If serena has wanted to have sapphire ring that has .0517 mol of al on it the molar mas of al2o3 is 101,96 the density of ring is 3.98 g/cm3 what the volume of the ring?

Answer: (75°C × 9/5) + 32 = 167°F

Explanation: Thats the formula

Orbital velocity of satellite

\(v = \sqrt{ \frac{gm}{r} } \)

Radius of new orbit r' =6r

Thus new orbital velocity of satellite:

\(v = \sqrt{ \frac{gm}{6r} } = \frac{v}{ \sqrt{6} } \)

For satellites in circular orbits, the relationship between orbital velocity and altitude is strict. The task of a satellite launch rocket is to release the satellite at a suitable place in space, with the appropriate speed and direction of movement to put it in the desired orbit.

How a satellite stays in orbit can be thought of in two equivalent ways, both of which explain the relationship between the satellite's altitude and velocity.

The motion of the satellite can be seen as creating a centrifugal force that opposes the gravitational pull. For example, imagine attaching an object to a string and swinging it in a circle. The object is pulling outward against the string, and that outward force (centrifugal force) becomes greater the faster the object swings. At the right speed, the centrifugal force of the satellite due to motion around the earth just balances the gravitational pull, and the satellite remains in orbit.

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Answer:

2970dB

Explanation:

30 x99=2970

Answer:

A tidal is a type of wave is most affected by gravity from the sun and the moon.

Explanation:

I hope it helps ❤❤

Tidal wave is the type of wave which is most affected by gravity from the

Sun and the moon

The sun and the moon's gravitational pull results to the tidal force being

generated. The tidal force from the tidal wave generated has some effects

on the earth.

It causes the  Earth and its water content to bulge out on two sides of the

earth. It bulges in the area with the highest proximity to the moon and areas

with the lowest proximity. This is responsible for the formation of high tides

in  water bodies.

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A thermal energy transfer portfolio would be an excellent way for students to showcase their knowledge and understanding of this important scientific concept.

Thermal energy transfer is the energy transfer between two or more objects that have different temperatures. This energy transfer can take place in three different ways: conduction, convection, and radiation. A portfolio is a collection of documents or pieces of work that demonstrate a person's skills, abilities, and achievements in a particular area.

Therefore, a thermal energy transfer portfolio would be a collection of documents or pieces of work that demonstrate a person's skills, abilities, and achievements related to thermal energy transfer. This portfolio could include lab reports, experimental data, diagrams, and explanations of the various ways thermal energy can be transferred.

For example, a student's thermal energy transfer portfolio might include:

1. A lab report detailing an experiment they conducted to measure the rate of heat transfer through different materials using conduction.

2. A diagram showing the process of heat transfer through convection in a fluid, such as air or water.

3. A written explanation of the concept of radiation and how it relates to thermal energy transfer.

4. A spreadsheet of data showing the temperature changes in a system as heat is transferred through it.

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When a positively charged rod is brought close to an uncharged electroscope, the electroscope will become polarized. This means that the electrons in the electroscope will move away from the positively charged rod and towards the far end of the electroscope.

This results in a separation of charges within the electroscope, with the far end becoming negatively charged and the near end becoming positively charged.

When one's finger touches the far side of the metal ball on the electroscope, any excess charge on the electroscope is conducted away by the finger. This effectively neutralizes the electroscope, since any excess charge has been transferred to the person's body.

When the finger is removed and the rod is taken away, the electroscope is still neutral. This is because the charge on the rod did not have enough time to transfer to the electroscope before it was neutralized by the finger. Therefore, the electroscope remains in its original uncharged state.

In summary, bringing a positively charged rod close to an uncharged electroscope will cause polarization, touching the electroscope with a finger will neutralize any excess charge, and removing the rod will not leave the electroscope with a net charge.

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The angle in radians through which the wheel rotates can be determined using the formula:

Angle (in radians) = (Number of revolutions) × (2π)

Given that the wheel is rotating at a rate of 16 rev/s for a time interval of 9 seconds, we can calculate the number of revolutions by multiplying the rate by the time:

Number of revolutions = (16 rev/s) × (9 s) = 144 rev

Substituting this value into the formula, we can find the angle in radians:

Angle (in radians) = (144 rev) × (2π) = 288π radians

Therefore, in a time interval of 9 seconds, the wheel rotates through an angle of 288π radians.

To understand why we use the formula Angle (in radians) = (Number of revolutions) × (2π), it's important to note that one revolution corresponds to an angle of 360 degrees or 2π radians. In this case, the wheel is rotating at a given rate, so multiplying the rate by the time gives us the number of revolutions. Multiplying the number of revolutions by 2π gives us the angle in radians.

By performing the calculations without using the listed phrases, we arrive at the result of 288π radians for the angle through which the wheel rotates in a time interval of 9 seconds.

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The flash and report method is a simple and common technique used to measure the speed of sound. In this method, an observer measures the time between seeing a flash, such as from a gunshot or a firecracker, and hearing the corresponding sound. The observer is usually at a known distance from the source of the flash and sound.

To perform the experiment, the observer stands at a fixed distance away from the source of the flash and sound. When the flash is seen, they start a stopwatch or use any other timing device. Once they hear the sound, they stop the timer and note the time difference between the flash and the sound. This time difference is the time it takes for the sound to travel from the source to the observer.

The speed of sound can then be calculated using the formula: speed of sound = distance / time taken. The distance between the observer and the source is divided by the time difference recorded to find the speed of sound in the medium (usually air).

It is essential to ensure that the distance between the source and the observer is accurate and that the observer's reaction time is considered when measuring the time difference. External factors such as temperature, humidity, and altitude also affect the speed of sound and should be taken into account.

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The probable question may be:

Discuss the measurement of the speed of sound using the flash and report method?

If you look away from the road for just two seconds, your chance of having a crash actually increases significantly. It is estimated that taking your eyes off the road for just two seconds doubles your risk of a collision.

This is because in that short amount of time, your vehicle can travel a considerable distance, and you may not be aware of potential hazards or changes in road conditions. It is essential to stay focused and alert while driving to ensure your safety and the safety of those around you.

A collision is an event in which two or more objects come into contact with each other, resulting in a transfer of energy and/or momentum between the objects. Collisions can be classified into different types based on the nature of the contact, the forces involved, and the resulting motion of the objects.

Elastic collisions occur when the objects bounce off each other without any deformation or loss of kinetic energy. In this type of collision, the total kinetic energy of the system is conserved. An example of an elastic collision is the collision between two billiard balls.

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Full question:

If you look away from the road for just two seconds, your chance of having a crash actually __________.

Looking away from the road for just two seconds significantly increases your chance of having a crash because it means you're not fully focused on driving. This lack of focus is a major cause of accidents. Therefore, continued attention on the road is vital.

If you look away from the road for just two seconds, your chance of having a crash actually increases significantly. This is because 2 seconds is a substantial amount of time in a high-speed situation, where situations and obstacles can arise suddenly. Taking your eyes off the road when driving means you are not fully focused on the task, which is a major cause of accidents. It is essential to maintain complete attention when driving to prevent potential hazards and to react quickly to changing circumstances.

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Has a proton and a neutron. has no neutrons and only one proton. Consequently, a neutron will be the additional particle on the product side.

The proton stays in the nucleus while the electron is released as a particle, increasing the atomic number without changing the mass number.

Several instances include: Fusion processes produce extra particles (often protons or neutrons) after the joining of two light nuclei to create a heavier one. Spallation occurs when a particle strikes a nucleus with enough energy and momentum to break it into numerous little fragments or knock off a few large ones.

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The three things that are connected in the system that causes us to see the moon's phases are the moon, the sun, and the Earth. As the moon orbits around the Earth, it also receives sunlight from the sun.

Depending on the moon's position in relation to the sun and the Earth, different portions of the moon's surface are illuminated. When the moon is between the sun and the Earth, we see the side of the moon that is not illuminated, which is known as the new moon phase. As the moon moves in its orbit, we see different portions of the illuminated side of the moon, which causes the different phases such as crescent, half-moon, and full moon. The changing phases of the moon occur due to the interaction of these three celestial bodies in the system, which is also known as the lunar cycle.

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Power is needed for (1) acceleration and (2) lifting the loaded chairs. These two parts can be calculated separately and then added together.

(1) Power for acceleration:

The final speed of the lift is

V=(10 km/h)(1 h×1000 m60 sec×1 km)=2.887 m/s.

Then the power needed is

Pa=12m(V2−V20)/Δt=12(50×250 kg)(2.778 m/s)2=9.6 kW.

(2) Power for lift

Assume that the acceleration is constant (i.e. power supply is constant), its value will be

a=ΔVΔt=2.778 m/s5 s=0.556 m/s2.

Then the vertical lift during acceleration will be

(12at2)×(2001000)=1.36 m.

Hence, the power needed to increase the potential energy of the lift is

Pg=mgΔhΔt=(50×250 kg) (9.89 m/s2)(1.36 m)/(5 s)=3.41 kW.

Then the total Power required is

Ptotal=Pa+Pg=9.6+34.1=43.7 kW.

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The set of capacitors with the smallest capacitance value will become effectively fully charged first.

Capacitance is the measure of an object's ability to store electric charge. The higher the capacitance, the more charge it can store. When capacitors are connected in parallel, they share the same voltage, but their capacitance values determine how much charge each one can hold. The capacitor with the smallest capacitance value will reach its maximum charge capacity with the smallest amount of charge and will become fully charged before the other capacitors. The capacitors with larger capacitance values will take longer to charge fully because they can store more charge.

In a parallel circuit, capacitors are connected across the same voltage source, which means they are charged with the same amount of voltage. However, the amount of charge that each capacitor can store depends on its capacitance value. Capacitance is measured in farads (F), and the higher the value of capacitance, the more charge a capacitor can store. When capacitors are connected in parallel, they share the same voltage, but their capacitance values determine how much charge each one can hold.

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We are given,

Since, we have to find voltage across 38 ohm resistor we will take R = 38

Similarly, You will have to take the Resistance through which you have to find the voltage...

Put the values,

\( \sf \: v = 0.4 \times 38 \\ \implies \: \sf \: v = 15.2\)

Thus, The voltage across the 38 ohm resistor is 15.2 V...

Answer:

v=10.78 m/s

Explanation:

Given that,

The student estimates that  the apple traveled 1.1 seconds straight down to the ground. We need to find the maximum velocity of the apple before it hit the ground. The initial velocity of the apple is equal to 0 as it was at rest. It will move under the action of gravity.

Using equation of motion to find it as follows :

v=u+at

a = g

⇒v=gt

v=(9.8 m/s²) × (1.1 s)

v = 10.78 m/s

So, the maximum velocity of the apple is 10.78 m/s.

Since the two charges are symmetrically positioned with regard to the origin and have equal magnitudes but opposite signs, the location where the electric field is zero is at the origin.

Using the formula for the electric field produced by a point charge, we can determine the location on the x-axis where the electric field is zero:

\(E = k*q/r^2\)

where r is the distance between the point charge and the location where the electric field is being measured, q is the charge of the point charge, E is the electric field, k is Coulomb's constant, and so on. The total electric field for the two charges in this issue may be determined at any location along the x-axis using the principle of superposition. The electric field vectors produced by the two charges will cancel out at some point along the x-axis because they are symmetrically positioned with respect to the origin and have opposite signs. We may determine the electric field vectors produced by each charge at various locations along the x-axis using the formula for the electric field produced by a point charge. We can determine the overall electric field at each place by combining these vectors together. We may determine the location where the electric field is zero by charting the total electric field as a function of the x-axis position. We discover that in this instance, the two charges produce identical, opposing electric fields that cancel one another out at the origin. Because of this, the origin is where the electric field is zero.

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If the Price Elasticity of Supply is greater than one, it means that sellers are sensitive to a change in price and will be willing to sell a lot more when the price increases. The correct option is b.

Price Elasticity of Supply (PES) measures the responsiveness of the quantity supplied of a good or service to a change in its price. When the PES is greater than one, it indicates a situation of elastic supply. In this case, sellers are highly sensitive to changes in price, and they will be willing to sell a lot more when the price increases.

A PES greater than one implies that the percentage change in the quantity supplied is greater than the percentage change in price. In other words, a small increase in price leads to a relatively larger increase in the quantity supplied. This suggests that sellers have the ability and willingness to adjust their production levels significantly in response to price changes.

On the contrary, if the PES is less than one, it indicates inelastic supply. In this scenario, sellers are less responsive to price changes, and the quantity supplied changes relatively less compared to the percentage change in price. A PES equal to one represents unitary elasticity, where the percentage change in price is matched by an equal percentage change in quantity supplied.

Therefore, when the Price Elasticity of Supply is greater than one, it signifies that sellers are sensitive to a change in price and are willing to sell a lot more as the price increases. Option b is the correct answer.

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Answer:

0.25

Explanation:

According to newtons law of motion

\sum F_x = ma

F_f =  ma

nR = ma

nmg = ma

ng = a

n = a/g

g is the acceleration due to gravity

Given

a = 2.42m/s²

g = 9.8m/s²

Substitute into the formula;

n = 2.42/9.8

n = 0.25

Hence the coefficient of kinetic friction is 0.25

TRUE

Explanation:

BECAUSE IT IS LIKE THE KEY WORD IN THAT SENTENCE.

Light travels at the exact speed of 299,792,458 meters (983,571,056 feet) per second in a vacuum.

The light passes through a 2.0-mm-thick section of window glass

= 1 × \(10^{-14}\)    sec

Speed is defined as the rate at which an object's position changes in any direction. Speed is calculated as the ratio of distance traveled to time spent traveling. Speed is a scalar quantity because it has a direction but no magnitude. The SI unit of speed is milliseconds per second.

There are several types of speeds:

Speed is the street name for amphetamine sulphate, but it can also refer to other amphetamines. It's usually an off-white or pinkish powder that resembles crystals. It is also available in the form of a paste, which is usually white/grey or brown in color and can be damp and gritty.

Hence,

A thick piece of window glass = 2 mm

speed of light in medium = speed of light in vacuum / refractive index

      = (3×\(10^{8}\))/1.5  

       = 2 ×\(10^{8}\) m/s                                           

Time = distance / speed  

      = (2 × \(10^{-3}\) )/(2 × \(10^{-11}\))

      = 1 × \(10^{-14}\)    sec

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The resultant force due to the cumulative forces acting on the body is 6i+6j N.

Force is a vector quantity and the direction in which they act affects the total magnitude of force. A vector quantity has both magnitude and direction.

And to add a vector one needs to take account of the direction as well.

The force acting on the body can be written as follow:

1. 10N along x-axis ---- 10i

2. 6N along y-axis ---- 6j

3. 4N along negative x-axis ----- -4i

The resultant force is the sum of the above vector:

10i +6j + (-4i) = 6i+6j N

The magnitude of the total force is

\(\sqrt{6^2+6^2}\\ =\sqrt{36+36}\\ =\sqrt{72}=6\sqrt{2} N\)

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The complete question is:

Find the resultant of the following forces

(i) 10 N along the x-axis

(ii) 6 N along the y-axis

(iii) 4 N along the negative x-axis

Answer:

hmmm

Explanation:

error of parallax or poor measurement

poor structural material

Option D; A great strength of correlational research is the fact that it occurs in real-world settings.

When doing correlational research, which is a type of nonexperimental study, the researcher examines two variables and assesses their statistical relationship (i.e., the correlation) with little to no effort made to account for unrelated variables. Since it helps us to ascertain the magnitude and direction of correlations between two variables, correlational research is helpful. Contrarily, correlation is limited since it only provides evidence of a link and provides little information about its underlying mechanisms. Through the correlational method, relationships between variables are sought. For instance, a researcher would be interested to know if a user's privacy preferences in a social networking software are influenced by their personality, IQ, level of education, employment status, age, gender, income, and other factors

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Given,

The weight, W = 190 N

The height, H = 45 m

The potential energy is calculated by the formula,

Calculate the potential energy by substituting the given values.

Thus, the potential energy is 8,550 Joules.

Newton's Law of Cooling is described by the first-order linear differential equation dt/dT = k(T - Ts), where T(t) is the temperature of the object at time t, Ts is the surrounding environmental temperature, and k is the constant of proportionality.

The temperature of an object, governed by Newton's Law of Cooling

(i) To find the temperature of the object as a function of time, we first solve the differential equation dt/dT = k(T - Ts). This is a separable differential equation, and the solution can be obtained by rearranging and integrating:

dt/dT = k(T - Ts)

dt = k(T - Ts) dT

∫ dt = ∫ k(T - Ts) dT

t = k * ∫ (T - Ts) dT

t = k * (T^2/2 - Ts*T) + C

Now, we apply the initial condition T(0) = T0. At t=0, the temperature of the object is T0:

T(0) = T0

k * (\(T0^2\)/2 - Ts*T0) + C = T0

C = T0 - k * (\(T0^2\)/2 - Ts*T0)

C = T0 - k * (\(T0^2\)- 2 * Ts * T0) / 2

C = T0 - k * (\(T0^2\) - 2 * Ts * T0) / 2

So, the equation becomes:

t = k * (\(T^2\)/2 - Ts*T) + (T0 - k * (\(T0^2\)- 2 * Ts * T0) / 2)

(ii) Now, we can find the temperature of the object after 5 minutes (t = 5 minutes). We'll use the initial condition T(0) = T0 and the formula obtained in part (i):

t = 5 minutes = 5/60 hours = 1/12 hours

T(t) = Ts + (T0 - Ts) * exp(-kt)

T(1/12) = Ts + (T0 - Ts) * exp(-k * (1/12))

This equation gives us the temperature of the object after 5 minutes, considering the given initial temperature T0 and the surrounding environmental temperature Ts.

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Answer:

I = 1.666... amps

Explanation:

P = I*V or Power = Current * Voltage

(100 watts) = I * (60 Volts)

I = 1.666... amps