According to Table 35.1, the index of refraction of flint glass is 1.66 and the index of refraction of crown glass is 1.52. (ii) Could a very thin film of some other liquid appear bright by reflected light on both of the glass blocks?(a) It must be less than 1.52. (b) It must be between 1.52 and 1.66. (c) It must be greater than 1.66. (d) None of those statements is necessarily true.

Answer:

Data from a cross-sectional study or survey might need to incorporate weights or design effects in the analysis.The analysis plan should specify which variables are most

Explanation:

Explanation:

For example, scientists on a ship may examine SONAR data collected in real-time to determine the shape of the seafloor (Fig 2.7 A). ... Biologists might graph the number of box jellyfish over time and compare these data to the phases of the moon to look for patterns (Fig 2.7 B).

After transforming the position vectors from polar coordinates to cartesian coordinates, we get -

a) → r = 12.4 m , θ = 170°    ↔     - 12.21 i + 2.15 j

b) → r = 4 cm , θ = 50°   ↔    2.57 i + 3.06 j

c) → r = 20 inches , θ = 210°   ↔    - 17.32 i - 10 j

A position vector is a vector that is used to represent the position of a point in the coordinate system.

Given are the polar coordinates of three points in two dimensional coordinate system.

In order to convert the polar coordinate (r, θ) into cartesian coordinates

(x, y) use the following relations -

x = r × cosθ

y = r × sinθ

a) → r = 12.4 m , θ = 170°

x = 12.4 x cos (170°) = 12.4 x -0.98480775301 = -12 .21

y = 12.4 x sin (170°) = 12.4 x 0.17364817766 = 2.15

In cartesian form → ( -12.21 i + 2.15 j )

b) → r = 4 cm , θ = 50°

x = 4 x cos (50°) = 4 x 0.64278760968 = 2.57

y = 4 x sin (170°) = 4 x 0.76604444311 = 3.06

In cartesian form → ( 2.57 i + 3.06 j )

c) → r = 20 inches , θ = 210°

x = 20 x cos (210°) = 20 x -0.86602540378 = -17.32

y = 20 x sin (210°) = 20 x -0.5= -10

In cartesian form → ( -17.32 i - 10 j )

Therefore, after transforming the position vectors from polar coordinates to cartesian coordinates, we get -

a) → r = 12.4 m , θ = 170°    ↔     - 12.21 i + 2.15 j

b) → r = 4 cm , θ = 50°   ↔    2.57 i + 3.06 j

c) → r = 20 inches , θ = 210°   ↔    - 17.32 i - 10 j

To solve more questions on  coordinates conversion, visit the link below-

https://brainly.com/question/15215968

#SPJ1

Answer:

Average speed = 2.5 mph

Distance = 22.352 meters

Explanation:

Calculate speed, distance or time using the formula d = st, distance equals speed times time.

Calculate speed, distance or time using the formula d = st, distance equals speed times time.

You can use this formula for any question like this

The piece of evidence that suggests that the inner planets were formed from the same rotating cloud of gas and dust is that the planets orbit the sun in the same direction and in the same plane

Smaller planets like Mercury, Venus, Earth, and Mars are considered inner planets. Mercury is thought to be the smallest inner planet, with Earth being the largest. The vastly larger outer planets, such as Jupiter, Saturn, Uranus, and Neptune, are the opposite.

A route that an object or planet in space follows around another body is referred to as an orbit. Moons are satellites that orbit many planets. A man-made satellite is also possible, such as the International Space Station.

Learn more about orbit here

brainly.com/question/18036706

#SPJ4

Answer:

Push or Pull

Gravity

Strong Nuclear Force

Weak Force

Explanation:

Answer:

tidal heating and/or their composition  

Explanation:

Based on the information, as the frequency increases, the wavelength decreases.

As the frequency increases, the wavelength decreases. This is because the frequency of a wave is the number of waves that pass a given point in a given time.

The wavelength is the distance between two consecutive crests or troughs of a wave. So, if the frequency increases, the number of waves that pass a given point in a given time increases, and the distance between the waves decreases.

You can also see this relationship mathematically. The equation for the wavelength of a wave is:

wavelength = speed of wave / frequency

The speed of a wave is constant, so if the frequency increases, the wavelength must decrease.

Learn more about wavelength on

https://brainly.com/question/10728818

#SPJ1

Answer:

imma have to say C I'm not sure tho

The distance from the axis of the force applied is 2.05 m.

The distance from the axis of the force applied is calculated as follows;

The formula for torque;

τ = Fr

where;

Another formula for torque is given as;

τ = Iα

where;

τ = (mr²)α

τ = (25 kg x (0.925 m)²) x (1.84 rad/s²)

τ = 39.36 Nm

The distance is calculated as;

r = τ/F

r = ( 39.36 Nm ) / (19.2 N)

r = 2.05 m

Learn more about torque here: https://brainly.com/question/14839816

#SPJ1

Answer: Heyo Kenji Here! Here's your answer-If the north pole of a magnet is brought near the south pole of another magnet, they will get attracted towards each other.

Explanation: Hope this helps!

Have a nice day!

- Kenji ^^

Answer:

If the north end of a magnet is brought near the south end of another magnet, they will get attracted towards each other. Remeber oppsites attrcat. The same repeal.

Explanation:

Hope This Helps

Have A Great Day

~Zero~

Answer:

Explanation:

because Oxalic acid is present in spinach

Answer:

Waves move through different vmaterials

A:  Waves travel at different speeds through different materials.

Answer:

E = h ν = h c / λ

E = (6.63E-34 J-s * 3.00E8 m/s) / 757.7E-9 m

E = 2.62E-19 J

Note 1 eV = 1.60E-19 J

ν = c / λ = 3.00E8 / 110.9E-9 = 2.71E15 / sec

How much energy (in joules) does a photon of wavelength 757.7 nm have.The energy of the photon with a wavelength of 757.7 nm is 2.61 x 10^-19 J. The energy of a photon is given by the formula: E = hc/λwhere E is the energy, h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon.

Substituting the given values, we get: E = (6.626 x 10^-34 J s)(3.00 x 10^8 m/s)/(757.7 x 10^-9 m)E = 2.61 x 10^-19 JTherefore, the energy of the photon with a wavelength of 757.7 nm is 2.61 x 10^-19 J. What is the frequency (in Hz) of light that has a wavelength of 110.9 nm  The frequency of light with a wavelength of 110.9 nm is 2.70 x 10^15 Hz. The frequency of light is given by the formula:f = c/λwhere f is the frequency, c is the speed of light, and λ is the wavelength of the light.

Substituting the given values, we get:f = (3.00 x 10^8 m/s)/(110.9 x 10^-9 m)f = 2.70 x 10^15 Hz Therefore, the frequency of light with a wavelength of 110.9 nm is 2.70 x 10^15 Hz. How much energy (in joules) does a photon of wavelength 757.7 nm have.The energy of the photon with a wavelength of 757.7 nm is 2.61 x 10^-19 J. The energy of a photon is given by the formula: E = hc/λwhere E is the energy, h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon.

To know more about wavelength visit :

https://brainly.com/question/31143857

#SPJ11

Based on the given sentences, let's sort them into the correct categories: radio waves, visible light waves, or both.

Radio waves:

- They're used to learn about dust and gas clouds.

Visible light waves:

- They have colors.

- They're used to find the temperature of stars.

Both radio waves and visible light waves:

- They can travel in a vacuum.

- They have energy.

- They're invisible.

Sorted table:

| Radio Waves          | Visible Light Waves  | Both                 |

|----------------------|----------------------|----------------------|

| They're used to learn about dust and gas clouds. | They have colors.     | They can travel in a vacuum. |

| -                      | They're used to find the temperature of stars. | They have energy.         |

| -                      | -                       | They're invisible.           |

Learn more in light waves

brainly.com/question/3091095

#SPJ11

Answer:

Power = 21.6 Watts

Explanation:

Power = \(\frac{W}{t}\)

Where W = work and t = time.

W = Fs

Where F is force and s is displacement.

29.6N(5.9m) = 174.64J

W = 174.64J

Power = \(\frac{174.64J}{8.1s}\)

Power = 21.6 Watts

The process that causes water to move from Earth's surface to the atmosphere during the water cycle is called evaporation.

Evaporation is the process by which water molecules absorb energy from the surrounding environment, typically in the form of heat, and transform from a liquid state to a gaseous state (water vapor). The water molecules then rise up into the atmosphere, where they can form clouds and participate in other processes in the water cycle, such as condensation, precipitation, and surface runoff. Evaporation occurs primarily from bodies of water, such as oceans, lakes, and rivers, but also from soil, plants, and other surfaces that contain moisture.

To know more about evaporation, here

brainly.com/question/28319650

#SPJ4

Answer:

the car’s final displacement is 60 m

Explanation:

Given;

initail velocity of the car, u = 0

acceleration of the car, a = 0.8 m/s²

time of motion, t = 10 s

The first displacement of the car:

\(x_1 = ut + \frac{1}{2} at^2\\\\x_1 = 0 + \frac{1}{2} (0.8)(10)^2\\\\x_1 = 40 \ m\)

The second displacement of the car;

acceleration, a = 0.4 m/s²,   time of motion, t = 10 s

\(x_2 = ut + \frac{1}{2} at^2\\\\x_2 = 0 + \frac{1}{2} (0.4)(10)^2\\\\x_2 = 20 \ m\)

The final displacement of the car;

x = x₁  +  x₂

x = 40 m  +  20 m

x = 60 m

Therefore, the car’s final displacement is 60 m

\( \green{\huge{\red{\boxed{\green{\mathfrak{QUESTION}}}}}} \)

ELASTIC LIMIT, YIELD POINT AND ULTIMATE TENSILE STRENGTH.

\( \orange{\underline{\huge{\bold{\textit{\green{\bf{TOPIC}}}}}}} \)

Mechanical Properties Of Solid.

\( \huge\green{\boxed{\huge\mathbb{\red A \pink{N}\purple{S} \blue{W} \orange{ER}}}}\)

\( \bold{ \green{PART \: \: (1):-}} \\ \bold \green {{ ELASTIC \: \: LIMIT}}\)

It is also called yield point

In this limit, energy provided to the material to cause deformation when removed then the material returns to its own shape and size.

In this limit each body shows elastic nature

\( \bold{ \red{PART \: \: (2):-}} \\ \bold \red {{YIELD \: \: STRENGTH}}\)

It is the fix amount of the energy which causes fixed permanent set of deformation.

In this body shows plastic deformation.

The level of stress that corresponds to the yield point is referred to as the yield strength of the material.

\(\bold{ \purple{PART \: \: (3):- \:ULTIMATE }} \\ \bold \purple {{TENSILE \: \: STRENGTH}}\)

It is the amount of the stress which causes permanent set of deformation after the yield point.

Body show perfect plastic deformation.

This shows a permanent set of deformation.

\( \red \star{Thanks \: And \: Brainlist} \blue\star \\ \green\star If \: U \: Liked \: My \: Answer \purple \star\)

The magnitude of the acceleration due to gravity on this planet is 3.470 m/s².

The time period for a simple pendulum performing simple harmonic motion is given by

T = 2π√(l/g)

where T = time period in s,

l = length of the string of simple pendulum, and

g = acceleration due to gravity at the place of the simple pendulum

Given: the length of the pendulum, l = 1.20 m.

the time period of the pendulum, T = 370/100 s= 3.7 s

using the equation of time period, acceleration due to gravity

g = l/(T/2π)² = 1.20/(3.7/2π)² = 3.470 m/s²

Therefore, the magnitude of the acceleration due to gravity on this planet is 3.470 m/s².

To know more about the time period of a simple pendulum, click here:

https://brainly.com/question/2292218

#SPJ4

She is likely to have tip toed as the pressure applied is high.

Pressure is a force per unit area, typically measured in units of Pascal (Pa), atmospheres (atm), or pounds per square inch (psi). It is the result of the force exerted by a gas or liquid against a surface.

We have to note that the pressure that has a value of about  1,500,000 Pa  is quite a large pressure and we can only have such a pressure when we have a small surface area upon which the pressure have been applied.

Learn more about pressure:https://brainly.com/question/12971272

#SPJ1

The acceleration of the cart is 1.962 m/s^2, and the angular velocity of the wheel after 3 seconds is 11.772 rad/s.

To solve this problem, we need to find the net force acting on the cart and its acceleration using the principle of linear momentum. Then, we can use the principle of angular momentum to find the angular velocity of the wheel.

First, we find the center of mass of the cart and its load. Using the formula for the center of mass,

xG = (m1*x1 + m2*x2 + m3*x3 + m4*x4 + m5*x5) / (m1 + m2 + m3 + m4 + m5)

  = (100*0 + 100*1.2 + 100*0.5 + 50*0.3 + 50*0.4) / 300

  = 0.7 m

Next, we can find the net force acting on the cart by analyzing the forces acting on it. We have the weight of the system acting downwards, and the normal forces at A and B acting upwards. Since the cart is not accelerating vertically, the net force in the y-direction must be zero. Therefore, the normal forces at A and B are equal to the weight of the system, which is:

N = 1000 N

To find the net force in the x-direction, we use the principle of linear momentum:

F_net = m*a_G

     = 100*a_G

where a_G is the acceleration of the center of mass. Since the forces acting in the x-direction are the force of friction acting backwards, and the force of tension in the rope acting forwards, we have:

F_net = T - f

where T is the tension in the rope, and f is the force of friction. Since the wheel is rolling without slipping, we have:

f = (1/2)*m*g

where g is the acceleration due to gravity. Also, the tension T is equal to:

T = m*a

where a is the linear acceleration of the wheel.

Using the principle of rotation, we have:

I*alpha = T*r

where I is the moment of inertia of the wheel about its center of mass, alpha is the angular acceleration, and r is the radius of the wheel. Since the wheel starts from rest, its initial angular velocity is zero, and we can use the equation:

omega = alpha*t

to find the angular velocity after time t.

Substituting the given values, we have:

I = m*k^2

 = 100*(0.5)^2

 = 25 kg*m^2

r = 0.5 m

f = (1/2)*m*g

 = (1/2)*100*9.81

 = 490.5 N

T = m*a

F_net = T - f

     = m*a - (1/2)*m*g

F_net = m*a_G

     = 100*a_G

I*alpha = T*r

omega = alpha*t

Substituting T and alpha from the above equations, we get:

m*a*r = m*a - (1/2)*m*g

I*alpha = m*a*r

omega = alpha*t

Solving these equations, we get:

a = 1.962 m/s^2

alpha = a/r = 3.924 rad/s^2

omega = alpha*t = 11.772 rad/s

For more such questions on acceleration:

https://brainly.com/question/30499732

#SPJ11

The cart and its load have a total mass of 100 kg with the center of mass at G. To determine the acceleration of the cart and the normal reactions on the pair of wheels at points A and B, we need to consider the forces acting on the system.

Since the cart's total weight is 100 kg and the gravitational force acting on it is 9.81 m/s², the weight W can be calculated as W = mass × gravity, which is W = 100 kg × 9.81 m/s² = 981 N. This force is acting vertically downwards at the center of mass G. Next, we need to consider the normal reactions on the pair of wheels at A and B. Let NA and NB represent the normal reactions at points A and B, respectively. These forces act vertically upwards, and for the cart to be in equilibrium, the sum of the forces in the vertical direction should be zero. Thus, NA + NB = W = 981 N. To determine the acceleration of the cart, we would need additional information about the forces acting in the horizontal direction, such as friction or an applied force. Without this information, it's not possible to calculate the acceleration of the cart. Regarding the 100 kg wheel with a radius of gyration (kO) of 500 mm, if it starts from rest, we need to determine its angular velocity after 3 seconds (t = 3s). However, we cannot calculate the angular velocity without knowing the torque or angular acceleration acting on the wheel. Additional information is needed to solve this part of the problem.

Learn more about torque here :

https://brainly.com/question/31248352

#SPJ11

The focal-length eyepiece should be used to achieve a total magnification of 200 is -5 cm.

focal length of object f₀ = 4 × 10⁻³ m

focal length of eyepiece fe

length  L= 160 × 10⁻³ m

distance of closest distinct vision ( D=usually 250 mm)

magnification M = 200

fe= (-L / f₀ ) × (D/M)

  =(-160 × 10⁻³ / 4× 10⁻³) × (250 × 10⁻³ /200)

 fe = -0.05m = - 5cm

An eyepiece focal length is the distance from its principal plane to a single point where parallel light rays converge. At the point when being used, the central length of an eyepiece, joined with the central length of the telescope or magnifying instrument objective, to which it is connected, decides the amplification.

An image with a shorter focal length will be smaller, while an image with a longer focal length will be larger. The image is then magnified using the eyepiece, just like a microscope. A bigger picture to begin with will permit the eyepiece to deliver a higher amplification.

Learn more about focal length:

brainly.com/question/31633378

#SPJ4

Explanation:

1.Plastic

Thermal Degradation – Plastic materials subjected to prolonged exposure to high temperatures will lose strength and toughness, becoming more prone to cracking, chipping, and breaking, at a rate in proportion to the temperature and time of exposure.

2.Iron

At room temperature, the iron atoms are in an unusual loosely packed open arrangement; as iron is heated past 912 degrees Celsius, the atoms become more closely packed before loosening again at 1,394 degrees Celsius and ultimately melting at 1,538 degrees Celsius

The formula for converting frequency (f) to approximate wavelength (λ) in meters is given by:

λ ≈ c / f

where:

λ is the wavelength in meters,

c is the speed of light in meters per second (approximately 3 x 10^8 m/s), and

f is the frequency in hertz (Hz).

This formula relates the wavelength of a wave to its frequency and the speed at which the wave propagates. The speed of light in a vacuum is a constant value, so as the frequency increases, the wavelength decreases, and vice versa.

It's important to note that this formula provides an approximation and assumes that the wave is traveling through a vacuum or a medium with a constant refractive index. In different mediums, the speed of light may vary, which would affect the precise relationship between frequency and wavelength.

To know more about frequency please visit:

https://brainly.com/question/29739263

#SPJ11

Answer:

18

Explanation:

12 - 5 + 8 = 15

12 - 8 = 4

7 - 4 = 3

15 + 3 = 18