an electron and a photon each have a wavelength of 0.200 nm. a. find the momentum and energy of the photon. b. find the momentum and kinetic energy of the electron. ignore relativistic effects for the electron. c. how fast is each one moving?

Given equation

\(\\ \sf\longmapsto N_2+3H_2\longrightarrow 2NH_3\)

Nitrogen on product side:-

\(\\ \sf\longmapsto 2(1)=2\)

Hydrogen on reactant side:-

\(\\ \sf\longmapsto 3(2)=6\)

According to the question,

The Equation is

\( \sf \: N_2 + 3H_2 \: \longrightarrow2NH_3\)

Let's balance the equation (Excluded)

\(\sf \longmapsto \: N_2 + 3 H_2 = 2 NH_3\)

Hydrogen atoms on product side:

\(\sf \longmapsto2 \times 1\)

\(\sf \longmapsto \: 2\)

Nitrogen atoms on the reactant side:

\(\sf \longmapsto \: 3 \times 2\)

\(\sf \longmapsto \: 6\)

There fore,

Product side

\( \sf \: 2\)

Reactant side

\( \sf6\)

Answer:

Because the sun's gravity holds it in its orbit

The magnetic flux through the loop is 0.098 Wb.

Magnetic flux (often symbolized Φ), is the measure or amount of magnetic field B passing through a certain cross-sectional area, for example, a coil of wire (this is also often called "magnetic field density"). The unit for magnetic flux in International Units is the weber (Wb) (Weber is a derived unit from the volt-second).

Magnetic Flux Formula:

                                   ∅ = B A cos α

Where:

∅ = magnetic flux (Wb)

B = magnetic field (T)

A = cross-sectional area (m)

α = angle between B and the normal plane

On the given question:

B = 0.50 T

r = 0.25 m

α = 0° ⇒ because it is in a flat plane

A = πr²

Then substitute:

∅ = B A cos α

∅ = 0.50 x π (0.25)² x cos0°

∅ = 0.50 x 3.14 (0.0625) x 1

∅ = 0.098 Wb

So that the magnetic flux bear is 0.098 Wb

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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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Some wave energy can be blanked through the other side in the process

known as Diffraction.

This usually occurs when a wave comes in contact with an obstacle. The

wave will bend itself around the corners of the obstacle so as to enable

its propagation to continue.

The obstructed wave can also pass through an aperture or hole if present

which is one of the important characteristics of waves.

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The apparent frequency heard by the observer on the other train is approximately 417.94 Hz.

Two trains are traveling towards each other at 30.5 m/s relative to the ground. One train is blowing a whistle at 500 Hz. To determine the apparent frequency heard by the observer on the other train, we can use the formula for the Doppler effect.

The formula is:

f' = (v + vr) / (v + vs) * f

Where:
f' is the apparent frequency
v is the speed of sound (343 m/s at standard temperature and pressure)
vr is the velocity of the receiver (observer)
vs is the velocity of the source (whistle)

In this case, since the two trains are moving towards each other, the velocity of the receiver and the source will have opposite signs.

Given:
v = 343 m/s
vr = -30.5 m/s (negative because it is towards the source)
vs = 30.5 m/s

Plugging these values into the formula:

f' = (343 - 30.5) / (343 + 30.5) * 500
f' = 312.5 / 373.5 * 500
f' = 417.94 Hz

So, the apparent frequency heard by the observer on the other train is approximately 417.94 Hz.

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Answer:

(1) body composition, (2) flexibility, (3) muscular strength, (4) muscular endurance, and (5) cardiorespiratory endurance. 

The quantity of heat needed to increase a substance's temperature by one degree Celsius per gramme is known as its specific heat capacity. As a result, the relationship between enthalpy and a substance's specific heat capacity is direct.

Describe enthalpy.

The term "enthalpy" is essentially used in thermodynamics to show the total energy that a substance possesses. Enthalpy mathematically directly correlates with a substance's specific heat capacity.

The Gibbs free energy is reduced by temperature and entropy. Spontaneity is boosted by favourable enthalpy shifts. Spontaneity is increased by positive entropy changes. Positive entropy changes are present in all spontaneous chemical reactions. As a result, the relationship between enthalpy and a substance's specific heat capacity is direct.

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Answer: t=10s

Explanation:

v=u+at

⟹0=30+(−3)×t

⟹0=30−3t

⟹3t=30

⟹t=303

⟹t=10s.

Answer:

Gravitational force formula:

F=Gm1m2/r^2

Now see

F=Newton (N)

m=Kg

r=meter

Explanation:

F=Gm1m2/r^2

N=(G)×kg×kg/m^2

N=(G)×kg^2/m^2

N×m^2/kg^2=G

G= N×m^2/kg^2

G=N.m^2/kg^2

This is the final unit of G:N.m^2/kg^2

Hope you understand!!!!

Answer:

4

Explanation:

Not all plants can grow flowers. Only the ones thay have buds can.

Not all plants produce flowers. Hence, this is the characteristic which is not common in all plants.Therefore, the correct option is 4.

Flowers are the structures of plants. They are responsible for producing seeds that will grow into new plants. Flowers typically consist of a colorful or ornamental part called the corolla, which attracts pollinators such as bees and butterflies, and a reproductive part called the stamen and pistil, which contain the plant's male and female organs.

Not all green plants produce flowers. Flowering plants are a type of plant that belong to the group Angiosperms, but there are also non-flowering plants like ferns and mosses that do not produce flowers. Therefore, the correct option is 4.

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The net force in the horizontal (x) direction is 97.54 N.

The net force in the horizontal (x) direction is calculated by applying the following formula.

Fx (net) = F1 cos (θ₁) + F2 cos(θ₂)

where;

Fx (net) = 49 N cos (27)  +  79 N cos (47)

Fx (net) = 97.54 N

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Answer:

90 A

Explanation:

Applying,

P = VI.............. Equation 1

Where P = Power, V = Supply voltage, I = current.

Make I the subject of the equation

I = P/V.............. Equation 2

From the question,

Assuming the Voltage of the main electric supply is 120 V

Given: P = 10.8 kW = 10800 W, V = 120 V (household voltage)

Substitute these values into equation 2

I = 10800/120

I = 90 A

Answer:

Explanation:

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Answer:

it's b I guess not sure

Explanation:

The reading of the balance for a body with mass 3kg and volume 4 × 10⁻⁴ in air and when fully immersed in water are 29.4N and 25.5N, respectively.

The weight of an object is the force which is acting on the object due to the influence of gravity. Weight is a vector quantity because it has both the magnitude and direction. The gravitational force acts on the object.

The reading of the balance when the body is in air, W = mg = (3) × (9.8) = 29.4 N

The reading of the balance when the body is fully immersed in water is:

F = mg − ρgV = (3) × (9.8) − (1000) × (9.8) × (0.0004) = 25.5 N

Therefore, the reading of the balance in the given conditions are 29.4N and 25.5N.

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Yes, for one-dimensional, steady-state conduction in a cylindrical or spherical shell without heat generation, the radial heat flux is independent of radius.

For one-dimensional, steady-state conduction in a cylindrical or spherical shell without heat generation, is the radial heat flux independent of radius. Yes, for one-dimensional, consistent state conduction in a round and hollow or circular shell without heat age, the outspread intensity transition is free of range. The spiral intensity rate, which is the result of the intensity motion and the cross-sectional region, is additionally free of span. This is on the grounds that, in consistent state conditions, the intensity stream is corresponding to the temperature slope, and the temperature angle is steady all through the shell because of the balance of the issue. so yes the radial heat rate independent of radius.

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Since acceleration is uniform, if the velocity at point B is v, then

\(v^2 - \left(20\dfrac{\rm m}{\rm s}\right)^2 = 2\left(3\dfrac{\rm m}{\mathrm s^2}\right)(120\,\mathrm m)\)

Solve for v :

\(v^2 = \left(20\dfrac{\rm m}{\rm s}\right)^2 + 2\left(3\dfrac{\rm m}{\mathrm s^2}\right)(120\,\mathrm m) \\\\ v = \sqrt{\left(20\dfrac{\rm m}{\rm s}\right)^2 + 2\left(3\dfrac{\rm m}{\mathrm s^2}\right)(120\,\mathrm m)} \\\\ \boxed{v \approx 34 \dfrac{\rm m}{\rm s}}\)

Answer:

You can use a block and an inclined plane (just a tilted board)

Place the block on the plane and gradually increase the angle the plane makes with the horizontal.

Static friction will keep the block in place (no sliding) until the angle between the plane and the horizontal is large enough. The block will now slide but is still under the influence of kinetic friction. Thus static friction is greater than sliding friction.

The best type of system to observe conservation of matter, where all the mass stays in one place, is a closed system. In a closed system, no matter (mass) can enter or leave the system, ensuring that all the mass remains within the boundaries of the system.

In a closed system, such as a sealed container, any physical or chemical processes that occur inside the system will not result in a net loss or gain of mass. This allows for accurate observation and verification of the conservation of matter principle, which states that matter cannot be created or destroyed, only transformed or rearranged.

By maintaining a closed system, scientists can study and measure the mass before and after various reactions or processes, providing evidence for the conservation of matter in a controlled environment.

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Answer:

electrical energy so that there would be a flow of light

Answer:

it's because the eclipse hides the moon and Venus and the sun

Explanation:

I found it

Answer:

i don't understand the hw

The frequency of oscillation is multiplied by the square root of the product of the factors of inductance and capacitance. In this case, the frequency is multiplied by the square root of 9.72 multiplied by 6.12, which is equal to 11.3.

Suppose that the current in an LC circuit oscillates with a certain frequency. If the inductance is increased by a factor of 9.72 and the capacitance is increased by a factor of 6.12, the factor by which the frequency of oscillation is multiplied is calculated as follows:

Let L be the initial inductance and C be the initial capacitance of the LC circuit. The angular frequency of oscillation of the LC circuit is given by the expression \(\omega= 1/\sqrt{LC}\) where ω is the angular frequency, L is the inductance, and C is the capacitance.

The new angular frequency of the LC circuit is ω′ = 1/√(L′C′)where L′ and C′ are the new inductance and capacitance, respectively. Let L′ = 9.72L and C′ = 6.12C. Substituting these values into the equation above gives ω′ = 1/√(9.72LC × 6.12C)ω′ = 1/√(59.4384LC)ω′ = (1/√59.4384) × (1/√(LC))ω′ = (0.161)ω.

Therefore, the factor by which the frequency of oscillation is multiplied is 0.161. Therefore, the frequency of oscillation is decreased by a factor of 6.192.

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From the calculations and the data provided, the speed is obtained as 15 m/s

The term momentum refers to the product of mass and velocity. Given that we can now proceed with the answer.

Since;

p = mv

m = 750kg

v = 5 km/hr or 1.4 m/s

p = 750kg *  1.4 m/s

p = 1050 kgm/s

If the mass of the body is 70kg, the speed is

v = p/m

v = 1050 kgm/s/70 Kg

= 15 m/s

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Answer:

False. Temperature is independent of volume

Answer: the answer False sorry if its wrong

Explanation: have a nice day\night buddy

Answer:

Inertia is the resistance of any physical object to any change in its velocity. This includes changes to the object's speed, or direction of motion. An aspect of this property is the tendency of objects to keep moving in a straight line at a constant speed, when no forces act upon them.

Explanation:

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Answer:- how difficult it is to change an object's motion

Explanation:

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The specific gravity of the mixture is 0.867.

To find the specific gravity of the mixture, we need to calculate the ratio of the density of the mixture to the density of water.

The specific gravity is defined as the ratio of the density of a substance to the density of water. In this case, we can find the specific gravity of the mixture by calculating the ratio of the density of the mixture to the density of water.

The density of the mixture can be calculated by adding the densities of the antifreeze solution and water in the given proportions.

Let's start by calculating the density of the antifreeze solution. The specific gravity is given as 0.80, which means that the density of the antifreeze solution is 0.80 times the density of water.

Density of antifreeze solution = 0.80 * Density of water

Next, we can calculate the density of the mixture by adding the densities of the antifreeze solution and water in the given proportions.

Density of mixture = (Volume of antifreeze solution * Density of antifreeze solution + Volume of water * Density of water) / Total volume of mixture

Volume of antifreeze solution = 5.0 L

Volume of water = 2.5 L

Total volume of mixture = 7.5 L

Now, let's substitute the values into the equation:

Density of mixture = (5.0 L * Density of antifreeze solution + 2.5 L * Density of water) / 7.5 L

Since we already know that the density of the antifreeze solution is 0.80 times the density of water, we can substitute this value into the equation:

Density of mixture = (5.0 L * 0.80 * Density of water + 2.5 L * Density of water) / 7.5 L

Now, let's simplify the equation:

Density of mixture = (4.0 * Density of water + 2.5 * Density of water) / 7.5

Density of mixture = (6.5 * Density of water) / 7.5

Finally, we can find the specific gravity of the mixture by calculating the ratio of the density of the mixture to the density of water:

Specific gravity of mixture = Density of mixture / Density of water

Substituting the equation for density of mixture:

Specific gravity of mixture = ((6.5 * Density of water) / 7.5) / Density of water

Simplifying the equation:

Specific gravity of mixture = 6.5 / 7.5

Specific gravity of mixture = 0.867 (rounded to three decimal places)

The specific gravity of the mixture is 0.867.

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Explanation:

\(workdone = force \times distance \\ = 500 \times 100 \\ = 50000 \: J\)

The manager must be smart and able to take important decisions quickly.

A manager is an employee why has been saddled with the responsibility of overseeing the activities of other staff as well as the responsibility of taking certain important decisions for the overall good of the organization.

This means that the manager must be smart and able to take important decisions quickly. This will be important in the discharge of his duties because it will determine how the company will fare under his supervision.

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Explanation:

If your AC is leaking inside the home, it's most likely due to a clogged condensate drain line. Over time, this line can become clogged with debris like dirt, dust, or mold. When your condensate drain line gets clogged, water can't escape and drain to the outside of the home.

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