An ungraduated mercury thermometer 'Q" attached to millimeter scale reads 22. 8mm in ice and 252. 4mm in steam at standard pressure. What will it read on a day when temperature is 30 F

The average circumference of the two balloons for each amount of sugar are as follows; No sugar: 31.4 cm Some sugar: 34.54 cm More sugar: 40.84 cm

The circumference of a balloon is given by the formula;

C = 2πr

where r is the radius of the balloon. We can find the average circumference of the two balloons for each amount of sugar as shown below. No sugar: The circumference of the balloon with no sugar is given by

C1 = 2πr1

We can find the average circumference of the two balloons as follows;

Average circumference = (C1 + C1)/2 = (2πr1 + 2πr1)/2= 2πr1= 2 × 3.14 × 5= 31.4 cm

(to one decimal place)Some sugar: The circumference of the balloon with some sugar is given by

C2 = 2πr2

We can find the average circumference of the two balloons as follows; Average circumference

= (C1 + C2)/2 = (2πr1 + 2πr2)/2= (2 × 3.14 × 5) + (2 × 3.14 × 6)/2= 2 × 3.14 × 5.5= 34.54 cm

(to two decimal places)More sugar: The circumference of the balloon with more sugar is given by

C3 = 2πr3

We can find the average circumference of the two balloons as follows; Average circumference

= (C2 + C3)/2 = (2πr2 + 2πr3)/2= (2 × 3.14 × 6) + (2 × 3.14 × 7)/2= 2 × 3.14 × 6.5= 40.84 cm (to two decimal places)

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Answer:

The current is halved

Explanation:

The relationship between the current and the resistance is given by Ohm's Law, as follows:

\(V = IR\\I = \frac{V}{R}\)

where,

V = Voltage

I = Current

R = Resistance

Therefore, if we double the resistance:

\(I' = \frac{V}{2R}\\\\I' = \frac{1}{2}I\)

Hence the correct option is:

The current is halved

Answer:

A

Explanation:

To determine the minimum film thickness that will cancel light of wavelength 505 nm when the glass has a refractive index of 1.62 and TiO2 has an index of refraction of 2.62, we will use the formula for constructive interference:

t = (mλ) / (2n), where t is the thickness of the film, m is the order of interference, λ is the wavelength, and n is the refractive index of the coating material.

For the minimum thickness (m = 0.5), we have:

t = (0.5 * 505 nm) / (2 * 2.62) ≈ 48.09 nm


So, the minimum film thickness that will cancel light of wavelength 505 nm is approximately 48.09 nm.

For part (b), we will find the next three thinnest film thicknesses that would also work:

For m = 1.5, t ≈ (1.5 * 505 nm) / (2 * 2.62) ≈ 144.27 nm

For m = 2.5, t ≈ (2.5 * 505 nm) / (2 * 2.62) ≈ 240.46 nm

For m = 3.5, t ≈ (3.5 * 505 nm) / (2 * 2.62) ≈ 336.64 nm

Thus, the three thinnest alternative film thicknesses that would also cancel light of wavelength 505 nm are approximately 144.27 nm, 240.46 nm, and 336.64 nm.

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The equilibrium state of a reversible reaction system can be defined by various numerical constants. One option applicable to any system is the thermodynamic equilibrium constant 'K'.

The values ​​here correspond to equations that include a range of activity values ​​for all phase reactants and products, as well as gas and water species. This equation is constructed so that the magnitude of 'K' indicates which side of the reaction equation is in equilibrium. For K>1, the formula states that the numerator must be greater than the denominator. Therefore, the equilibrium state must favor product formation over reactants.  

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v_a = 178.74 m/s

using Bernoulli's theorem :-

P_a + ½ρ(v_a)² = P_b + ½ρ(v_b)²

Where;

P_a is pressure above wings

P_b is pressure below wings

v_a is speed above wings

v_b is speed below wings

ρ is density of air

We want to find V_a, so let's make V_a the subject;

v_a = √[(2(P_b - P_a)/ρ) + (v_b)²]

Now, we don't know (P_b - P_a)

(P_b - P_a) = Force/Area

(P_b - P_a) = mg/Area

We are given m = 2.5 × 10^(6) kg and area = 1600 m²

Thus, (P_b - P_a) = (2.5 × 10^(6) × 9.81)/1600 = 15328.125 N/m²

Density of air will be taken as 1.2 kg/m³

Thus;

v_a = √[(2(15328.125)/1.2) + (80)²]

v_a = √31946.875

v_a = 178.74 m/s.

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The main consequence of tidal heating on Enceladus because of this elliptical orbit is that it occasionally brings the moon closer to Saturn and occasionally farther away.

When Dione, a bigger moon, orbits Saturn once, Enceladus orbits twice. Enceladus' orbit is made elliptical by Dione's gravity. This causes tidal heating inside the moon, and the following effects also:

But the ultimate cause of the geological activity on this moon had remained a mystery. Instead of a circular orbit, Enceladus orbits Saturn in an elliptical distortion. Saturn's gravity pulls and squeezes the moon as a result, heating its innards and allowing geological activity on the frozen moon.

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Answer:

34.55 m/s

Explanation:

Answer:

17.1

Explanation:

The distance ahead, of the deer when it is sighted by the park ranger, d = 20 m

The initial speed with which the ranger was driving, u = 11.4 m/s

The acceleration rate with which the ranger slows down, a = (-)3.80 m/s² (For a vehicle slowing down, the acceleration is negative)

The distance required for the ranger to come to rest, s = Required

The kinematic equation of motion that can be used to find the distance the ranger's vehicle travels before coming to rest (the distance 's'), is given as follows;

v² = u² + 2·a·s

∴ s = (v² - u²)/(2·a)

Where;

v = The final velocity = 0 m/s (the vehicle comes to rest (stops))

Plugging in the values for 'v', 'u', and 'a', gives;

s = (0² - 11.4²)/(2 × -3.8) = 17.1

The distance the required for the ranger's vehicle to com to rest, s = 17.1 (meters).

todjghozjfh-xjdfg .FExplanation:dthgzdfhsfhfh

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Answer:

The amount of energy required is 4.08 J.

Explanation:

Given,m1 = m2 = 0.55-kgR = 14 cm = 0.14 m The distance between the two basketballs d = 1.1 m

Energy required to change the separation between the centers of the basketballs to 1.1 m is given by the formula; E = K1 + K2 - U where K1 = kinetic energy of ball 1K2 = kinetic energy of ball 2U = potential energy

Let's calculate K1,K2, and U: K1 = 0.5 mv²where m = mass of ball v = velocity of ball Initial velocity of ball = 0 m/s Final velocity of ball v = 0.5 m/sK1 = 0.5 × 0.55 × (0.5)²= 0.069 JK2 = 0.5 mv² Initial velocity of ball = 0 m/s .

Final velocity of ball v = - 0.5 m/sK2 = 0.5 × 0.55 × (- 0.5)²= 0.069 J Let's find out the potential energy; U = (kQ1Q2) / d

where Q1 = Q2 = Q d = distance between the centers of two balls U = (kQ²) / d where k = Coulomb's constant = 8.99 × 10⁹ Nm²/C²Q = charge on a ball = 0 (because it is an uncharged object) U = 0.

Therefore, E = K1 + K2 - U= 0.069 + 0.069 - 0= 0.138 J Therefore, the amount of energy required is 4.08 J.

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the energy efficiency of a coal burning power plant is 33% and incandescent light bulb is only 10% and the electrical transmission lines between the power plant and the house is 70 %.

The definition of energy efficiency is the use of less energy to carry out an activity or achieve a goal. Homes, buildings, and manufacturing facilities that use less energy to manufacture things require less energy to heat, cool, and operate appliances and gadgets.

One of the simplest and most economical methods to slow climate change, lower consumer energy bills, and boost the competitiveness of American businesses is via energy efficiency. In order to achieve net-zero emissions of carbon dioxide through decarbonization, energy efficiency is also a crucial factor.

that the average efficiency of coal-fired power plants around the world today is 33 percent.

an incandescent bulb is only 10% efficient.

the electrical transmission lines between the power plant and the house is 70 %.

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Answer:

they don't, if you get hit in the face then the brackets are gonna rub up against the inside of your mouth then you'll bleed

Explanation:

The expected count of Snoqualmie members living less than 25 miles from the waterfall who rated the cultural importance as high is equal to the product of the total number of members living less than 25 miles from the waterfall and the proportion of members who rated the cultural importance as high.

To calculate the expected count, follow these steps:

1. Determine the total number of Snoqualmie members living less than 25 miles from the waterfall (A).
2. Determine the total number of Snoqualmie members who rated the cultural importance as high (B).
3. Calculate the proportion of members who rated the cultural importance as high by dividing B by the total number of members (C = B/Total Members).
4. Multiply A by C to find the expected count of members living less than 25 miles from the waterfall who rated the cultural importance as high (Expected Count = A * C).

Note: To compare the distributions of ratings, a chi-square test can be used, but the expected counts are required for this analysis.

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Answer:

the answer is a) chunks of ice that begin to vaporized if they pass close to the sun

A. Doctors can safely monitor the physical demands of detox

A. Doctors can safely monitor the physical demands of detoxB. Doctors can provide accountability and emotional support

A. Doctors can safely monitor the physical demands of detoxB. Doctors can provide accountability and emotional supportC. Doctors can prescribe drugs to counteract the effects of alcohol

A. Doctors can safely monitor the physical demands of detoxB. Doctors can provide accountability and emotional supportC. Doctors can prescribe drugs to counteract the effects of alcoholD. Doctors can help shorten the time needed for detox and rehab

Answer:

Solar Energy

Explanation:

Solar radiation (a form of an object) heats up our atmosphere, that's why heat is felt on earth.

Answer:

d.) Newton's first law

Explanation:

This is also called the law of inertia, which means that an object in motion will not stop unless a force is acted upon it, and vice versa. Try this out with a piece of paper and a quarter. Pull the paper from under the quarter slightly quick, and the quarter will stay on the table. Hope i helped you.

The time that is taken by the cart is given as 34.7 s.

Let us have it at the back of our minds that what we are dealing with here is the velocity and that the velocity of the object can be said to be a vector quantity. If it is a vector quantity, we would need to look at the magnitude and the direction of the quantity.

We can now see that the velocity of the object can be defined as the change in the velocity of the object with time. We can now write;

V = Δx/t

V = velocity

Δx = change in the displacement

t = time

Then;

-0.418 = 5.40 - 19.9/t

t = -14.5/-0.418

t = 34.7 s

In the movement of the cart from one point on the plane to the other, the time that has been taken by the cart is about 34.7 s.

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Given what we know, we can confirm that as Halley's comet moves closer to the sun, we can expect its potential energy to be near its maximum.

We can conclude that its potential energy will increase as it comes closer to the sun, and will reach its maximum at the closest point to the sun. This is because the potential energy of an object is directly proportional to the force of gravity acting on that object. As Halley's comet approaches the sun, the sun's gravitational pull on the comet is stronger, and thus, its potential energy increases.

Therefore, given the relationship between gravity and potential energy, we can confirm that s Halley's comet moves closer to the sun, we can expect its potential energy to increase and be near its maximum.

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Answer:

6,400

Explanation:

i made sure  the other person was right and i got the same answer

The photon's wavelength emitted during the transition from n = 2 to n = 3 is approximately 256 nm. The photon's wavelength emitted during the transition from n = 1 to n = 3 is about 160 nm. The width of the box is approximately 0.622 nm.

The energy levels of a particle in a one-dimensional box:

Eₙ = (n² ×h²) / (8 × m × L²)

where:

Eₙ: energy level of the particle

n: quantum number of the energy level

h: Planck's constant

m: mass of the particle

L: width of the box.

Transition from n = 2 to n = 3:

Let's assume the wavelength of the photon emitted during this transition is λ.

ΔE = E₃ - E₂

ΔE = ((3² × h²) / (8 ×m × L²)) - ((2² × h²) / (8 × m × L²))

ΔE = (h² / (8× m × L²)) ×(9 - 4)

ΔE = (h²/ (8 × m × L²)) × 5

The energy difference is proportional to the frequency of the emitted photon:

ΔE = h × c / λ

where c is the speed of light.

We can equate the two expressions for ΔE:

(h² / (8 × m × L²)) × 5 = h × c / λ

λ = (8 × m × L² ×c) / (5 × h)

Plugging in the given values:

m = mass of the electron = 9.11 x 10⁻³¹ kg

L = width of the box (to be determined)

c = speed of light = 3 x 10⁸ m/s

λ = (8 ×(9.11 x 10⁻³¹ kg) × L² × (3 x 10⁸ m/s)) / (5 ×(6.626 x 10⁻³⁴ J·s))

Solving for L

L² = (5 × (6.626 x 10⁻³⁴J·s) × λ) / (8 ×(9.11 x 10⁻³¹kg) × (3 x 10⁸ m/s))

L² = 0.00047765 m²

L ≈ 0.021847 m

The wavelength of the photon is given by:

λ = (8 × (9.11 x 10⁻³¹ kg) × (0.021847 m)² × (3 x 10⁸ m/s)) / (5 × (6.626 x 10⁻³⁴J·s))

λ ≈ 256 nm

Transition from n = 1 to n = 3:

Following the same steps,

ΔE = E₃ - E₁

ΔE = ((3² × h²) / (8 ×m ×L²)) - ((1² × h²) / (8 × m × L²))

ΔE = (h² / (m × L²))

Using ΔE = h × c / λ:

(h² / (m × L²)) = h ×c / λ

Simplifying and solving for λ:

λ = (m × L² × c) / h

Plugging in the given values:

λ = ((9.11 x 10⁻³¹ kg) × (0.021847 m)² × (3 x 10⁸ m/s)) / (6.626 x 10⁻³⁴ J·s)

λ ≈ 160 nm

Width of the box (L):

From the above equations,

L² = (5 × (6.626 x 10⁻³⁴J·s) × (426 nm)) / (8 × (9.11 x 10⁻³¹ kg) × (3 x 10⁸ m/s))

L ≈ 0.000622 m or 160 nm

Therefore, the answers are 256 nm, 160 nm, and 0.622 nm respectively.

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The wavelength of the photon released during the change from n = 2 to n = 3 is roughly 256 nm. About 160 nm is the wavelength of the photon that is released when n = 1 changes to n = 3. The box has a width of about 0.622 nm.

Given values:

m = mass of the electron = 9.11 x 10⁻³¹ kg

L = width of the box (to be determined)

c = speed of light = 3 x 10⁸ m/s

The energy levels of a particle in a one-dimensional box:

Eₙ = (n² ×h²) / (8 × m × L²)

where:

Eₙ: energy level of the particle

n: quantum number of the energy level

h: Planck's constant

m: mass of the particle

L: width of the box.

Transition from n = 2 to n = 3:

The wavelength of the photon emitted during this transition is λ.

ΔE = E₃ - E₂

ΔE = ((3² × h²) / (8 ×m × L²)) - ((2² × h²) / (8 × m × L²))

ΔE = (h²/ (8 × m × L²)) × 5

The frequency of the photon that was released directly correlates with the energy difference:

ΔE = h × c / λ

,c is the speed of light.

Evaluating the two expressions for ΔE:

(h² / (8 × m × L²)) × 5 = h × c / λ

λ = (8 × m × L² ×c) / (5 × h)

λ = (8 ×(9.11 x 10⁻³¹ kg) × L² × (3 x 10⁸ m/s)) / (5 ×(6.626 x 10⁻³⁴ J·s))

Solving for L

L² = (5 × (6.626 x 10⁻³⁴J·s) × λ) / (8 ×(9.11 x 10⁻³¹kg) × (3 x 10⁸ m/s))

L ≈ 0.021847 m

The wavelength of the photon is given by:

λ = (8 × (9.11 x 10⁻³¹ kg) × (0.021847 m)² × (3 x 10⁸ m/s)) / (5 × (6.626 x 10⁻³⁴J·s))

λ ≈ 256 nm

Transition from n = 1 to n = 3:

ΔE = E₃ - E₁

ΔE = ((3² × h²) / (8 ×m ×L²)) - ((1² × h²) / (8 × m × L²))

ΔE = (h² / (m × L²))

Using ΔE = h × c / λ:

(h² / (m × L²)) = h ×c / λ

Solving for λ:

λ = (m × L² × c) / h

λ = ((9.11 x 10⁻³¹ kg) × (0.021847 m)² × (3 x 10⁸ m/s)) / (6.626 x 10⁻³⁴ J·s)

λ ≈ 160 nm

Width of the box (L):

From the above equations,

L² = (5 × (6.626 x 10⁻³⁴J·s) × (426 nm)) / (8 × (9.11 x 10⁻³¹ kg) × (3 x 10⁸ m/s))

L ≈ 0.000622 m or 160 nm

Thus, the answers are 256 nm, 160 nm, and 0.622 nm respectively.

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Answer:

To the left side.

Explanation:

The teddy bear will move towards the left side because more force is applied by scout and sparky than dusty. The reason for this movement of teddy bear  to the left is due to more force is applied by the two dogs present at the left side of the teddy bear while on the other hand, one dog is present at the right side of teddy bear which applied less force so that's why we can say that the teddy bear moves to the left side rather than to the right side.

In the 1st reaction, ⁴²K undergoes beta decay. Therefore the resulting element will have 1 more proton than ⁴²K.

Therefore, the mass number of the new particle is 42.

The atomic number of potassium is 19.

Therefore the atomic number of the new element will be 19+1=20.

Therefore the new element is Calcium.

Therefore the reaction is,

Answer:

Explanation:

Answer:

1:2

Explanation:

There’s only 1 set of zinc chloride and there’s 2 sets of potassium chloride

Answer:

2

Explanation:

To find force it's force = mass times acceleration so to find mass you would divide force by acceleration

False

Virtual image cannot be caught on a screen

We are given the following information about an inelastic collision.

Mass of 1st object = 4 kg

Mass of 2nd object = 10 kg

Initial velocity of 1st object = 25 m/s

Final velocity of both objects = 14 m/s

Initial velocity of 2nd object = ?

In an inelastic collision, the momentum is conserved but the kinetic energy is not conserved.

Recall that the total momentum is conserved and given by

Let us substitute the given values and solve for initial velocity of the body (u2)

Therefore, the initial velocity of the body of mass 10 kg is 9.6 m/s

Explanation:

Given that,

Height of Siberian Huskey = 60 cm

Distance of Siberian Huskey and a plane mirror = 3 m

The characteristic of a plane mirror are as follows :

(a) The height of the formed image = 3 m

(b) The formed image is virtual, upright and same size that of object.