The reading on a spring balance with a holder and eight identical discs is 3.0n. six discs are removed and the reading becomes 1.2n what is the weight of one disc?

Answer:

Molar mass of CrF3, Chromium(III) Fluoride is 108.9913096 g/mol

51.9961+18.9984032·3

Mass percentage of the elements in the composition

Element Symbol Atomic Mass Number of Atoms Mass Percent

Chromium Cr 51.9961 1 47.707%

Fluorum F 18.9984032 3 52.294%

Notes on using the Molar Mass Calculator

Chemical formulas are case-sensitive.

Enter subscripts as simple numbers.

The converter uses a simple dot instead of using a midpoint typographic dot (·) in formulas for adduct molecules, such as water of hydration.

Example: type CuSO4.5H2O instead of CuSO₄·5H₂O.

Explanation:

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Answer:

11

Explanation:

i've been in k12 and i got an a on this anser

Answer:

Dude this is based on some egg you have

Explanation:

Answer:

Explanation:

Given:

P = 12 W

R = 270 Ω

t = 2.5 s

____________

Q - ?

Power:

P = I²·R

Current strength:

I = √ (P / R) = √ (12 / 270) ≈ 0.21 A

Charge:

Q = I·t = 0.21·2.5 = 0,525 C

We know, Work done by all the forces is equal to change in potential energy :

\(W_{friction} + W_{air} + W_{engine} = \dfrac{(mv_f^2 + mgh_f)}{2}-\dfrac{(mv_i^2+mgh_i)}{2}\)

Here,

\(h_i=0\ m\\\\v_i = 0\ m/s\)

Putting all given values, we get :

\(W_{friction} + W_{air} + 5.10\times 10^6 = m\dfrac{(v_f^2 + gh_f)}{2}-0\\\\W_{friction} + W_{air} =1.5\times 10^3 \times \dfrac{(24^2 + (9.8\times 2.2\times 10^2))}{2}-5.10\times 10^6\\\\W_{friction} + W_{air} = -3.051\times 10^6\ J\)

Hence, this is the required solution.

Answer:

B

Explanation:

The impulse experienced by an object is the force•time.

The ball will be caught by the thrower's right. The correct answer is option d.

When the merry-go-round is spinning counterclockwise, the person throwing the ball and the ball itself will have a tangential velocity in the counterclockwise direction. As the ball leaves the thrower's hand, it will continue to move in a straight line with this tangential velocity.

However, the ball is also subject to the circular motion of the merry-go-round, which means it will also have a centripetal acceleration towards the center of the merry-go-round.

As a result, the ball will follow a curved path towards the right of the thrower and will be caught by the thrower's right hand.

So, the correct answer is d. the ball caught to the thrower's right.

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Answer:

They are buried in the ground due to weathering and erosion

Explanation:

Answer:

They are buried in the ground due to weathering and erosion.

There are two points along the line where the electric field is zero: one at a distance of 0.147 m from the 0.24 charge and another at a distance of 0.302 m from the 0.24 charge.

To find the point along the line between the two charges where the electric field is zero, we can use the principle of superposition, which states that the electric field at a point due to multiple point charges is the vector sum of the electric fields due to each individual charge.

Let's call the distance from the 0.24 charge to the point where the electric field is zero "x". The distance from the 0.73 charges to the same point is "0.45 - x" (since the two charges are 0.45 m apart). We want to find the value of x that makes the electric field at that point zero.

Coulomb's law gives the electric field at a distance r from a point charge q:

E = k * q / r^2

where k is Coulomb's constant (8.99 x 10^9 N m^2 / C^2).

So, the electric field at the point x due to the 0.24 charge is:

E1 = k * 0.24 / x^2

And the electric field at the same point due to the 0.73 charge is:

E2 = k * 0.73 / (0.45 - x)^2

Since the total electric field at the point x is zero, we can set E1 + E2 = 0 and solve for x:

k * 0.24 / x^2 + k * 0.73 / (0.45 - x)^2 = 0

Multiplying both sides by x^2 (0.45 - x)^2, we get:

0.24 (0.45 - x)^2 + 0.73 x^2 = 0

Expanding and simplifying, we get:

0.2142 x^2 - 0.2052 x + 0.0591 = 0

Using the quadratic formula, we can solve for x:

x = [0.2052 ± sqrt(0.2052^2 - 4 * 0.2142 * 0.0591)] / (2 * 0.2142)

x ≈ 0.147 m or x ≈ 0.302 m

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When you are standing in front of a flat mirror and focus a camera on your image, the camera will focus at a distance equal to the distance between the mirror and the object from the camera. Here, the camera focuses on the image of the person standing in front of the mirror.

When you are standing in front of a flat mirror and focus a camera on your image, the camera will focus at a distance equal to the distance between the mirror and the object from the camera. Here, the camera focuses on the image of the person standing in front of the mirror. Therefore, if the camera is in focus when set for a distance of 5.56 m, the object is also 5.56 m away from the mirror, as the image and the object are at the same distance from the mirror.

Image:
The image shows the object and its image reflected by a flat mirror. The distance between the mirror and the object, which is equal to the distance between the mirror and its image, is represented by "d." To find the distance between the person and the mirror, we have to take the distance between the person and the image into account. Since the image is the same distance behind the mirror as the person is in front of the mirror, the total distance between the person and the mirror is twice the distance between the person and the image. The total distance "D" is given by:

D = 2dwhere d = 5.56 m

Thus, the person is standing at a distance of D = 2 x 5.56 = 11.12 m from the mirror. Therefore, the distance between the person and the mirror is 11.12 m. So, the answer is 11.12 m.  In conclusion, the distance between the person and the mirror is 11.12 m.

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Answer:

plato answer.

Explanation:

The resistance of the hardened copper rod is approximately 0.677 ohms.

To compute the resistance of a hardened copper rod, we need to use the formula for resistance:

Resistance (R) = Resistivity (ρ) x Length (L) / Cross-sectional Area (A)

Convert length to meters:

The length of the rod is given as 2 meters, so no conversion is required.

Convert diameter to meters and calculate the cross-sectional area:

The diameter of the rod is given as 8 mm. To calculate the cross-sectional area, we need to convert the diameter to meters.

Diameter (d) = 8 mm = 8 x 10^(-3) meters (1 mm = 10^(-3) meters)

To calculate the cross-sectional area, we use the formula:

Area (A) = π x (diameter/2)^2

Plugging in the values:

A = π x (8 x 10^(-3) / 2)^2 = π x (4 x 10^(-3))^2 = π x 16 x 10^(-6) = 50.27 x 10^(-6) m^2

Determine the resistivity of copper:

The resistivity (ρ) of copper is a material property and is typically given in ohm-meters (Ωm). The resistivity of copper is approximately 1.7 x 10^(-8) Ωm.

Calculate the resistance:

Using the formula for resistance, we can substitute the values:

R = (1.7 x 10^(-8) Ωm) x (2 m) / (50.27 x 10^(-6) m^2)

Simplifying the expression:

R = 0.677 Ω

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the speed of sound in air is 343 m/s. Option d (343 m/s) is the correct answer.

How to solve the question?

The speed of sound in air can be calculated using the formula:

v = d/t

Where v is the speed of sound, d is the distance traveled by the sound wave, and t is the time taken for the sound wave to travel that distance.

In this problem, we are given that the distance between the chime and the observer is 515 m, and the time taken for the sound wave to travel this distance is 1.50 s. So, we can use the above formula to calculate the speed of sound:

v = d/t = 515/1.5 = 343 m/s

Therefore, the speed of sound in air is 343 m/s.

Option d (343 m/s) is the correct answer.

It's worth noting that the speed of sound in air can be affected by various factors such as temperature, humidity, and pressure. At a standard temperature of 20°C and normal atmospheric pressure, the speed of sound in air is approximately 343 m/s. However, this value can vary depending on the conditions in which the sound wave is traveling.

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A force of 180lb is needed to stretch the spring 9in beyond its natural length.

Fs = kx is the equation for Hooke's Law.

We can use this formula to solve your problem. we can find the spring constant k by dividing the force by the distance:

k = F/s = 120lb/6in = 20lb/in

Now we can use this value of k to find out how much force is needed to stretch the spring 9in beyond its natural length:

F = ks = 20lb/in * 9in = 180lb

A force in physics is an effect that causes the motion of an object with mass to alter its velocity (e.g., moving from a state of rest), i.e., to accelerate. It can be a push or a pull, but it always has magnitude and direction, making it a vector quantity. It is measured in newtons (N) and is symbolized by the sign F (previously P).

The original phrasing of Newton's second law says that the net force exerted on an item is equal to the rate at which its momentum changes over time. If the item's mass remains constant, this rule means that the acceleration of an object is precisely proportional to the net force applied on the object.

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Answer:

Fourth harmonic

Explanation:

As you can see each of the waves altitudes appear to be equivalent within both the crest and trough. Not only that but the wavelengths as well appear to be exactly similar. Therefore, providing me with the estimation of fourth harmonic.

The stereo microphone technique that works only from level differences produced by off-axis attenuation is called Mid-Side (M-S) stereo recording.

Mid-Side (M-S) stereo recording technique utilizes two microphones, one of which is pointed directly at the sound source and the other pointing 90 degrees to the left or right. The result is two channels of audio which are then combined in the mixing process to create a full stereo image. The two signals have a 3 dB difference in level between them, with the off-axis microphone being the lower of the two. This level difference produces the stereo image and is the only factor used in M-S stereo recording. Time delays are not used in this technique, as the level differences are sufficient to create the stereo image.

M-S stereo recording has a number of benefits, such as being able to adjust the width of the stereo image in the mixing process, and allowing for mono compatibility. It is therefore a great choice for stereo recordings that need to be heard in both mono and stereo, such as live broadcasts or online streams.

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Given data:

* The distance traveled is 346 m.

Solution:

Let m be the mass of the body.

Then, the gravitational potential energy of the body on reaching the top of the tower is,

where g is the acceleration due to gravity, and h is the height of the tower,

As mg is the weight of the body.

Substituting the known value,

where w is the weight of the body,

When a person walks to the certain height, the internal energy of the person's body is converted into the gravitational potential energy.

Answer: : it is so because velocity and speed differ each other by direction. in a 100 m sprint race ,the person moves in a straight path without changing its direction where as in a 400 m race , the person moves in a lap around the race track and the direction changes as he turns according to the race track.

Explanation:

Explanation:

Its organism are one cell I think

True. cloud may appear dark in visible light, it may still emit radiation at longer infrared wavelengths, leading to a glowing appearance when observed with infrared instruments.

Clouds that appear dark in visible light may contain small particles or droplets that absorb visible light and scatter it in different directions, making the cloud appear dark or opaque. However, these same particles may also emit radiation in the long infrared range, causing the cloud to glow when observed at those wavelengths. Infrared radiation has longer wavelengths than visible light and can penetrate through some of the opaque materials that block visible light. When infrared radiation encounters the small particles or droplets within a cloud, it can cause them to vibrate, which in turn causes them to emit radiation in the infrared range.

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Answer:r other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. The simplest example of visible light reflection is the surface of a smooth pool of water, where incident light is reflected in an orderly manner to produce a clear image of the scenery surrounding the pool. Throw a rock into the pool (see Figure 1), and the water is perturbed to form waves, which disrupt the reflection by

Explanation:

Activity: Is it the same?!

Reflection of light (and other forms of electromagnetic radiation) occurs when the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. The simplest example of visible light reflection is the surface of a smooth pool of water, where incident light is reflected in an orderly manner to produce a clear image of the scenery surrounding the pool. Throw a rock into the pool (see Figure 1), and the water is perturbed to form waves, which disrupt the reflection by scattering the reflected light rays in all directions.

Some of the earliest accounts of light reflection originate from the ancient Greek mathematician Euclid, who conducted a series of experiments around 300 BC, and appears to have had a good understanding of how light is reflected. However, it wasn't until a millennium and a half later that the Arab scientist Alhazen proposed a law describing exactly what happens to a light ray when it strikes a smooth surface and then bounces off into space.

In this activity you will be working as an engineer that is working to modify different kinds of digital cameras and to study the effect of changing incident angle on the reflected angle.

Method

Explain the steps of your experiment and identify the scientific variables:

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

• Independent Variable

----------------------------------------------------------------------------------------------------------------

• Dependent Variable

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

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The number of waves present in the picture is one wave

The wavelength of the wave is 5 cm

The frequency of the wave is the number of waves per second.

The period of the wave is the time taken for one complete wave oscillation.

The speed of the wave is the distance covered per second

The properties of a wave are the characteristics that are used to identify waves.

The properties of waves include:

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The forces acting on the 0.100 kg ball as the child twirls it in a horizontal circle along the floor are tension and centripetal force.

Tension is the force exerted by the string on the ball, pulling it towards the center of the circle. This force is a result of the child holding the string and causing the ball to move in a circular path. The tension force keeps the ball from flying off in a straight line according to Newton's first law of motion.

Centripetal force is the net force that acts on the ball towards the center of the circle, causing it to move in a circular path. In this case, the tension in the string provides the centripetal force needed to keep the ball moving in a circle. Centripetal force is given by the formula F_c = m*v^2/r, where m is the mass of the ball (0.100 kg), v is its speed (2.0 m/s), and r is the radius of the circle (1.0 m). The centripetal force in this scenario is the same as the tension force in the string since there are no other forces acting horizontally on the ball.

In summary, the tension force in the string and the centripetal force keep the 0.100 kg ball moving in a horizontal circle with a speed of 2.0 m/s. These forces are necessary for maintaining the circular motion and preventing the ball from flying off in a straight path.

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The right upper quadrant of the body contains the liver, which would produce a dull percussion noise.

What is midclavicular line?

The midclavicular line is one of the surface reference lines used in the surface anatomy of the thorax.

Midway through the clavicle's body, a parasagittal vertical plane pierces the bone. While the lateral section of the clavicle is situated near to the highest point of the shoulder joint, the head (medial aspect) lies just lateral to the jugular notch of the sternum, a depression in the superior area of the sternal manubrium (the acromioclavicular joint).

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Answer: Conductor, semiconductor, insulator

Explanation:

Just did the quiz

The correct option is option A.

The descending order in which electrons flow easily is:

Conductor, semiconductor, insulator

The correct order for materials by their ability to allow the flow of electrons, from most easily to least easily is Conductor, semiconductor, insulator.

Conductors are generally metals, they have plenty of free electrons due to which the electron flow is easy. Also, the conduction band and valance band in a conductor overlap, so they can conduct at room temperature.

In the case of semiconductors, the band gap between the conduction band and valance band is almost 1eV, so a little energy is enough to make the flow of electrons possible

Whereas, in insulators, the band gap is quite high and electrons can not jump from the conduction band to the valence band due to which the flow of electrons is not possible.

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By conversion unit, the length in meters of green light wavelength is 5 x 10¯⁷ m.

We need to know about a conversion unit to solve this problem. Meter is the SI unit for length but there are other units which able to determine the length such as nanometer. The conversion unit of nanometer to meter is

1 nm = 10¯⁹ m

From the question above, we know that the wavelength of green is 500 nanometers. in a meter, we can write as

500 nm = 500 x 10¯⁹ m

500 nm = 5 x 10¯⁷ m

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Answer:

The best sources of essential amino acids are animal proteins like meat, eggs and poultry. When you eat protein, it's broken down into amino acids, which are then used to help your body with various processes such as building muscle and regulating immune function ( 2 ).

Explanation:

Answer:

\( \color{red}\rule{10pt}{10pt} \color{pink}\rule{10pt}{10pt}\color{yellow}\rule{10pt}{10pt}\color{blue}\rule{10pt}{10pt}\color{green}\rule{10pt}{10pt}\color{royalblue}\rule{10pt}{10pt}\color{black}\rule{10pt}{10pt}\color{white}\rule{10pt}{10pt}\color{purple}\rule{10pt}{10pt}\color{magenta}\rule{10pt}{10pt}\color{orange}\rule{10pt}{10pt}\color{brown}\rule{10pt}{10pt}\color{lime}\rule{10pt}{10pt}\)

Answer: it is 11.8 for Acellus

Explanation:

If the dart got stuck to the spring then the period of this oscillation will be 0.11 s.

Simple harmonic motion is a specific kind of periodic motion of a body that arises from a dynamic equilibrium between an inertial force that is proportional to the body's acceleration away from the static equilibrium position and a restoring force on the moving object that is directly proportional to the magnitude of the object's displacement and acts towards the object's equilibrium position. If friction or any other energy dissipation is not present, it leads to an oscillation that is represented by a sinusoid and that lasts indefinitely. Oscillating spring perform SHM

The differential equation for SHM is given by,

\(\frac{d^2x}{dt^2} + \sqrt{\frac{k}{m}} x=0\)

the period of the system is given by

ω²=2π√(m/k).

Given,

k = 220 N/m.

m = 0.069 kg

x =0.07

Putting values in the equation, we get

T=2π√(0.069/220)

T = 0.11 s

Hence period the oscillation is 0.11 s.

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