what is [ca2 ] in a saturated solution of ca3(po4)2 that has [po43−] = 1.0×10−2 m ?

The resistivity of the material of the wire can be calculated using the formula: resistivity = (resistance x cross-sectional area) / length. In this case, the resistivity of the material is 3.33 x 10^-7 ohm-meter.

The resistivity of a material is a measure of how strongly it opposes the flow of electric current. It is denoted by the symbol ρ (rho). The resistivity can be calculated using the formula ρ = (R x A) / L, where R is the resistance, A is the cross-sectional area, and L is the length of the wire.

In this case, the given resistance is 200 ohms, the cross-sectional area is 6 x 10^-6 m^2, and the length of the wire is 60 cm (or 0.6 m). Plugging these values into the formula, we get ρ = (200 ohms x 6 x 10^-6 m^2) / 0.6 m = 2 x 10^-3 ohm-meter.

Therefore, the resistivity of the material of the wire is 3.33 x 10^-7 ohm-meter. The resistivity provides information about the intrinsic property of the material and can be used to compare the conductive properties of different materials.

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Answer:

The first one is: His weight on the Earth before take-off and the weight after take-off back on Earth once he gets back should be recorded as his Independent variable and his dependent variable.

The second one is: If he gained the weight back that he had lost while on the trip then you should disregard them unless that was the weight he was when he weighed himself after he got back.

The Third one is: The mass of an object is the amount of matter it contains, regardless of its volume or any forces acting on it. … Gravity is a force that attracts objects toward the Earth. The weight of the object is defined as the force caused by gravity on a mass.

Explanation:

I took  the quiz earlier. Hope this Helps you.

Answer:

b. the wire will become warmer

Explanation:

The change that will occur in the wire of an electrical circuit working properly is that the wire will become warmer.

The reason for this is that some of the electrical energy will be converted to heat or thermal energy.

The current at point A = 3A, The current at B = 6 A, the current at C = 2.25 A, the current at D = 18 A.

The current flowing in the circuit is calculated as follows;

Same current will be flowing at point A and C since they are in series, while different current will be flowing in the rest of the circuit.

Total resistance  is calculated as;

1/R = 1/(3 + 9) + 1/6 + 1/2

1/R = 1/12 + 1/6 + 1/2

R = 1.33

The total current in the circuit;

I = V/R

I = 36 V / 1.33

I = 27 A

Current at B = 36 / 6 = 6 A

Current at D = 36 / 2 = 18 A

Current at A and C = 27 A - (6 + 18)A = 3 A

Current at A = 3 / 12 x 3 A = 0.75 A

current at C = 9 / 12  x 3A = 2.25 A

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Together, Stage 3 sleep and Stage 4 sleep are called "slow-wave sleep" or "delta sleep." Slow-wave sleep is a deep and restorative stage of sleep characterized by slow brain waves, reduced muscle activity, and difficult arousal. It is considered a non-rapid eye movement (NREM) sleep stage.

During slow-wave sleep, the brain and body undergo important physiological processes, including tissue repair, immune system maintenance, and memory consolidation. It is typically experienced in the first half of the night, and the amount and duration of slow-wave sleep decrease as the night progresses.

The distinction between Stage 3 sleep and Stage 4 sleep is based on the proportion of delta waves (slow, high-amplitude brain waves) present in the EEG (electroencephalogram) recording. Stage 3 sleep consists of 20-50% delta waves, while Stage 4 sleep, also known as "deep sleep," is characterized by more than 50% delta waves.

In recent years, the classification of sleep stages has been updated, and the specific distinction between Stage 3 and Stage 4 sleep is no longer used in the standardized sleep scoring system. Instead, NREM sleep is categorized as N1, N2, and N3, with N3 encompassing the deeper stages of slow-wave sleep.

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The maximum kinetic energy of the photoelectrons when light of wavelength 300.0 nm falls on the same surface is 1.83 eV.

The maximum kinetic energy of the photoelectrons when light of wavelength 300.0 nm falls on the same surface is 1.83 eV.Step-by-step explanation:

Given, The wavelength of light, λ₁ = 400.0 nm.

The maximum kinetic energy of the emitted photoelectrons, K₁ = 1.10 eV. We need to find the maximum kinetic energy of the photoelectrons when light of wavelength 300.0 nm falls on the same surface.

We know that the maximum kinetic energy of the photoelectrons is given byK.E = (hc/λ) - Φwherehc = 4.14 x 10⁻¹⁵ eV s.

Planck's constant = 6.63 x 10⁻³⁴ JsΦ = work function of the metal surface.

The work function of the metal surface is the energy required to remove an electron from the metal surface. It is the minimum energy required to emit an electron from the surface of the metal.

For metals, it lies between 2 eV and 6 eV. We can write K. E₁ = (hc/λ₁) - ΦK.E₂ = (hc/λ₂) - ΦDividing equation (1) by equation (2), we getK.E₁/K.E₂ = λ₂/λ₁.

Substituting the given values, we get

1.10 eV/K.E₂ = 300.0 nm/400.0 nmK.E₂ = (1.10 eV)(400.0 nm)/(300.0 nm)K.E₂ = 1.83 eV

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Answer:

Costa Rica

Explanation:

a. The third sphere must be placed between A and B, closer to A.

b.  the third sphere must be placed at 175 cm from the first sphere.

Since

Using Newton's law of universal gravitation, the net force on the first sphere on the third sphere is F = mAmC/x² where x = distance between sphere C and A

Also, the Force of attraction between there second sphere and the third sphere is F' = mBmC/(R - x)² where R = distance between mA and mB and x = distance between mA and mC.

Since the net force must be zero, then

F = F'

mAmC/x² = mBmC/(R - x)²

So, (R - x)²/x² = mB/mC/mAmC

(R - x)²/x² = mB/mA

Substituting the values of mA and mB into the equation, we have

(R - x)²/x² = 7/2

(R - x)²/x² = 3.5

(R - x)/x = √3.5

(R - x)/x = 1.87

R - x = 1.87x

R = x + 1.87x

R = 2.87x

x = R/2.87

x = 0.35R

Since x = 0.35R, the third sphere must be placed between A and B, closer to A.

Since the position of the third sphere is

So, x = 0.35 × 500 cm

x = 175 cm

So, the third sphere must be placed at 175 cm from the first sphere.

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Answer:

True

Explanation:

A hypothesis is an educated guess, it does not have to be right.

Answer:

The theory of relativity usually encompasses two interrelated theories by Albert Einstein: special relativity and general relativity, proposed and published in 1905 and 1915, respectively. Special relativity applies to all physical phenomena in the absence of gravity. General relativity explains the law of gravitation and its relation to other forces of nature.It applies to the cosmological and astrophysical realm, including astronomy.

The theory transformed theoretical physics and astronomy during the 20th century, superseding a 200-year-old theory of mechanics created primarily by Isaac Newton. It introduced concepts including spacetime as a unified entity of space and time, relativity of simultaneity, kinematic and gravitational time dilation, and length contraction. In the field of physics, relativity improved the science of elementary particles and their fundamental interactions, along with ushering in the nuclear age. With relativity, cosmology and astrophysics predicted extraordinary astronomical phenomena such as neutron stars, black holes, and gravitational waves

Answer: The Torro Hailstorm Intensity Scale

Explanation:

Answer:

a. 3.46 m/s

b. 1.15 s

Explanation:

Given:

Δx = 2 m

v₀ = 0 m/s

a = 3 m/s²

a. Find v

v² = v₀² + 2aΔx

v² = (0 m/s)² + 2 (3 m/s²) (2 m)

v = 3.46 m/s

b. Find t

Δx = v₀ t + ½ at²

2 m = (0 m/s) t + ½ (3 m/s²) t²

t = 1.15 s

Answer:

a. 3.46 m/s

b. 1.15 s

Explanation:

Answer:

1 Atm (atmospheric pressure) is equal to 101325 pascal (Pa). To convert atm to pascal, multiply the atm value by 101325. atm to pascal formula. Pa = atm * 101325.

Explanation:

The heat energy for water used to raise the temperature by one degree Celsius is 4.15 J. Then temperature change in 200 g water using 9000 cal is 453 °C.

Specific heat capacity of a substance is the energy required to raise the temperature by 1 degree Celsius by one degree per one gram of the substance.

The specific heat of water is 0.415 J/°C g. Then the heat energy required by 200 g is  : 200 g × 0.415 J/°Cg  = 83 J/°C.

83 J of heat energy is required by 200 g of water to raise temperature by one degree Celsius. Then the temperature that can be made by 9000 cal energy is:

1 cal = 4.18 J

9000 cal = 37620 J

83 J is required for one degree. Then temperature change by 37620 J is:

37620 J/80 J°C = 453°C.

Therefore, the temperature change of water will be 453°C.

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Answer:

solution given:

acceleration (a)=?

initial velocity (u)=3m/s

final velocity (v)=6m/s

distance (s)=90m

we have

v²=u²+2as

substituting value

6²=3²+2*a*90

36=9+180a

36-9=180a

a=25/180

a=0.1388m/s²

Answer:

The acceleration of dog is 0.15 m/s².

Step-by-step explanation:

Given :

To Find :

Using Formula :

\(\star{\underline{\boxed{\sf{\purple{{v}^{2} = {u}^{2} + 2as}}}}}\)

Solution :

Substituting all the given values in the formula to find acceleration :

\({\longrightarrow{\sf{{v}^{2} = {u}^{2} + 2as}}}\)

\({\longrightarrow{\sf{{6}^{2} = {3}^{2} + 2 \times a \times 90}}}\)

\({\longrightarrow{\sf{{6 \times 6}= {3 \times 3} + 2 a \times 90}}}\)

\({\longrightarrow{\sf{36=9 + 180a}}}\)

\({\longrightarrow{\sf{36 - 9 = 180a}}}\)

\({\longrightarrow{\sf{27 = 180a}}}\)

\({\longrightarrow{\sf{a = \dfrac{27}{180}}}}\)

\({\longrightarrow{\sf{a \approx 0.15}}}\)

\(\star{\underline{\boxed{\tt{\red{a \approx 0.15 \: m/s^{2} }}}}}\)

Hence, the acceleration of dog is 0.15 m/s².

\(\rule{300}{1.5}\)

Answer:

Explanation:

Mass = 50kg +7kg +4kg =61 kg

Velocity = 3m/s

Momentum = mass × velocity

\(p =61\times 3\\\\p =183MLT^-^1\)

Answer:

Mass= 61 kg. Success to The homework.

The zipline is 59.06 feet long; it would be x feet long if it were a different length. DJ wants to set up a zipline in the space between two trees.

Length can be measured in a variety of ways, including handspan, foot span, meters, inches, and millimeters. Standard units of measuring length and non-standard units of measuring length are the two categories into which the units of measuring length can be divided. Look at the table below that displays length units.

A segment's or a room's dimensions are examples of things that can be measured in terms of length. Distance is the separation between two things, like two cities or two points.

Length=√a²+b²

Length=√28²+52²

Length=√784+2,704

Length=√3,488

Length=59.06ft

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Answer:

eukaryotic cells

Explanation:

"Smooth endoplasmic reticulum (sER) is (a part of) endoplasmic reticulum that is tubular in form and lacks ribosomes. It is present in eukaryotic cells and is associated with lipid synthesis, carbohydrate metabolism, regulation of calcium concentration, and drug detoxification"

source: biologyonline

Answer:

v = -\frac{n \ m}{M} \ v'

for the man to return to the ship he must throw the balls in the opposite direction of the ship

Explanation:

For this exercise we can use the conservation of momentum. Let's form a system made up of man and baseballs.

Initial instant. Before throwing the balls

     p₀ = 0

Final moment. After throwing the balls

     \(p_{f}\) = M v + n m v '

where M is the mass of the man, m is the mass of each ball and n is the number of balls , v isthe speed man and v' is the speed ball

Since the forces are internal, the momentum of the system is conserved

     p₀ = p_{f}

      0 = M v + n m v ’

      \(v =- \frac{n \ m}{M} \ v'\)

If we analyze this expression, for the man to return to the ship he must throw the balls in the opposite direction of the ship

Answer:

Explanation:

The answer is C

The magnitude of the force the dart exerted on the board is 50 Newton.

The definition of force in physics is: The push or pull on a mass-containing item changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. A spring balance can be used to calculate the Force. Newton is the SI unit of force.

Given parameters:

Mass of the dart: m= 0.040 kg.

Momentum of the dart: p = + 1.5 kg m/s.

Time required to stop = 0.030 seconds.

Hence, the magnitude of the force the dart exerted on the board is =

change in momentum/time

= (1.5 - 0.040×0)/0.030 Newton

= 50 Newton.

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Answer:

v = 30 /1500= 0.02 m/s

................

Answer:

Do you have a picture of your work?, Maybe i could help with it if you did.

Answer:

Hi, can you send the list of topics? I'd be happy to help you review. Also, did you meet with your instructor to complete the discussion-based assessment?

Explanation:

The current in each resistor is 4 A, 2 A, and 4 A, respectively. The voltage drop across each resistor is 12 V.

When three resistors are connected in series with a six resistor and a 12-volt battery, the total resistance of the series circuit is R = R1 + R2 + R3 + ...

The current flowing through the circuit is the same at every point. So, if we want to know the current flowing through each resistor, we need to use Ohm's law, I = V/R, where V is the voltage of the battery and R is the resistance of each resistor.

I1 = V/R1 = 12/3 = 4 AI2 = V/R2 = 12/6 = 2 AI3 = V/R3 = 12/3 = 4 A. The voltage drop across each resistor can be calculated using Ohm's law, V = IR.

V1 = I1R1 = 4 x 3 = 12 VV2 = I2R2 = 2 x 6 = 12 VV3 = I3R3 = 4 x 3 = 12 V.

Therefore, the current in each resistor is 4 A, 2 A, and 4 A, respectively. The voltage drop across each resistor is 12 V.

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Answer:

The striped magnetic pattern develops because, as oceanic crust pulls apart, magma rises to the surface at mid-ocean ridges and spills out to create new bands of ocean floor. Later, after the planet’s magnetic field flips again, the next stripe of new ocean floor aligns its polarity.

Explanation:

hope this helps!

the force will be 4 units

Consider two objects of masses m1 and m2

, separated by a distance r.

According to Newton's law of gravitation,

F=(G M1 m2)/r²

On doubling the distance between two masses the gravitational force between them will become one-fourth.

16 x 1/4= 4 units

All electromagnetic waves travel at the same speed in a vacuum, which is 300,000 km/sec (186,000 mph). This results from the electromagnetic waves' oscillating nature.

In general, we say that light moves in waves and that all electromagnetic radiation moves through a vacuum at a speed of around 3.0 * 108 meters per second. Nothing can move faster than the speed of light, which is what we refer to as.

The universal scientific constant known as c—the speed of light in a vacuum—is significant in many branches of physics. The exact value of the speed of light, c, is 299,792,458 meters per second.

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1. The direction of the magnetic field at the center of the loop is perpendicular to the plane of the loop and follows the right-hand rule.

The right-hand rule states that if you curl the fingers of your right hand in the direction of the current flow in a loop, your thumb will point in the direction of the magnetic field at the center of the loop. The magnetic field lines are circular and perpendicular to the plane of the loop.

2. The expression for the magnitude of the magnetic field at the center of the arc can be calculated using the formula for the magnetic field due to a circular loop of wire. The expression is given by: B = (μ₀ * I) / (2 * r), where B is the magnetic field, μ₀ is the permeability of free space, I is the current in the loop, and r is the radius of the arc.

The magnetic field at the center of the arc formed by the right-angle bend in the wire can be calculated using the formula for the magnetic field due to a circular loop of wire. The magnetic field strength is directly proportional to the current in the loop (I) and inversely proportional to the radius of the arc (r). The permeability of free space (μ₀) is a constant value. By plugging in the values of current and radius, the expression for the magnitude of the magnetic field at the center of the arc can be determined.

3. The force per unit length between two parallel wires carrying current can be calculated using the formula: F/L = (μ₀ * I₁ * I₂) / (2 * π * d), where F/L is the force per unit length, μ₀ is the permeability of free space, I₁ and I₂ are the currents in the wires, and d is the distance between the wires.

The force per unit length between two parallel wires carrying current can be calculated using the formula above. The force is directly proportional to the product of the currents in the wires (I₁ and I₂) and inversely proportional to the distance between the wires (d). The permeability of free space (μ₀) is a constant value.

4. The force between two parallel wires depends on the direction of the currents. If the currents are in the same direction, the force is repulsive, and if the currents are in opposite directions, the force is attractive.

The direction of the currents in the two parallel wires determines the direction of the magnetic fields around the wires. When the currents flow in the same direction, the magnetic fields around the wires interact and result in a repulsive force between the wires. When the currents flow in opposite directions, the magnetic fields interact differently and result in an attractive force between the wires.

5. To find the current in the other wire when two parallel wires separated by a distance carry a force per unit length, the formula can be rearranged to solve for the current in the second wire, I₂ = (F/L) * (2 * π * d) / (μ₀ * I₁), where I₂ is the current in the second wire, F/L is the force per unit length, d is the distance between the wires, μ₀ is the permeability of free space, and I₁ is the current in the first wire.

By rearranging the formula for the force per unit length between two parallel wires, the current in the second wire (I₂) can be calculated. The force per unit length (F/L), the distance between the wires (d), and the current in the first wire (I₁) are known quantities, and the permeability of free space (μ₀) is a constant value.

6. If the direction of one current in the two parallel

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Answer:

30 meters

Explanation:

because that's is where the points meet

Answer:

when the time is three seconds it will be 30 m

Explanation: