The diffraction grating has 50 slots per millimeter. At what angle is


the maximum of the first row seen when a wavelength of 400 nm


falls perpendicular to the grid?



Please I really need your help

Answer:

almost, we would need around 12 billion people to do that i believe

Explanation:

Answer:

no

Explanation:

Answer:

Hands down, the strong nuclear force.

Answer:

strong nuclear force, hope it helps!

Explanation:

Actually, gravity is the weakest of the four fundamental forces. Ordered from strongest to weakest, the forces are 1) the strong nuclear force, 2) the electromagnetic force, 3) the weak nuclear force, and 4) gravity.

source: https://wtamu.edu/~cbaird/sq/2013/05/22/why-is-gravity-the-strongest-force/

The amount of heat needed to increase the temperature of 150 kg of material by 10 K is 75,000 J.

To find the amount of heat needed to increase the temperature, you would need to use the specific heat capacity of the material and the amount of material given.

Let's say the specific heat capacity of the material is given as 50 J/(kg * K) and the amount of material is 150 kg.

If you need to increase the temperature by 10 K,

the amount of heat needed can be calculated as:

Amount of heat = mass x specific heat capacity x temperature increase ΔT = 10 K Amount of heat = 150 kg x 50 J/(kg * K) x 10 K= 75,000 J

Therefore, the amount of heat needed to increase the temperature of 150 kg of material by 10 K is 75,000 J.

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A planes average speed between two cities is 610 km/hr. If the trip takes 2. 25 hrs, then the distance covered by a plane is  1372.5 kilometers.

To calculate the distance the plane flies, we can use the formula:

Distance = Speed × Time

Given that the average speed of the plane is 610 km/hr and the trip takes 2.25 hours, we can substitute these values into the formula to find the distance.

Distance = 610 km/hr × 2.25 hrs

To multiply these values, we need to align the units correctly. By canceling out "hrs" in the numerator and denominator, we get:

Distance = 610 km × 2.25

Multiplying 610 km by 2.25 gives us:

Distance = 1372.5 km

Therefore, the plane flies a distance of 1372.5 kilometers.

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Given that a plane's average speed between two cities is 610 km/hr and the trip takes 2.25 hrs. We are to find the distance covered by the plane The plane flies 1372.5 km

Let's find the solution to this problem .The formula for distance, speed and time isd

= s * there,

d = distance covered by the planes

= speed t

= time taken

Substituting the given values, we have610 × 2.25 = 1372.5 km

Hence, the plane flies 1372.5 km.

Given that a plane's average speed between two cities is 610 km/hr and the trip takes 2.25 hrs. We are to find the distance covered by the plane

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The correct answer is option D gravity is an attractive force between any objects in the universe i.e. gravitational force.

Is gravity a force that draws two items together?

A mass attracts a mass; the amount of the gravitational force is directly proportional to the masses of the two items and inversely proportional to the square of the distance between the two objects. Gravitational force is an attractive force that exists between all objects with mass.

We can see that the gravitational force is inversely proportional to the distance between masses and directly proportional to the product of the masses of two objects. As a result, any item in the cosmos can be attracted to another by the force of gravity.

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Answer:

Option C

Explanation:

Answer C is the correct option. water can be written as H₂O, which means that there are 2 Hydrogen atoms for every oxygen atom,  therefore it will occupy more space than oxygen and push more. there is also one more possibility, if the splitting takes place in Hoffman's Voltameter then the Hydrogen will be close to the cathode as hydrogen is positive. Otherwise, option C is correct answer. Hope this Helps you!

Answer:

Nichrome wire is commonly used as a heating element in various applications due to its high resistance to heat and corrosion. Here are two examples of its use as a heating element:

1. Toaster: Nichrome wire is used in the heating elements of a toaster. The wire is coiled around a support structure and when electrical current flows through it, it heats up and toasts the bread.

2. Hair Dryer: Nichrome wire is also used in the heating element of a hair dryer. The wire is coiled around a ceramic core and when electrical current flows through it, it heats up the air flowing over it, which then dries the hair.

Answer:

hair dryer and toaster

Explanation:

nicrome wire uses as heating element because it offers a very large resistance.So,large amount of electric energy converts into heat energy.

Answer:

-12.38 N

Explanation:

This question requires you to first find the acceleration then apply Newton's 2nd law of motion to find the force.

To find deceleration use the formula;

v²= u²+2ad ---where

v= final speed = 0 m/s

u= initial speed = 3.0 m/s

a= acceleration { in this case , deceleration} = ?

d= distance from the point where its passenger rolled off= 4.0 m

therefore ;

\(a=\frac{v^2-u^2}{2d}\)

\(a=\frac{0^2-3^2}{2*4} =\frac{-9}{8} m/s^2\)

Mass of the sled is calculated from its weight force.

Weight force = mg

mass of sled = weight force / g  where g= 10 m/s²

mass of sled = 110/10 = 11kg

The magnitude of horizontal net force will be : F= ma  where ;

m= mass of sled = 11 kg

a= deceleration = -9/8 m/s²

F = 11 * -9/8 = -12.38 N

Force is acting on the opposite direction of the initial motion of the sled.

The magnitude of the horizontal net force acting on the sled is 12.375 N.

Given data:

The initial speed of sled is, u = 3.0 m/s.

The final speed of sled is, v = 0 m/s.

The distance covered before stopping is, s = 4.0 m.

The weight of sled is, W = 110 N.

Using the Newton's second law, the net horizontal force acting on the sled is given as,

F = ma

here,

m is the mass of sled.

a is the acceleration of sled.

Mass is calculated from the weight as,

W = mg

110 = m (10)

m = 11 kg.

Now, using the second kinematic equation of motion to obtain the acceleration of sled as,

\(v^{2}=u^{2}+2(-a)s\\\\0^{2}=3^{2}+2(-a)4\\\\8a=9\\\\a=1.125 \;\rm m/s^{2}\)

Then the magnitude of net horizontal force is,

\(F = ma\\\\F = 11 \times 1.125\\\\F = 12.375\;\rm N\)

Thus, we can conclude that the magnitude of the horizontal net force is 12.375 N.

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Answer:

the change in speed of the sled after 3.0 s is 60 m/s.

Explanation:

Given;

constant acceleration of the sled, a = 20 m/s²

change in time of motion, dt = 3.0 s

The change in speed of the sled after 3.0 s is calculated as;

\(a = \frac{dv}{dt} \\\\dv = a \times dt\\\\dv = 20 \ \times \ 3\\\\dv = 60 \ m/s\)

Therefore, the change in speed of the sled after 3.0 s is 60 m/s.

The speed of the sled change in 3.00 seconds is 60m/s.

Given that,

Based on the above information, the calculation is as follows:

\(= 20 \times 3\)

= 60 m/s

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Answer:

I'M SORRY I CAN'T SEE THE PICTURE BUT IT WILL MOST LIKELY BE THE DIFFERENCE BETWEEN THE NUMBERS

Explanation:

for instance if there was someone pushing a desk with a net force of 9 towards the right, the net force would come to a total of 9 since there is no one on the other side pushing the desk. Meaning the desk would go right. I'm sorry if this isn't what you needed D:

Answer:

The speed of molecules in an "ideal" gas is related to the temperature

Advanced work indicates that

1/2 m v^2 = 3/2 k T    where v^2 here is the mean square speed

This is true for H2, He, O2, Hg   etc. and m is the molecular mass and k the Boltzmann constant

A 3d orbital has two spherical (radial) nodes. The 3d orbital refers to a set of five orbitals within the third energy level of an atom, labeled as 3dxy, 3dxz, 3dyz, 3dx²-y², and 3dz². Each of these orbitals has a different orientation in space.

Spherical nodes, also known as radial nodes, are regions within an orbital where the probability of finding an electron is zero. They are spherical in shape and are characterized by regions of zero electron density along the radial distance from the nucleus. The number of spherical nodes in an orbital is equal to the principal quantum number minus one.

Since the principal quantum number (n) for the 3d orbital is 3, subtracting one gives us two spherical nodes in total. These spherical nodes play a crucial role in determining the shape and characteristics of the 3d orbital.

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Answer:

Movement

Explanation:

a. No, the velocity of the basketball is not constant, b. No, the acceleration of the basketball is not constant, c. The initial velocity of the basketball is zero.

Velocity is the speed of an object in a given direction. It is a vector quantity, meaning it has both a magnitude and a direction. It is usually measured in meters per second (m/s). Velocity can also be expressed in other units, such as kilometers per hour (km/h). Velocity is an important concept in physics, and is used to describe the motion of objects in a variety of situations, such as projectiles and waves. It is also used to calculate force, momentum, and energy. In order to calculate velocity, one needs to know both the object's displacement (change in position) and the time it took for the object to move from its starting point to its final position.

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Answer:

Don't Smoke, Check for mold, Exercise, Hydration, have a healthy diet!

Explanation

If you do these five things then your respiratory system will be in good shape. There are plenty of other things that you can do but these five will suffice for your question. Good luck!

The wave speed on the string is 82.0m/s. The maximum wavelength for a standing wave is 16.8 m. That wave's frequency is 4.88Hz.

(a) V=\(\sqrt{\frac{T}{\mu} } =\sqrt{\frac{96}{\frac{0.12}{8.4} } }\)  = 82 m/sec

(b) for the lowest possible wavelength,

λ/2=l

λ=2l=2×8.4=16.8m

(c) V=fλ=v/λ=82/16.8=4.38Hz

the separation between the corresponding points of two successive waves is known as the wavelength. Two points or particles that are "corresponding points" are those that have finished the same fractions of their periodic motion and are in the same phase. Ordinarily, the wavelength of transverse waves—those with points vibrating perpendicular to the direction of their advance—is calculated from crest to crest or from trough to trough; for longitudinal waves—those with points vibrating parallel to the direction of their advance—the wavelength is calculated from compression to compression or from rarefaction to rarefaction. The Greek letter lambda () is commonly used to represent a wave's length. Wavelength is defined as the product of the speed (v) and frequency (f) of a wave train in a given medium.

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Answer:

4 to 5

Explanation:

There will be no change in the answer.

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The ring accelerates in the direction of the net unbalanced force. Thus option C is the correct answer.

According to Newton's second law of motion, the net force acting on an object is equal to the mass of the object multiplied by its acceleration. If the forces exerted by the two students in the tug-of-war are unbalanced, there will be a net force acting on the steel ring.

The direction of this net force will be in the direction of the stronger force. As a result, the ring will accelerate in the direction of the net unbalanced force. This means that the ring will begin to move, and its velocity will change as long as the net force is applied.

Since the steel ring is accelerating, it can no longer be at rest, and it will not move at a constant velocity. The ring will move in the direction of the stronger force until the forces exerted by the students are balanced again.

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Answer:B

Explanation:

Answer:

The answer is B.

Explanation:

edge2020

The wavelength of red waves ranges from about 620 to 750 nm, and they have the lowest frequency and energy among all visible colors. As the wavelength of visible light waves decreases from red to violet, the frequency of the waves increases, and their energy increases as well.

The longest of all visible light waves are red waves. This conclusion is supported by the fact that red has the longest wavelength and the lowest frequency among all visible colors.

Light waves are a type of electromagnetic radiation that our eyes can detect. The energy of light waves varies, and they differ in wavelength and frequency. The wavelength of a light wave refers to the distance between two consecutive peaks or troughs in a wave, while the frequency refers to the number of waves that pass through a particular point in a second.

The longest of all visible light waves are red waves. The frequency of red waves is the lowest among all visible colors, while its wavelength is the longest. This means that red waves have the lowest energy among all visible colors. Consequently, they are less prone to ionize molecules in biological systems and cause damage to living tissues than other types of electromagnetic radiation. Red waves have a wavelength that ranges from about 620 to 750 nanometers (nm). They are also referred to as long-wave radiation.

As the wavelength of visible light waves decreases from red to violet, the frequency of the waves increases. This leads to an increase in the energy of the waves, which is why violet light has the highest frequency and the shortest wavelength among all visible colors.

Explanation: Thus, the longest of all visible light waves are red waves. The wavelength of red waves ranges from about 620 to 750 nm, and they have the lowest frequency and energy among all visible colors. As the wavelength of visible light waves decreases from red to violet, the frequency of the waves increases, and their energy increases as well.

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By solving the given equation on [² f(u)du = t_ -L₁ €² 2 f(u)du is obtained, we can find t.= J 1+e²t / 1 + e2t / 1-e²tdt. Now, we need to solve the integral,∫ 1+e²t / (1 + e2t)(1-e²t) dt.

For this integral, let u = 1+ e²tSo, du/dt = 2e²And, dt = du/2e²= 1/2e² ∫1+e²t / (u)(1-e²t) du= 1/2e² ∫ (1/u) - (e²/(1-e²t)) du= 1/2e² [ln|u| - ln|1-e²t|] + c.

Now, substituting back the value of u,= 1/2e² [ln|1+ e²t| - ln|1-e²t|] + c= 1/2e² ln|1+ e²t / 1-e²t| + c.

Now, putting the limits in the above expression and solving it, we get the value of t.= [1/2e² ln|1+ e²t / 1-e²t|] t = 1 2t / [1 + e²t] - L₁ 2t / [1-e²t].

Hence, the answer is D) f(t)= 2t / [1 + e²t] - L₁ 2t / [1-e²t].

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By Using Euler's method with two steps, we can find the approximate value of Y(2) is 2.125. , where Y is the solution of the initial value problem dy/dx = x - y, and Y(1) = 3.

Euler's method is defined as a numerical technique which is  used to approximate solutions into ordinary differential equations. The method includes dividing the interval of interest into smaller steps and thereafter approximating the solution at each step by using the derivative of the function.

In this case, we are given the initial value problem dy/dx = x - y, with the initial condition Y(1) = 3. To approximate Y(2) using Euler's method with two steps, we will divide the interval [1, 2] into two equal steps.

Step 1:

We start with the initial condition Y(1) = 3. Using the differential equation dy/dx = x - y, we can approximate the value of Y at the midpoint of the interval [1, 2].

Using the step size h = (2 - 1) / 2 = 0.5, we can calculate Y(1.5) as follows:

Y(1.5) ≈ Y(1) + h × (x - y) = 3 + 0.5 × (1.5 - 3) = 3 + 0.5 × (-1.5) = 2.25

Step 2:

Now, using the value of Y(1.5) as the new approximation, we calculate Y(2) using the same process:

Y(2) ≈ Y(1.5) + h × (x - y) = 2.25 + 0.5 × (2 - 2.25) = 2.25 + 0.5 × (-0.25) = 2.125

Thus,  by using Euler's method with two steps, the approximate value of Y(2) is 2.125.

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The complete question is

Use Euler's Method With Two Steps To Approximate Y(2), Where Y Is The Solution Of The Initial Value Problem: Dy : X − Y, Y(1) = 3

Apply hooke's law

\(\\ \rm\rightarrowtail F=kx\)

\(\\ \rm\rightarrowtail 1176=k(0.0075)\)

\(\\ \rm\rightarrowtail k=156800N/m\)

#b

We need mass again

\(\\ \rm\rightarrowtail F=kx\)

\(\\ \rm\rightarrowtail mg=kx\)

\(\\ \rm\rightarrowtail 9.8m=156800(0.0048)\)

\(\\ \rm\rightarrowtail 9.8m=752.64\)

\(\\ \rm\rightarrowtail m=76.8kg\)

Hydraulic energy can be converted into electricity through the use of hydraulic turbines in hydroelectric power plants. The hydraulic turbines are driven by water pressure or head, which in turn drives the generator, producing electrical energy.

Hydraulic energy is the potential energy that is stored in water and is converted to kinetic energy as water flows through the turbine. The kinetic energy of water is then used to turn the rotor of the generator, which produces electrical energy.

The amount of electrical energy that is produced is proportional to the volume of water flowing through the turbine, the head, and the efficiency of the turbine. In summary, hydraulic energy is converted to electricity using hydraulic turbines in hydroelectric power plants through the use of water pressure or head to turn the generator, producing electrical energy.

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The flea's initial velocity as it jumps is -2.45 m/s, calculated by using kinematic equations considering maximum height, acceleration due to gravity, and time.

To track down the underlying speed (v0) of the bug as it leaves the ground, we can utilize the accompanying kinematic condition:

d = vi * t + 0.5 * a * t^2

Where,

d = 0.500 m (the greatest level the insect comes to)

a = - 9.80 m/s^2 (speed increase because of gravity)

t = the time it takes for the insect to arrive at the greatest level

Since the bug hops straight up and arrives at a greatest level, its last speed by then will be 0 m/s. We can likewise utilize the accompanying condition to track down t:

vf = vi + at

Where,

vf = 0 m/s (last speed at the greatest level)

a = - 9.80 m/s^2 (speed increase because of gravity)

Subbing t from this situation into the primary condition, we can settle for the underlying speed vi:

0.500 = vi * t + 0.5 * (- 9.80) * t^2

vi * t = - 4.9 * t^2

vi = - 4.9 * t

Presently, subbing t and vi into the subsequent condition, we can settle for t:

0 = vi + (- 9.80) * t

0 = - 4.9 * t + (- 9.80) * t

9.80 * t = 4.9 * t

t = 4.9/9.80 = 0.5 s

At last, subbing t into vi = - 4.9 * t, we can track down the underlying speed:

vi = - 4.9 * 0.5 = - 2.45 m/s

Hence, the underlying speed of the insect as it leaves the ground is - 2.45 m/s.

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The complete question is:

In this problem, you will apply kinematic equations to a jumping flea. Take the magnitude of free-fall acceleration to be 9.80 m/s. Ignore air resistance. A flea jumps straight up to a maximum height of 0.500 m . What is its initial velocity v0 as it leaves the ground?

For 30 psi of pressure, we can get approximately 2,1092 \(\frac{kg}{cm^{2} }\)

Psi (Pounds per square inch) is used to measure the pressure of gasses or liquids. To convert psi to \(\frac{kg}{cm^{2} }\) , we used Pascals (Pa) for equalize the units.

1 psi is equal to approximately 6894,76 Pa (Pascals)

1            \(\frac{kg}{cm^{2} }\) is equal to approximately 98,066.50 Pa (Pascals)

Convert 30 psi to Pa (Pascals)

30 psi = 30 x 6894,76 Pa = 206.842,8 Pa

Hence, 30 psi = 206.842,8 Pa

Then, convert 206.842,8 Pa to            \(\frac{kg}{cm^{2} }\)

206.842,8 Pa = 206.842,8 : 98,066.50 = 2,1092 \(\frac{kg}{cm^{2} }\)

So, 206.842,8 Pa = 2,1092 \(\frac{kg}{cm^{2} }\)

And detail converting are becoming

30 psi = 206.842,8 Pa = 2,1092 \(\frac{kg}{cm^{2} }\)

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Answer: a) 36 m/s

B) 64 m

Explanation:

A) d= ½ (Vi+Vf)t

d= ½ (0+12)6

d= 36 m/s

B) 100 – 36 = 64

Answer:

Sediments can be carried from one place to another. The movement of sediments by wind, water, ice, or gravity is called erosion.