What is Earth's natural form of visible light and what color is it?

The force on the bullet of mass 21 g  is 14795.12 N.

Force is the product of mass and acceleration.

To calculate the force exerted on the bullet while it is being accelerated, we use the work energy relation below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the force on the bullet is 14795.12 N.

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Answer:

108 N

Explanation:

F = ma

F = (90kg)(1.2m/s^2)

F = 108 N

Answer:

A) 80 N

Explanation:

The closer the particles get, the stronger the Coulomb force, which elongates choices C and D. The Coulomb force is inversely proportional to the distance squared. If the distance is cut in half, the force is multiplied by the reciprocal of (1/2)^2, which is 4. Multiplying it out, 20 times 4 is 80 N.

The Coulomb force if the same particles are separated by a distance of 6 meters is 222.221 N.

Coulomb force is also known as electrostatic force is the force of attraction or repulsion of particles or objects because of their electric charge. It is given by the formula,

\(F = k \dfrac{q_1q_2}{r^2}\)

Where

F = electric force

k = Coulomb constant = 8.9875517923×10⁹ kg⋅m³⋅s⁻²⋅C⁻²

\(q_1, q_2\) = charges

r = distance of separation

We know that the distance between the two particles is 12 meters while the force between the two particles is 20N, therefore, the Coulombs force can be written as,

\(F = k \dfrac{q_1q_2}{r^2}\\\\20 = k \dfrac{q_1q_2}{20^2}\\\\k {q_1q_2} = 20 \times 20^2\\\\k {q_1q_2} = 8000\)

Now, if the distance between the two particles is reduced to 6, the force will be,

\(F = k \dfrac{q_1q_2}{r^2}\\\\F = \dfrac{8000}{6^2}\\\\F = 222.221\rm\ N\)

Hence, the Coulomb force if the same particles are separated by a distance of 6 meters is 222.221 N.

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Therefore, the thermal conductivity of argon (CV,m = 12.5 J·K−1·mol−1, σ = 0.36 nm2) at 298 K is 137.7 mW/(m·K).

The thermal conductivity (λ) of a gas can be estimated by the kinetic theory of gases using the equation:λ = 1/3 × Cv, m × vλ = thermal conductivity Cv,m = heat capacity at constant volume v = average speed of the molecules

The equation to calculate the average speed of the molecules: v = √((8 × R × T) / (π × M))

Where, R is the gas constant, T is the temperature in Kelvin, and M is the molar mass of the gas. Here, we have to calculate the thermal conductivity of argon (CV,m = 12.5 J·K−1·mol−1, σ = 0.36 nm2) at 298 K.

So, let's plug in the values. v = √((8 × R × T) / (π × M))√((8 × 8.314 × 298) / (π × 0.04)) = 330.9 m/sλ = 1/3 × Cv,m × vλ = 1/3 × 12.5 × 330.9λ = 137.7 mW/(m·K)

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Answer:

The nail is driven into the wood so that it would hold into the wood because if the wood was driven to the nail it may not stay and it would take way to much effort.

Explanation:

Answer:

Explanation:

The gravitational force acting on the ball, F = 10 N (down) The air resistance acting on the ball, f = 1 N (up) We need to find the magnitude of net force acting on the ball. The net force is given by : F' = 9 N. So, the net force acting on the ball is 9 N in downward direction. Hence, this is the required solution

The height of the building is approximately 1.26994 x 10^5 meters.

To determine the height of the building, we can use the formula for the period of a simple pendulum:

T = 2π√(L/g),

where T is the period, L is the length of the pendulum, and g is the acceleration due to gravity.

In this case, the period T is the reciprocal of the frequency f:

T = 1/f.

Given that the frequency f is 1/6 Hz, we can calculate the period T:

T = 1/(1/6) = 6 seconds.

Next, we can rearrange the formula for the period to solve for the length L:

L = (T^2 * g) / (4π^2).

We can use the value of the acceleration due to gravity, g ≈ 9.8 m/s².

Substituting the known values:

L = (6^2 * 9.8) / (4π^2) ≈ 5.96 m.

Now, to find the height of the building, we subtract the length of the pendulum from the distance off the ground:

Height of the building = Distance off the ground - Length of the pendulum = 1.27 x 10^5 m - 5.96 m ≈ 1.26994 x 10^5 m.

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Answer:

oxygen, hydrogen, and sulfur. It has a molecular weight of 98.079 g/mol. H2SO4 works as an oxidizing and dehydrating agent.

Explanation:

Oxygen and hydrogen are the water elements made from nature

Answer:

3 elements:

Explanation:

H₂SO₄ is the chemical formula for Sulfuric Acid.

An element’s chemical symbol is a single capital letter or a capital letter followed by a lower case letter.

The subscript number after the element's symbol indicates how many of that atom are in the compound.  

Therefore:

(If there is no number after an element, assume there is one atom of that element).

Note:  If there is a number in front of the compound (the "coefficient"), multiply the subscript for each element by the coefficient.

Therefore, for H₂SO₄ there are:

The electric bill for the household for the month of June is ₹ 504.72

We'll begin by obtaining the energy consumed. This is shown below:

For fridge:

Energy = power × time

Energy for fridge = 400 × 10

Energy for fridge = 4000 Wh

Divide by 1000 to express in KWh

Energy for fridge = 4000 / 1000

Energy for fridge = 4 kWh

For fan:

Energy = power × time

Energy for fan = 80 × 6

Energy for fan = 480 Wh

Divide by 1000 to express in KWh

Energy for fan = 480 / 1000

Energy for fan = 0.48 kWh

Energy for 2 fans = 2 × 0.48 = 0.96 kWh

For tube:

Energy = power × time

Energy for tube = 18 × 6

Energy for tube = 108 Wh

Divide by 1000 to express in KWh

Energy for tube = 108 / 1000

Energy for tube = 0.108 kWh

Energy for 6 tubes = 6 × 0.108 = 0.648 kWh

Total energy consumed per day = 4 + 0.96 + 0.648 = 5.608 kWh

Total energy consumed per month = 30 × 5.608 = 168.24 kWh

Finally, we shall determine the electric bill for the month of june. Details below:

Electric bill = energy × Cost per KWh

Electric bill for June= 168.24 × 3

Electric bill for June = ₹ 504.72

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Answer:

Explanation:

This is visible light.

The colors violet, blue, green, yellow and red having the given range of wavelength, comes at the part of visible light in the spectrum.

Electromagnetic spectrum is the arrangement of electromagnetic radiations in the order of their increasing frequency and decreasing wavelength.

Here,

The colors violet, blue, green, yellow and red are given according to their wavelengths ranging from 400 nm to 650 nm.

The electromagnetic spectrum includes the various radiations, which are arranged accordingly from the longest to shortest wavelength and from the lowest to the highest frequency.

The spectrum includes the range from the radio waves to gamma rays.

In this, the radio waves lies in the frequency range of about 3 x 10¹¹ Hz and wavelength greater than 1 nm and the spectrum extends upto the gamma rays that lies in the frequency range of 10²⁰- 10²⁴ Hz and wavelength less than 10⁻¹²m.

The given data of colors have a wavelength range of 400 nm to 650 nm. Therefore, the given colors can be placed at the part of visible light whose wavelength lies between 400 nm to 750 nm, in the spectrum.

Hence,

The colors violet, blue, green, yellow and red having the given range of wavelength, comes at the part of visible light in the spectrum.

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If a 3.0-cm-tall object is 50 cm in front of a converging lens that has a 25 cm focal length, Part A: The image position is 16.7 cm in front of the lens. Part B:  1.0 cm is he image height and it is inverted.

Part A: The image position can be calculated using the lens formula:

1/f = 1/v - 1/u

where:

f = focal length of the lens

v = image position

u = object position

Given that the object position (u) is 50 cm and the focal length (f) is 25 cm, we can substitute these values into the lens formula:

1/25 = 1/v - 1/50

To solve for v, we can rearrange the equation:

1/v = 1/25 + 1/50

1/v = (2 + 1)/50

1/v = 3/50

v = 50/3 cm

Therefore, the image position is approximately 16.7 cm.

Part B: The magnification (m) of the image can be calculated using the formula:

m = -v/u

Substituting the values, we have:

m = -(50/3) / 50

m = -1/3

The negative sign indicates that the image is inverted. To calculate the image height (h'), we can use the magnification formula:

m = h'/h

where h is the height of the object (3.0 cm).

Rearranging the formula, we have:

h' = m * h

h' = (-1/3) * 3.0

h' = -1.0 cm

Therefore, the image height is 1.0 cm and it is inverted.

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a) The motion of the object between 15 s to 30 s is increasing velocity, to a constant velocity and finally a decreasing velocity.

(b) The average velocity of the object between 0 and 15 seconds is 0.167 m/s.

(c) The position of the object at 5.0 seconds is 0.5 m.

(d) Between 30 and 40 seconds, the velocity of the object is decreasing and the object is decelerating.

(a) The motion of the object between 15 s to 30 s can be described as increasing velocity, to a constant velocity and finally a decreasing velocity.

(b) The average velocity of the object between 0 and 15 seconds is calculated as;

average velocity = total displacement / total time

average velocity = (2.5 m - 0 m ) / ( 15 s - 0 s ) = 0.167 m/s

(c) The position of the object at 5.0 seconds is calculated as follows;

at 5.0 seconds, the position of the object is traced from the graph as 0.5 m.

(d) The motion of the object between 30 and 40 seconds is calculated as;

velocity = ( 0 m - 4 m ) / ( 40 s - 30 s ) = - 0.4 m/s

Between 30 and 40 seconds, the velocity of the object is decreasing and the object is decelerating.

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Answer:

Explanation:

The resultant velocity of the aircraft is 3015 Km/hr while the direction is 5.7 degrees North of east

The resultant  vector is that vector that has the same effect is magnitude and direction as the two vectors acting together. Recall that velocity is a vector quantity. This implies that the magnitude and the direction of the velocity is very important.

The resultant velocity would now be obtained by considering the directions of the two velocities hence we have to work geometrically and not algebraically. We have to know that the plane is flying east at 3000 km/h. If the plane encounters a cross-wind of 300 km/h that is directed to the north

Thus the resultant velocity is;

R = √(3000)^2 + (300)^2

R = √9 * 10^6 + 9 * 10^4

R = 3015 Km/hr

The direction of this resultant velocity is;

Tan-1 (300/3000)

= 5.7 degrees North of east

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Answer:

increasing the masses of the objects and increasing the distance between the objects

When a spacecraft operates outside the Earth's atmosphere without its main sources of fuel, it relies on other propulsion systems that do not require atmospheric oxygen or combustion. One of the most common propulsion systems used in space is rocket propulsion. Rockets operate based on the principle of action and reaction, following Newton's third law of motion. They expel high-velocity exhaust gases in one direction, which generates an equal and opposite force that propels the spacecraft forward.

In space, where there is no air or atmosphere, rockets can use different types of propellants, such as liquid or solid fuels, which can be stored onboard the spacecraft. These fuels undergo a chemical reaction, resulting in the expulsion of hot gases. The expelled gases create a thrust force that propels the spacecraft in the opposite direction.

To control the spacecraft's movement and direction, it uses small thrusters or engines that can be fired in different combinations. By firing these thrusters, the spacecraft can change its trajectory, adjust its orbit, or perform maneuvers in space.

Additionally, spacecraft can harness other sources of energy for various operations. Solar panels are often used to generate electrical power from sunlight. This power is then used for onboard systems, such as communication, navigation, scientific instruments, and life support systems.

In summary, when a spacecraft operates outside the Earth's atmosphere without its main sources of fuel, it relies on rocket propulsion and other systems to maneuver and perform its intended tasks in space.

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Answer:

proof in explanation

Explanation:

First, we will calculate the number of half-lives:

\(n = \frac{t}{t_{1/2}}\)

where,

n = no. of half-lives = ?

t = total time passed = 2100 million years

\(t_{1/2}\) = half-life = 700 million years

Therefore,

\(n = \frac{2100\ million\ years}{700\ million\ years}\\\\n = 3\)

Now, we will calculate the number of uranium nuclei left (\(n_u\)):

\(n_u = \frac{1}{2^{n} }(total\ nuclei)\\\\n_u = \frac{1}{2^{3} }(6400\ million)\\\\n_u = \frac{1}{8}(6400\ million)\\\\n_u = 800\ million\)

and the rest of the uranium nuclei will become thorium nuclei (\(u_{th}\))

\(n_{th} = total\ nuclei - n_u\\n_{th} = 6400\ million-800\ million\\n_{th} = 5600\ million\)

dividing both:

\(\frac{n_{th}}{n_u}=\frac{5600\ million}{800\ million} \\\\n_{th} = 7n_u\)

Hence, it is proven that after 2100 million years there are seven times more thorium nuclei than uranium nuclei in the rock.

A 90 kg individual standing on one foot causes 2.2*103 pounds of pressure to be placed on the ground.

Every object close to Earth is constantly under the influence of weight. The gravity of the Earth pushes everything it touches downward and toward its center.

The newton, a unit of force in the International System of Units (SI), serves as the measuring unit for weight. A kilogram of material, for instance, weighs around 9.8 newtons on the surface of the Earth and about a sixth as much on the Moon.

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Galileo's principle, later incorporated into Newton's laws of motion, can be summarized as: "The natural condition for a moving object is to come to rest" or "The natural condition for a moving object is to remain in motion."

One of Galileo's fundamental contributions to physics was the principle of inertia, which later became an integral part of Newton's laws of motion. The principle states that an object in motion will continue to move at a constant velocity unless acted upon by an external force. This concept challenges the common belief during Galileo's time that objects required a force to keep them in motion. In other words, the natural tendency of a moving object is to maintain its state of motion or rest, which implies that an external force is necessary to alter its motion or bring it to rest. Newton expanded upon this principle by formulating his first law of motion, also known as the law of inertia, which states that an object's acceleration is inversely proportional to its mass. This law affirms that the greater an object's mass, the more force is required to change its state of motion or bring it to rest. Therefore, the principle initially stated by Galileo can be expressed as "The natural condition for a moving object is to come to rest" or "The natural condition for a moving object is to remain in motion."

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Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\ \)

m is the mass

v is the velocity

From the question we have

\(k = \frac{1}{2} \times 9 \times {12}^{2} \\ = \frac{1}{2} \times 9 \times 144 \\ = 9 \times 72 \: \: \: \: \: \: \: \: \: \: \: \)

We have the final answer as

Hope this helps you

Answer:

b. between 2 s and 4 s

Explanation:

2-4 was both 3m/s

Answer:

SORRY I CAN'T DO FOR YOU BECAUSE I DON'T KNOW WHERE IS THE QUESTION

Explanation:

Frequency of Simple pendulum = 0.61 Hz. The pendulum oscillates with a frequency of v = ω/2π, cycles per second, and its period, T, is equal to 2π(l/g).

As a result, the pendulum's frequency determines how frequently it swings back and forth during a certain length of time. How many times the pendulum swings back and forth in 60 seconds, for instance. The length of pendulum will affect its frequency. It implies that the swing rate will be higher and the pendulum shorter.

Number of oscillations that were completed in the given unit of time. f = 1/T = ω/2π 4. Period of time (T) T = 2 π/ω.

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Answer:

Troposphere

High-pressure areas form due to downward motion through the troposphere, the atmospheric layer where weather occurs.

Answer:

1788.402 MJ

Explanation:

Work done = Force (N) x distance (m)

First we have to convert distance into metres:

173.8 x 1000 = 173,800 m

Then plug these values into the equation above:

173,800 x 10290 = 1788402000 J

The reason it's Joules (the unit for energy) is because work done = energy transferred

Now we have to convert Joules into Mega Joules:

1 J = 1/1000000 MJ

1788402000 J = 1788402000/ 1000000 = 1788.402 MJ

Answer:

Gravitational fields are determined only by the mass ( or mass-energy) of a body. ... magnetic fields are produced by charged particles in motion, and depend on the charge and velocity of these particles, but not on their mass. Magnetic fields are 'polar' fields with a North and South polarity.

Explanation:

The power of the lens necessary to correct an eye with a far point of 26.1 cm is approximately 3.83 diopters.

To find the power of the lens necessary to correct an eye with a far point of 26.1 cm, we can use the formula:

Power (P) = 1 / focal length (f)

The far point is the distance at which the eye can see clearly. In this case, it is 26.1 cm or 0.261 meters. To correct the vision, the lens should have a focal length equal to the far point.

Focal length (f) = 0.261 meters

Now, we can calculate the power:

P = 1 / 0.261
P ≈ 3.83 diopters

Therefore, a lens with a power of approximately 3.83 diopters is necessary to correct an eye with a far point of 26.1 cm.

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Answer:

a the number of particles

Explanation:

the volume will decrease because the particles are closer

if the particles are closer they generate more heat and thus can change their state of matter