Can someone help me please, thanks.

In the image modeling refraction, the actual penny is located in the water below the interface between the water and air.

When the light rays from the penny pass through the water-air interface, they bend away from the normal due to the decrease in refractive index from water to air. This causes the rays to diverge, making the rays appear to come from a virtual image that is located above the actual penny.

The person sees the virtual image of the penny above the interface between water and air, where the diverging rays of light appear to converge. Therefore, the actual penny is located below the virtual image that the person sees.

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Isaac Newton used a prism to disperse a beam of sunlight into the colors of the rainbow; he then used a second prism to recombine the colors back into white light.

In 1666, Isaac Newton conducted a series of experiments with light using a prism. He found that a beam of sunlight could be separated into its component colors by passing through a prism, a process known as dispersion.

The colors of the rainbow, in order from longest to shortest wavelength, are red, orange, yellow, green, blue, indigo, and violet. Newton named this sequence of colors the spectrum.

Newton also discovered that the colors could be recombined into white light by passing the spectrum through a second prism, a process known as recombination. This experiment demonstrated that white light is actually composed of all the colors in the visible spectrum.

Newton's experiments with light and prisms laid the foundation for the field of optics and contributed to the development of modern theories of light and color. His work showed that white light is not a fundamental entity but is instead composed of different wavelengths of light that can be separated and recombined.

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Answer:

T= 2.66 seconds

Explanation:

Convert 80 km to m, which would be 0.08 m

\(t = d \div s\)

\(t = 0.08 km\div 108kmph\)

\(t = 0.00074074074 \: h\)

\(1 \: hour = 3600 \: sec\)

\( \frac{1}{3600} \times \frac{0.00074}{x} \)

\(0.00074074074h \times 3600s = 2.66s\)

Answer:

C) The right not to be put in double jeopardy.

Explanation:

There was other sources that stated that too, I just chose the image below to make you more confident with ""C" being the right answer.

Answer:1.81

(a) Explanation:the turn ratio= input voltage÷output voltage.

400÷220=1.81.

Don't know how to solve b part...

Answer:

The answer to your problem is, \(3.125 * 10^{19}\) in electrons per second

Explanation:

5A current is passing through the copper wire and the light bulb; it means that 5 Coulombs of charge per second is passing through the wire (as current = coulombs/second). To find the electrons per second, the following formula is used:

Electrons per second =

\(N_{e} = \frac{5}{e} = \frac{5}{1.60-10^{-19} }\)

\(= 3.125 * 10^{19}\)

Thus the answer to your problem is, \(3.125 * 10^{19}\)

Answer:

Its also know as atomic mass its the mass of isotopes.

Explanation:

relative atomic masses of sources in the local environment of the Earth's crust and atmosphere as determined by the atomic weight.

Answer:

Density = 2.66 g/cm³

Explanation:

Density = Mass / Volume

Since, the units are same as of kg/m³

==> Density = 400 / 150

==> Density = 2.66

Density = 2.66 g/cm³

\(\\ \sf\longmapsto Density=\dfrac{Mass}{Volume}\)

\(\\ \sf\longmapsto Density=\dfrac{400}{150}\)

\(\\ \sf\longmapsto Density=2.6g/cm^3\)

Explanation:

here's the answer to your question

Answer:

Hope this helps

Explanation:

All night the sky bellows,

But one of a kind sleeps tight,

Comfy and Cozy,

Delighted with the presence of the howling wind

Answer:

Answer:

3.11×10¯¹¹ N

Explanation:

From the question given above, the following data were obtained:

Charge 1 (q₁) = 6×10¯¹⁰ C

Charge 2 (q₂) = 2.3×10¯¹⁵ C

Distance apart (d) = 2 cm

Force (F) =?

Next, we shall convert 2 cm to metre (m). This can be obtained as follow:

100 cm = 1 m

Therefore,

2 cm = 2 cm × 1 m / 100 cm

2 cm = 0.02 m

Thus, 2 cm is equivalent to 0.02 m

Finally, we shall determine the electrical force between the two charge as follow:

Charge 1 (q₁) = 6×10¯¹⁰ C

Charge 2 (q₂) = 2.3×10¯¹⁵ C

Distance apart (d) = 0.02 m

Coulomb constant (K) = 9×10⁹ Nm²C¯²

Force (F) =?

F = Kq₁q₂ / d²

F = 9×10⁹ × 6×10¯¹⁰ × 2.3×10¯¹⁵ / 0.02²

F = 1.242×10¯¹⁴ / 0.0004

F = 3.11×10¯¹¹ N

Therefore, the electrical force between the two charge is 3.11×10¯¹¹ N

Answer: A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. 

Hope that helps! :)

Answer:

... If your arrows are too lightly or heavily spined for your bow, the “archer's paradox” resulting in poor arrow flight and loss of accuracy.

Answer:

Gases move from high-pressure areas to low-pressure areas. And the bigger the difference between the pressures, the faster the air will move from the high to the low pressure. That rush of air is the wind we experience.

Explanation:

Answer: Re-Horakhty

Explanation:

He has a human body and a falcon head, he has a crown in form of a disk with a cobra on his head. Ra-Horakhty was thought of as the god of the rising sun.

The acceleration of gravity will be one-third of its surface value at approximately 4.65x10^6 meters above Earth's surface.

To determine the distance above the Earth's surface where gravity is one-third of its surface value, we can use the formula for gravitational acceleration: g' = GM/R^2, where g' is the reduced acceleration, G is the gravitational constant, M is Earth's mass, and R is the distance from the center of Earth. At the surface, g = GM/r^2, where r is Earth's radius (6.38x10^6 m). We want to find the distance (h) above the surface when g' = g/3.

First, we set up the equation: g/3 = GM/(r+h)^2. Next, we substitute g = GM/r^2, yielding: GM/r^2 * 1/3 = GM/(r+h)^2. Simplify and cancel terms: 1/3 = (r^2)/((r+h)^2). Solve for h: 3r^2 = (r+h)^2, 3 = (1+h/r)^2.

Taking the square root, we get: sqrt(3) = 1+h/r. Rearrange to solve for h: h = r(sqrt(3)-1). Plugging in the Earth's radius, we find: h ≈ 6.38x10^6 * (1.73-1) ≈ 4.65x10^6 m.

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Answer:

C. Continental glaciers are much larger and thicker.

Explanation:

One main difference between continental glaciers and valley glaciers is their size and thickness. Continental glaciers are vast ice sheets that cover large areas of land and can be several kilometers thick, while valley glaciers are smaller and form in mountain valleys and can be a few hundred meters thick. This difference in size and thickness also affects the way they move and erode the landscape. Continental glaciers tend to flow slowly in all directions, while valley glaciers move faster down a steep slope and cause more erosion in the valleys they occupy.

The average temperature of the bar would be (15+30)/2 = 22.5 degrees C. To calculate the average temperature, temperature readings are taken at regular intervals, such as hourly or daily, and then the sum of all the readings is divided by the total number of readings taken.

The average temperature of the bar can be found by taking the average of the temperatures at the two ends.  
The temperature of a 10 m long metal bar increases linearly from 15 degrees C at the cooler end to 30 degrees C at the hotter end. To find the average temperature, simply calculate the midpoint between the two temperatures.

Average temperature = (15 + 30) / 2 = 45 / 2 = 22.5 degrees C
The average temperature of the bar is 22.5 degrees C.

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The concentration of nitrogen will be 29.12 kg/m³.

The thickness of the steel sheet, l = 5.0 mm

The diffusion coefficient of nitrogen in steel, D = 46.70 m²/s

The diffusion flux, J = 53.81 kg/m²s

The initial concentration of nitrogen in steel, C1 = 39.52 kg/m³

The final concentration of nitrogen in steel, C2 = 29.12 kg/m³

The required distance, x = ?

The concentration profile is linear. The formula for diffusion flux is J = -D * (dC/dx), where dC/dx is the concentration gradient in the x direction. Here, the negative sign represents the diffusion of nitrogen in the direction of decreasing concentration.

Since the concentration profile is linear, we can use the following equation: dC/dx = (C2 - C1) / x

We can now substitute the given values in the diffusion flux formula:

J = -D * (dC/dx) = -D * (C2 - C1) / x

Solving the above formula for x, we get

x = -D * l / (J * (C2 - C1)) = -46.70 * 5.0 / (53.81 * (29.12 - 39.52))

≈ 1.53 mm

Therefore, the concentration of nitrogen will be 29.12 kg/m³ at a distance of approximately 1.53 mm from the high-pressure surface.

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The potential energy stored in the cylindrical capacitor when a potential difference of 8 V is applied between the inner and outer cylinders is approximately 5.0912 × 10^(-10) J

To find the potential energy stored in the cylindrical capacitor, we first need to calculate the capacitance. For a cylindrical capacitor, capacitance (C) is given by the formula:

C = (2 * π * ε₀ * L) / ln(b/a),

where ε₀ is the vacuum permittivity (approximately 8.854 × 10^(-12) F/m), L is the common length of the cylinders, a is the radius of the inner cylinder, and b is the radius of the outer cylinder.

Plugging in the values given in the problem, we get:

C = (2 * π * 8.854 × 10^(-12) F/m * 0.16 m) / ln(0.014 m / 0.008 m).

Now, calculate the capacitance:

C =1.591 × 10^(-11) F.

Next, we will find the potential energy (U) stored in the capacitor using the formula:

U = 0.5 * C * V^2,

where V is the potential difference applied between the inner and outer cylinders.

Plugging in the values, we get:

U = 0.5 * 1.591 × 10^(-11) F * (8 V)^2.

Finally, calculate the potential energy stored:

U =5.0912 × 10^-10 J.

So, the potential energy stored in the cylindrical capacitor when a potential difference of 8 V is applied between the inner and outer cylinders is approximately 5.0912 × 10^(-10) J.

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Answer:

The North Pole.

Explanation:

According to the Lenz's law of electromagnetic induction, an induced elemagnetic force tends to give rise to the current. In reaction, this current's magnetic field try to oppose any replacement in the magnetic flux.

So,  as per the law of Lenz's electromagnetic induction, when the current passes in a coil in anti-clockwise direction, this will produce the opposite end of the coil in the north pole.

So, the correct answer is north pole.

Answer:

Mass of Vehicle = 600 kg

Force = F = 7000 N

Drag force = f = 500 N

Let Fnet is net force on Vehicle then

Fnet = F - f

Fnet = 7000 - 500

Fnet = 6500 N

Let a is acceleration of Vehicle then by Newton's law

Fnet = Ma

a = Fnet / M

a = 6500/ 600

a = 10.83 m/s2

This is acceleration of Vehicle

Explanation:

Answer:

in a plane flying above Earth

Explanation:

Gravity is the force that draws  objects toward center of the earth. If you throw an object up on the earth's surface, you will notice that it will fall back to the ground due to the earth's gravitational pull on the object.

However, the further one goes from the earth's surface, the lesser the gravitational pull. Therefore the cat will experience less gravitational pull in an airplane flying at a higher altitude.

Given:

Thermal energy is denoted by W

Chemical energy is denoted by X

Electrical energy is denoted by Y

Kinetic energy is denoted by Z

To find the order of energy while converting bagasse to electricity.

Explanation:

The bagasse has chemical energy stored in it.

The bagasse is burned, so chemical energy gets converted into thermal energy.

The thermal energy gets converted into kinetic energy.

The kinetic results in the motion of electrons.

Thus, producing electrical energy.

Hence, the conversion order is XWZY

Answer: decrease in current, power loss, and voltage drop