechnical engineer to develop a comprehensive slope stability plan for the safety of the home.

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Explanation:

the amount of displace water is equal to the weight of cannon

Answer: It could be many things. For example liquid, gaseous or solid objects.

Explanation: For conduction to take place between two objects, they must be touching each other. For conduction to occur between atoms within the same object, they must also be touching (or nearly touching).

The the NW section of the Earth is experiencing night and winter  in Position 1.

Option 3 is correct.

Day and night are due to the Earth rotating on its axis, not its orbiting around the sun.

The term 'one day' is determined by the time the Earth takes to rotate once on its axis and includes both day time and night time. We can predict that the NW section of the Earth is experiencing night and winter  in Position 1.  

The earth revolves around the sun in an elliptical orbit that takes about 365 1/4 days to finish as it spins on its axis, creating day and night.

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According to the octet rule, if an atom has fewer than 8 electrons in the outer most energy level, it will react with other nearby atoms to give, receive or share electrons until it has a full outer shell.

The octet rule refers to the tendency of atoms to prefer eight electrons in their valence shell.

If the atom has less than 8 electrons, the atoms tend to react to form more stable compounds.

The discussion of the octet rule does not consider d or f electrons. It is useful for main group elements because only s and p electrons participate in the octet rule.

Atoms are reacted to be as stable as possible. Complete octets are very stable because all orbitals are full. Since atoms with higher stability have less energy, reactions that increase the stability of atoms release energy in the form of heat or light.

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Answer:

It will react with other nearby atoms to give, receive or share electrons until it has a full outer shell.

Explanation:

im prolly really late for this one but lol oh well

Answer:

Explanation:

From the question, we were made to understand that the collision between the two billiard balls was an elastic collision. Hence, an elastic collision is one in which the kinetic energy is conserved. Meaning the kinetic energy before the collision is still retained after the collision.

Kinetic energy before collision = kinetic energy after collision

1/2mv^2 = 1/2mv^2

There was no gain nor loss in energy

Answer:

unchanged

Explanation:

okay, so what i have learned from my experiences with doing school on e.d.g.e.n.u.i.t.y (they won't let me say the website name on here lol) is that after you write an extended response, they show you a sample response as well as these checkboxes which show things they wanted you to have included in your answer. ideally they want you to select all of them, meaning that all of those elements were included in your answer. it's not a matter or right or wrong; none of those checkboxes contain a wrong answer. you just select the ones that apply to your answer, and you won't get penalized if you don't select all of the checkboxes. you don't even have to select any of them. there's been times where my answer has been not at all what it should've been and i just click done without checking any of those boxes because i did not include any of those elements in my response. as long as the box that you wrote your answer in is outlined in green (which yours is, and that means that the computer likes your answer), you will be fine.

i hope this makes sense! it's sort of hard to explain. if you have any questions, just comment and i'll try my best to explain better lol. have a great rest of your day! <3

The speed of the car is 1.175 mph.

In everyday use and in kinematics, the speed of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity.

To find the speed of the car in mph, we need to use the formula:
Speed = (2 x π x radius x rpm) / (60 x 5280)

Plugging in the given values, we get:

Speed = (2 x π x 11 x 600) / (60 x 5280)
Speed = (2 x 3.14 x 11 x 600) / (60 x 5280)
Speed = 103.45 / 88
Speed = 1.175 mph

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Answer:

Explanation:

The kinetic energy of the car can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\ \)

m is the mass

v is the velocity

From the question we have

\(k = \frac{1}{2 } \times 650 \times {22}^{2} \\ = 325 \times 484\)

We have the final answer as

Hope this helps you

Answer:

answer is Heating

Explanation:

take a solid and heat it it will become a liquid

the wavelengths in the hydrogen spectrum of the first four members of the series where m=1, the first four members have the wavelength of \(1.464 * 10^7 m,\) \(1.231 * 10^7 m,\) \(1.164 * 10^7 m,\) and \(1.097 * 10^7 m.\)

The wavelengths of the spectral lines in the Lyman series of the hydrogen spectrum can be calculated using the Rydberg formula:

1/λ = \(R * (1/n1^2 - 1/n2^2)\)

Where λ is the wavelength of the spectral line, R is the Rydberg constant (approximately \(1.097 * 10^7 m^-^1)\), and n1 and n2 are positive integers representing the energy levels of the electron in the hydrogen atom.

For the Lyman series, we have m = 1, which means the electron transitions from higher energy levels (n2) to the first energy level (n1 = 1).

Let's calculate the wavelengths for the first four members of the Lyman series:

For n2 = 2:

1/λ = \(R * (1/1^2 - 1/2^2)\)

1/λ = \(R * (1 - 1/4)\)

1/λ = \(R * (3/4)\)

λ = \(4/3R\)

Substituting the value of the Rydberg constant:

λ = \((4/3) * (1.097 × 10^7 m^-^1)\)

λ ≈ \(1.464 * 10^7 m\)

For n2 = 3:

1/λ = \(R * (1/1^2 - 1/3^2)\)

1/λ = \(R * (1 - 1/9)\)

1/λ = \(R * (8/9)\)

λ = \(9/8R\)

Substituting the value of the Rydberg constant:

λ = \((9/8) * (1.097 * 10^7 m^-1)\)

λ ≈ \(1.231 * 10^7 m\)

For n2 = 4:

1/λ = \(R * (1/1^2 - 1/4^2)\)

1/λ = \(R * (1 - 1/16)\)

1/λ = \(R * (15/16)\)

λ = \(16/15R\)

Substituting the value of the Rydberg constant:

λ = \((16/15) * (1.097 * 10^7 m^-^1)\)

λ ≈ \(1.164 * 10^7 m\)

For n2 = 5:

1/λ = \(R * (1/1^2 - 1/5^2)\)

1/λ = \(R * (1 - 1/25)\)

1/λ = \(R * (24/25)\)

λ = \(25/24R\)

Substituting the value of the Rydberg constant:

λ = \((25/24) * (1.097 * 10^7 m^-^1)\)

λ ≈ \(1.097 * 10^7 m\)

Therefore, the wavelengths of the first four members of the Lyman series are approximately:

\(1.464 * 10^7 m,\)

\(1.231 * 10^7 m,\)

\(1.164 * 10^7 m,\)

and \(1.097 * 10^7 m.\)

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Explanation:

m = 66 kg

a = 2 m/s²

F = .....?

= 66 . 2

= 132 N

It's not. What it is, often, is easier.

You should know by now that you need to be working with a consistent set of units. This means that your unit for velocity is your unit for length divided by your unit for time…and your unit for acceleration is your unit for velocity divided by your unit for time…and your unit for force is your unit for acceleration multiplied by your unit for mass…and your unit for energy is your unit for force multiplied by your unit for length…and your unit for power is your unit for energy divided by your unit for time…and so on.

In this way, your calculations will automatically yield answers in the correct units.

SI makes things very easy because of everything being consistent and base 10 with the metric prefixes. It also was standardized nicely from the start. It also is based upon a number of important physical constants…so, for example, water at room temperature is about 1g/cc and it has a a specific heat of 1 calorie per gram and 100 degrees between freezing and boiling.

These days, all other systems of measurement are based on SI units, anyway, so you'll be hard pressed to find a better and easier system to work with.

Answer:

ω2 = ω1 + 1/2 α t^2       equation for circular motion

ω2 = 0     and    α is negative since it is slowing

t = (ω1 * 2 / ,771)^1/2

t = (60.3 * 2 / .771)^1/2 = 12.5 sec

It takes 78.3 seconds (s) for the gyroscope to come to rest. The problem provides us with the initial rate of the gyroscope, which is 60.3 rad/s, and the rate at which it slows down, which is 0.771 rad/s2. To find the time it takes for the gyroscope to come to rest, we need to use the equation:

ωf = ωi + αt

where ωf is the final rate of the gyroscope (which is 0 since it comes to rest), ωi is the initial rate of the gyroscope (which is 60.3 rad/s), α is the rate of deceleration (which is -0.771 rad/s2 since it's slowing down), and t is the time it takes for the gyroscope to come to rest (what we're looking for).

Substituting the given values, we get:
0 = 60.3 - 0.771t

Solving for t, we get:

t = 78.3 s

Therefore, it takes 78.3 seconds for the gyroscope to come to rest.

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Answer:

B

Explanation:

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Answer:

When two waves meet in such a way that their crests line up together, then it's called constructive interference. The resulting wave has a higher amplitude. In destructive interference, the crest of one wave meets the trough of another, and the result is a lower total amplitude.

Answer:

Approximately \(39 \; \rm m\), assuming that the gravitational field strength is \(g = 9.81\; \rm m\cdot s^{-2}\) and that the air resistance on this baseball is negligible.

Explanation:

Start by finding the duration \(t\) of the flight of this baseball.

The SUVAT equation \(h = (1/2)\, g\, t^{2} + v_{0} \, t\) relates \(t\) to initial height \(h\), initial vertical velocity \(v_{0}\), and gravitational acceleration \(g\). (This equation applies only if the air resistance on the baseball is negligible.)

The initial vertical velocity of this baseball would be \(v_{0} = 0\; \rm m\cdot s^{-1}\) since this ball was thrown horizontally. The equation becomes:

\(\begin{aligned}h &= \frac{1}{2}\, g\, t^{2} + v_{0} \, t \\ &= \frac{1}{2}\, g\, t^{2}\end{aligned}\).

Rearrange and solve for \(t\):

\(\begin{aligned}t^{2} &= \frac{2\, h}{g} \end{aligned}\).

\(\begin{aligned}t &= \sqrt{\frac{2\, h}{g}} && (\text{$t \ge 0$)} \end{aligned}\).

(So is the case for other free fall motions where the initial vertical velocity is \(0\).)

Substitute in \(g = 9.81\; \rm m\cdot s^{-2}\) and the initial height of the baseball \(h = 3\; \rm m\):

\(\begin{aligned}t &= \sqrt{\frac{2\, h}{g}} \\ &= \sqrt{\frac{3\; \rm m}{9.81\; \rm m\cdot s^{-2}}} \\ &\approx 0.782\; \rm s\end{aligned}\).

In other words, the baseball would have flown for approximately \(0.782\; \rm s\) before landing. If there is no air resistance on this baseball, the horizontal velocity of this baseball would be constant (\(50\; \rm m\cdot s^{-1}\) until the ball lands.) This baseball would have travelled a horizontal distance of approximately:

\(50\; \rm m \cdot s^{-1} \times 0.782\; \rm s \approx 39\; \rm m\).

Answer:

a reactions. that is tha anser

Answer:6.50=3+a×0.200

0.200a=3.50

a=3.50/0.200

a=17.5 m/sec.square

Explanation:the initial speed(u)=3m/sec.

last speed (v)=6.50/sec.

time(t)=0.200sec

so, from

v=u+at(first equation of motion)

after solving will get the answer

Answer:

both

Explanation:

really you don't know something from kindergarden

The deflection angle would have been 37.29º if the prism had been made of polystyrene plastic.

As we know that the deflection angle is an angle between the moving object from its directed course.

In the following question the deflection angle as laser enters the beam is, B = 22.6º

refractive index of glass, n1= 1.52

refractive index of polystyrene plastic, n2 = 1.59

Now when we see for the second surface then ,

B  = 45º - 22.6º

B  = 22.40º

So from Snell's law:

n1 sinθ1 = n2 sinθ2

→ sin B / sinθ = n1 / n2

sinθ = (sin 22.40º) × ( 1/ 1.59)

θ = 37.29º

Thus, the deflection angle should be 37.29º if the prism is made of polystyrene plastic.

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