The resistance between 2 points in an electrical circuit is 1. 1 Ω. What additional resistance


connected across it will make the resistance exactly 1 Ω?

The talk test can be used to assess :  b. lactate threshold. Talk test is an easy way to measure the relative intensity.

The talk test is one way to measure the relative intensity. If you're doing moderate-intensity activity, then you can talk but not sing during the activity. And if you're doing vigorous-intensity activity, then you will not be able to say more than a few words without pausing for a breath.

Researchers at the University of New Hampshire discovered that the results of the talk test in student volunteers were more closely associated with lactate threshold than with ventilatory threshold.

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Answer : 16 m/s east

Explanation: Trust the process!!

From the frame of reference of runner 1, the velocity of runner 2 will be D) 16 m/s east

The relative velocity is defined as the velocity of an object with respect to another observer

When two bodies are moving in opposite directions , relative velocity get added and if bodies are moving in same direction , relative velocity will get subtracted .

From the frame of reference of runner 1, the velocity of runner 2 will be

v (relative) = v1 + v1

v1 = velocity of runner 1  = 11m/s west

v2 = velocity of runner 2 = 5m/s

v = 11 + 5 = 16 m/s

correct answer will be O D. 16 m/s east as runner 2 is running in east direction

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Refraction results from differences in light's speed. The correct answer is C) speed.

Refraction is the term for the bending of light as it passes through transparent materials (it also occurs with sound, water, and other waves). We are able to create lenses, magnifying glasses, prisms, and rainbows because to this bending caused by refraction.

Refraction occurs when light passes through different mediums and changes its speed. This change in speed causes the light to bend, creating the effect of refraction.

This is why objects appear to be in different positions when viewed through water or a lens. The frequency and incident angles of the light do not affect refraction, only the speed of the light does.

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Answer:

 I₃ = I₀ 0.395

Explanation:

Polarized light passing through a polarizer must comply with Malus's law

         I = I₀ cos² θ

Before starting, let's analyze the angle between the polarizers, the second has the same angle with the first and the third, so it is at the midpoint

         θ₂ = 39/2 = 19.5

now let's analyze the light that passes through each polarizer, as the incident is unpolarized through the first polarizer half the intensity comes out

          I₁ = I₀ / 2

the second polarizer comes out

          I₂ = I₁ cos² 19.5

          I₂ = I₀ / 2 cos² 19.5

through the third polarized the intensity passes

          I₃ = I₂ cos² 19.5

          I₃ = (I₀ /2 cos² 19.5) cos² 19.5

          I₃ = I₀ 0.395

A bee making circular motions about a foot around his hive before he finally lands is showing what a waggle dance looks like.

Bees use the waggle dance to signal to other bees in the hive where food sources are. The bee will fly in a figure-eight pattern, and during its waggle, it will signal the location and proximity of a food source. While the angle of the waggle dance shows the direction of the food supply with respect to the sun, the speed of the waggle dance indicates the distance to the food source.

The bee is considered to stabilize itself and obtain a sense of the hive before landing by making circular motions before it settles. Before landing the bee frequently makes a number of circles and the number of circles is assumed to be correlated with the distance to the food source.

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its should be 2.0 and 4.5 on it

The cooling rate of the object is 0.054.

Let's find the cooling rate (k) of an object using the given information. Ts = 10 °CTo = 110 °CT1 = 35 °Ct2 = 25 minutes. Now, the given formula is T = Ts + (To - Ts) e ^ -kt. Here, we know that the temperature drops from 110°C to 35°C, which is 75°C in 25 minutes. Now, we will substitute the values in the formula as follows:35 = 10 + (110 - 10) e ^ (-k × 25) => (35 - 10) / 100 = e ^ (-k × 25) => 25 / 100 = k × 25 => k = 0.054. Therefore, the cooling rate of the object is 0.054. Hence, option A is correct.

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The wavelength emitted in the transition from level U to level L is 1615 A°, a four-level laser system.

The energy level between the energy levels U 0.820 eV to level L 0.051 eV,

E = E₂ - E₁

  = 0.820 - 0.051

 = 0.769 eV

The difference between energy levels, E is 0.769 eV.

The energy,

E = hc / λ

Energy (E) = 0.769 eV

h (Planck's constant) = 6.626 ×10⁻³⁴

c (speed of the light) = 3×10⁸ m/s

λ (wavelength) =?

λ = hc / E

 = (6.626 ×10⁻³⁴ × 3×10⁸ m/s) / 0.769 eV

 = (6.626 ×10⁻³⁴ × 3×10⁸ m/s) / (0.769×1.6×10⁻¹⁹)

 = (1.9878×10⁻²⁵) / (1.2304×10⁻¹⁹)

 = 1.6155×10⁻⁶

= 1615 ×10⁻¹⁰

= 1615 A°

The wavelength of radiation emitted in the transition from level U to

level L, 1615 A°.

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the volume of this rectangular crystal is 3.354 × 10⁻⁴ m³.

Option b) 3.354 × 10⁻⁴ m³ is the correct answer.

Given the data in the question;

Length of the rectangular box \(=8.6 * 10^{-2} m\)

Width of the rectangular box \(=5.0 * 10^{-2} m\)

Depth of the rectangular box \(=7.8 * 10^{-2} m\)

Now, we know that formula for calculating the volume of a rectangular box or prism is;

Volume = Length × Width × Height or depth

So, we simply input our given values into this formula

\(Volume = ( 8.6 * 10^{-2}) ( 5.0 * 10^{-2}) ( 7.8 * 10^{-2})\)

\(Volume = 0.0003354 m\)

\(Volume = 3.354 * 10^{-4} m^3\)

Therefore, the volume of this rectangular crystal is 3.354 × 10⁻⁴ m³

Option b) 3.354 × 10⁻⁴ m³ is the correct answer.

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Using the Pascal's principle formula, the force exerted on the second piston is 18000 N.

The force on the second piston is determined using the formula from Pascal's principle.

The formula is given below:

\(\frac{f_{1}}{A_{1}} = \frac{f_{2}}{A_{2}}\)

Solving for the force on the second piston, \({f_{2}\)

\({f_{2} = \frac{A_{2}\times f_{1}}{A_{1}}\)

\({f_{2} = \frac {0.2\times3600}{0.04} = 18000 N\)

In conclusion, the force on the second piston is 18000 N.

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a) The mass of the water displaced is 6,700 kg.

b) The weight of the boat is 65,610 N.

2) The magnitude of the force exerted on the piston by the gas is 135 N.



1a) To find the mass of the water displaced, use the formula: mass = density * volume. In this case, mass = 1000 kg/m³ * 6.7 m³, which results in a mass of 6,700 kg.
1b) To find the weight of the boat, use the formula: weight = mass * gravity. Assuming Earth's gravity is 9.81 m/s², weight = 6,700 kg * 9.81 m/s², resulting in a weight of 65,610 N.

2) To calculate the force exerted on the piston by the gas, use the formula: force = pressure * area. In this case, force = 450 Pa * 0.3 m², which results in a force of 135 N.

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Answer: The equation to find the number of doughnuts that Jane had is

3 + 2x = 15.  

Explanation:

Let the number of doughnuts that Jane had be x.

It is given that Jim had three more than twice the doughnuts that Jane had.

Therefore, Jim had (3 + 2x) doughnuts.

According to the given problem, the equation becomes

3 + 2x = 15

The problem can be solved by applying this equation to find the value of x.

To meet the greenhouse gas (GHG) standards in 2016, diesel engines will eventually need to achieve higher thermal efficiency. This means that the engine should be able to convert a higher percentage of fuel energy into useful work output.

Higher thermal efficiency will lead to a reduction in GHG emissions, which is essential for environmental sustainability. Achieving higher thermal efficiency can be done by improving the design of diesel engines, such as increasing compression ratios, optimizing fuel injection systems, and improving combustion efficiency.

Additionally, utilizing advanced materials in engine manufacturing can help reduce weight and improve efficiency. It is important to note that meeting GHG standards is not just a matter of improving diesel engine technology, but also requires a shift towards cleaner energy sources, such as renewable energy, and implementing policies that encourage sustainability. Ultimately, achieving higher thermal efficiency in diesel engines is a critical step towards a cleaner and more sustainable future.

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This is an interesting scenario! When a cube is balanced with one edge in contact with a table top and with its center of gravity directly above the edge, it is said to be in a state of unstable equilibrium. This means that even a slight disturbance could cause the cube to fall over.

To understand this concept, it is important to first understand what center of gravity means. The center of gravity is the point where the weight of an object is evenly distributed in all directions. In a cube, this point is located at the geometric center of the cube.

Now, in the scenario described, the cube is resting on one of its edges. This edge is acting as a pivot point or fulcrum. When the cube is in this position, its center of gravity is located directly above the pivot point. This means that the weight of the cube is evenly distributed on either side of the pivot point.

However, since the cube is in a state of unstable equilibrium, any slight disturbance could cause the weight distribution to shift. For example, if the table were to vibrate or if there were a gust of wind, the weight distribution could shift slightly, causing the cube to fall over.

When a cube is balanced with one edge in contact with a table top and with its center of gravity directly above the edge, it is in a state of unstable equilibrium. This means that even a slight disturbance could cause the cube to fall over.

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The average velocity for the time period from t = 2 to t = 3 is -36 feet/second.

To find the average velocity for the given time period, we need to calculate the change in position (Δy) divided by the change in time (Δt).

Given the height function y = 44t - 16t^2, we can find the average velocity for each time period as follows:

(a) Time period: t = 2 to t = 3

To find the change in position (Δy), we evaluate y at t = 3 and subtract y at t = 2:

Δy = y(3) - y(2) = (44 * 3 - 16 * 3^2) - (44 * 2 - 16 * 2^2)

   = (132 - 144) - (88 - 64)

   = -12 - 24

   = -36 feet

The change in time (Δt) is 3 - 2 = 1 second.

Average velocity = Δy / Δt = -36 feet / 1 second = -36 feet/second

Therefore, the average velocity for the time period from t = 2 to t = 3 is -36 feet/second.

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Answer:

Chupapi munyaño hoyaaaa

It would take 29.8 years for the spacecraft traveling at 0.970c to reach the star, as measured by observers on Earth.

According to special relativity, time dilation occurs as an object approaches the speed of light relative to an observer.

The equation to calculate time dilation is:

\(t' = t / sqrt(1 - v^2/c^2)\)

where t is the time as measured by an observer at rest relative to the object, t' is the time as measured by an observer in relative motion to the object, v is the velocity of the object, and c is the speed of light.

In this case, the distance to the star is 10.2 light-years, which is equivalent to \(9.69 x 10^16\) meters (since one light-year is approximately 9.46 x 10^15 meters).

The velocity of the spacecraft is 0.970c, or 2.91 x 10^8 meters per second.

Using the equation for time dilation, we can calculate the time it would take for the spacecraft to reach the star as measured by observers on Earth:

\(t' = t / sqrt(1 - v^2/c^2)\)

\(t' = 10.2 years / sqrt(1 - (0.970c)^2/c^2)\)

\(t' = 10.2 years / sqrt(1 - 0.9409)\)

\(t' = 10.2 years / 0.3420\)

t' = 29.8 years

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Like contour lines, thick lines are used to define solid objects or boundaries.

Contour lines are typically used in drawing or painting to show the outline or shape of an object, and they can also be used to convey depth or distance. These lines are often referred to as tranches, highs, or horizontal highs. On the map this line connects places that are very high and a ground level on the map.

Thick lines are often used in technical drawings, such as architectural or engineering plans, to show the boundaries of an object or space. This line is used to carry out the creation of outlines, drawing lines and also real lines. Both types of lines are important tools for artists and designers, as they help to create a sense of structure and form in a composition.

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Answer:

The work remains the same

Please mark as brainliest

Answer:

revolution of the planets around the Sun.

Explanation:

The revolution of the planets around the Sun is a result of the gravitational force exerted by the Sun. The Sun's gravitational pull attracts the planets, causing them to move in an elliptical orbit around it. This motion is known as the revolution of the planets around the Sun. The other options listed (rotation of the planets on their axes, rotation of the Moon on its axis, and revolution of the Moon around Earth) are also related to motion and gravity, but they are different phenomena.

In order to find how many centimeters are in 15 kilometers, we can use the following conversion rate:

1 km = 100,000 cm.

So, for 15 kilometers, we have:

Therefore the correct option is C.

Answer:

The transformation went from a gas to a solid which is a Deposition

Explanation:

Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process. The reverse of deposition is sublimation and hence sometimes deposition is called desublimation.

The change of state that occurred was that the object went from gas to solid in a process of Deposition.

The properties of gas and solid:

Based on the properties of the object before and after the change, we can infer that the object went from gas directly to solid. This process is called a deposition.

In conclusion, a deposition occurred with gas changing directly to solid.

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Bronco the skydiver, whose mass is 80 kg experiences 200 N of air resistance and gravity pulls on him with 800 N. The acceleration of his fall  7.5 m/sec².

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

To find the acceleration,

   F = mg

   F = 80.(10)

   F = 800 N

   air resistance = 200 N

   Net force = F - air resistance

                = 800 - 200

                =  600 N

   600 = mass . acceleration

   600 = 80 . acceleration

   acceleration = 7.5 m/sec²

Bronco the skydiver, whose mass is 80 kg experiences 200 N of air resistance and gravity pulls on him with 800 N. The acceleration of his fall  7.5 m/sec².

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A projectile is launched at an angle of 33⁰ above the horizontal, then the projectile launched at an angle of 90 - 33 = 57⁰ will have the same range as the projectile launched at 33⁰. The correct option is (B) 57⁰.

In the absence of air resistance, a projectile launched at an angle of 33 above the horizontal will have the same range as a projectile launched at an angle of 57⁰.

The range of a projectile can be determined by using the range formula.

R = ((v^2 * sin(2θ))/g) Where

R is the range of the projectile,

v is the velocity of the projectile,

θ is the angle at which the projectile is launched, and

g is the acceleration due to gravity.

In the absence of air resistance,

the horizontal component of velocity of a projectile remains constant throughout the flight.

So, the range of a projectile depends only on its initial velocity and the angle at which it is launched.

If a projectile is launched at an angle θ,

the time of flight of the projectile can be calculated by using the following formula:

T = (2v * sin(θ))/g

The maximum height reached by the projectile is given by the formula:

H = (v^2 * sin^2(θ))/2gIf a projectile is launched at an angle θ, then the range of the projectile will be the same as the range of the projectile launched at an angle of (90 - θ).

So, if a projectile is launched at an angle of 33⁰ above the horizontal, then the projectile launched at an angle of 90 - 33 = 57⁰ will have the same range as the projectile launched at 33⁰.

Therefore, the correct option is (B) 57⁰.

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Answer:

No acceleration. All of the forces are acting equally on the paper air plane therfore It isn't going to move any where.

Answer:

c. Chloroplas

Explanation: