Visible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed on a screen that is 2.40 m from the grating. Part A In the first-order spectrum, maxima for two different wavelengths are separated on the screen by 2.92 mm . What is the difference between these wavelengths? Express your answer in meters.

Answer:

Magnitude of the momentum (P) = 5.96 Kg.m /s (Approx)

Explanation:

Given:

Mass of baseball (m) = 155 gram = 0.155 kg

Velocity (v) = 86 miles/ hour

Find:

Magnitude of the momentum (P)

Computation:

1 mile = 1,609.344 meters

So,

Velocity (v) = 86 × (1,609.344 / 3600)

Velocity (v) = 38.45 m/s

Magnitude of the momentum (P) = mv

Magnitude of the momentum (P) = (0.155)(38.45)

Magnitude of the momentum (P) = 5.96 Kg.m /s (Approx)

Answer:

we have to find out the work done in order to find the power since power is the amount of joules spent every second

work done by the bull = Force * Displacement

work done = 200 N * 10 m

work done = 2000 Nm or  2000 j

since we know that the bull spent the 2000 j in 10 seconds,

we will find the amount of energy spent in a second:

power = work done / time

power = 2000 / 10

power = 200 W

a brainly will be appreciated

Answer:

200W

Explanation:

as power = work/time

               = force * distance /time

               = 200 * 10/ 10

               ==200W

Answer:

Here are some of the main cons of nuclear energy.

•Expensive to Build. Despite being relatively inexpensive to operate, nuclear power plants are incredibly expensive to build—and the cost keeps rising. ...

•Accidents. ...

•Produces Radioactive Waste. ...

•Impact on the Environment. ...

•Security Threat. ...

•Limited Fuel Supply.

[tex]\huge\underline\mathcal\pink{Answer:-}[/tex]

The nuclei of atoms contain a large amount of energy. Releasing this energy would free the world from having to use fossil fuels. There are two methods of doing this: fission and fusion.

1. Nuclear is a bad match for renewables.

2. Building nuclear power stations is very expensive.

3.There are huge costs beyond simply constructing the power stations.

4 Nuclear power stations take at least a decade to build.

[tex]\huge\red{kya \: aap \: samajhe?}[/tex]

Answer:

mass of oxygen that has been withdrawn from the tank = 4.77 kg

Explanation:

We are given;

Initial mass of oxygen gas;m1 = 11 kg

Initial gauge pressure;p'1 = 35 atm

Final gauge pressue;p'2 = 19.4 atm

Now, for thia question we cannot use gauge pressure but absolute pressures.

Thus, formula for absolute pressure = gauge pressure + external atmospheric pressure.

External atmospheric pressure = 1 atm.

Thus;

P1 = 35 + 1 = 36 atm

P2 = 19.4 + 1 = 20.4 atm

Now, formula for ideal gas equation is;

PV = nRT = (m/M)RT

Where;

m is mass of gas

M is molar mass of gas

R is gas constant

T is temperature

Thus, for state 1,we have;

P1 × V1 = (m1/M)RT1 - - - (eq 1)

For state 2,we have;

P2 × V2 = (m2/M)RT2 - - - - - (eq 2)

Divide equation 1 by equation 2 to give;

(P1 × V1)/(P2 × V2) = (m1 × T1)/(m2 × T2)

The gas remains confined in the tank, thus, V1 = V2

Also, the temperature is constant, thus T1 = T2.

Thus, V1 & V2 and also T1 & T2 will cancel out to give;

P1/P2 = m1/m2

Since we are looking for the mass of oxygen( Δm) that has been with withdrawn from the tank, we have to rewrite the equation to accommodate Δm. Now, Δm is simply m1 - m2

Thus,

From P1/P2 = m1/m2, we have;

P1/P2 = m1/(-(m1 - m2) + m1)

This gives;

P1/P2 = m1/(m1 - Δm)

Cross multiply to get;

(m1 - Δm)(P1/P2) = m1

Cross multiply to get;

m1 - Δm = (P2/P1)m1

Δm = m1 - (P2/P1)m1

Δm = m1(1 - (P2/P1))

Plugging in the relevant values to get;

Δm = 11(1 - (20.4/36))

Δm = 4.77 kg

Answer:

Concave mirror

The kindling should be positioned at the focus point of the mirror

Explanation:

A concave mirror should be used, because it forms a real image, and focuses the image of an incident ray coming from a distant source on a single point. These mirrors are called "converging mirrors" because they tend to collect light that falls on them, refocusing parallel incoming rays toward a focus, and are sometimes used to collect light from a large area and focus it into a small spot, as in concentrated solar power.

Answer:

Hey !.

I think the answer will be water vapour,ice ,water.

Answer:

water vapor, water, ice

Hope this answer correct ✌️

Answer:

Sample Response: The Jaguars would probably have the best finish in a basketball tournament because they have won the most games every season.

Explanation:

Answer:

Sample Response: The Jaguars would probably have the best finish in a basketball tournament because they have won the most games every season.

Explanation:

As shown on the graph, the Jaguars had the most wins each season compared to the Wolves and the Hawks. In conclusion, you can predict that the Jaguars would probably have the best finish in a basketball tournament.

Complete Question

A parallel-plate capacitor has square plates 20 cm on a side and 0.50 cm apart. If the voltage across the plates is increasing at the rate of 220 V/s, what is the displacement current in the capacitor?

Answer:

The value is  [tex]I = 1.416*10^{-8} \ A[/tex]

Explanation:

From the question we are told that

       The  length and breath of the square plate is  [tex]l = b = 20 \ cm = 0.2 \ m[/tex]

        The  distance of separation between each plate is [tex]k = 0.50 \ cm = 0.005 \ m[/tex]

       The rate of voltage  increase is  [tex]\frac{dV}{dt} = 200 \ V/s[/tex]

Generally the charge on the plate is mathematically represented as

  [tex]Q = CV[/tex]

Now C is the capacitance of the capacitor which is mathematically represented as

   [tex]C = \frac{\epsilon_o * A}{k}[/tex]

Here A is the cross-sectional area which is mathematically represented as

    [tex]A = l^2[/tex]

=>   [tex]A = 0.2^2[/tex]

=>   [tex]A = 0.04 \ m^2[/tex]

So  

     [tex]C = \frac{8.85 *10^{-12} * 0.04}{0.005}[/tex]

          [tex]C = 7.08*10^{-11} \ F[/tex]

Now the change of the charge flowing through the plates with time is mathematically represented as

        [tex]\frac{d Q}{dt} = C \frac{dV}{dt}[/tex]

So  

       [tex]\frac{d Q}{dt} = 7.08 *10^{-11} * 200[/tex]

       [tex]\frac{d Q}{dt} = 1.416*10^{-8}[/tex]

Generally   [tex]\frac{d Q}{dt} = \ current \ i.e \ I[/tex]

So

     [tex]I = 1.416*10^{-8} \ A[/tex]

hundredweight cwt is a standard unit of weight or mass used in certain commodities trading contracts.

Answer:

hundredweight

Explanation:

Answer:

t = 125 C

Explanation:

The force on a charge due to other charge is given by Coulomb's Law, as follows:

F = kq₁q₂/r²

where,

F = Electric Force = 5 N

k = Coulomb Constant = 9 x 10⁹ N.m²/C²

q₁ = magnitude of first charge = 15 nC = 1.5 x 10⁻⁸ C

q₂ = Magnitude of 2nd Charge = t = ?

r = distance between charges = 15 m

Therefore,

5 N = (9 x 10⁹ N.m²/C²)(1.5 x 10⁻⁸ C)t/(15 m)²

t = (5 N)/(0.04 N/C)

t = 125 C

Answer:

hello your question is incomplete attached below is the missing parts and the detailed solution of the problem

answer : [tex]\frac{1}{4\pi e_{0} } * \frac{q^2}{h^2} i_{y}[/tex] ( D )

Explanation:

The force on the top left charge from the bottom left can  be determined applying the equations/expression as represented in the detailed solution

option D was chosen because it accurately represents the force on the top left charge( positive y axis )  from the bottom left

Answer:

Explanation:

a ) Temperature at ground level is a field and it is scalar field .At any point in space near ground level  , the temperature is specific so it is a field .  It is scalar  because temperature has no direction .

b )

 Wind velocity at 100 feet above the ground is also a field but it is a vector field . At any point in space , the wind velocity is specific so it is a field .  It is vector   because velocity  has a particular  direction at any point .

c )

Gravitational force on Roessler Hall is a vector field because gravitational force also depends on location in space and it has direction.

d )

Height of a person in your group is not a space because it does not depend upon  location is space . It is same for all location .

e )

Height (above sea level) of the ground is a field  because it also depends upon location in space . It is scalar field .

f )

Slope of the surface of the earth is a scalar field .

Answer:

Marked image of the top of the object

Answer:

4hr

Explanation:

The total time Timmy spent in the whole journey is 4 hours.

The given parameters;

The total distance of the journey is calculated as follows;

[tex]( 1 - \frac{2}{5} ) \times total = 60 \ miles\\\\\frac{3}{5} \times total = 60\\\\total = \frac{60 \times 5}{3} \\\\total = 100 \ miles[/tex]

The amount of time for the whole journey is calculated as follows;

[tex]average \ speed = \frac{total \ distance}{total \ time} \\\\total \ time = \frac{100 \ miles }{25 \ mph} \\\\total \ time = 4 \ hours[/tex]

Thus, the total time Timmy spent in the whole journey is 4 hours.

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Answer:

distance means the length of any thing that have one starting point mad ending point

displacement means the short distance that move by an object due to help of any force

Answer:

there is examples and defination for distance and displacement

Answer:

27 Joules.

Explanation:

use the formula for kinetic energy:

KE = 1/2mv^2

A 54 kg pig runs at a speed of 1.0 m/s.

What is the pig’s kinetic energy?

Answer: 27 J

Answer:

The  resistance is  [tex]R = 2.88 \ \Omega[/tex]

Explanation:

From the question we are told that

    The  voltage  rating of the headlamp is  [tex]V_1 = 12 \ V[/tex]

     The  voltage of the power system is  [tex]p = 24 \ V[/tex]

     The  power rating of the headlamp  is  [tex]P = 50 W[/tex]

Generally the power which the resistor dissipates is mathematically represented as

      [tex]P = V_L * I[/tex]

=>       [tex]50 = 12 * I[/tex]

=>   [tex]I = 4.1667 \ A[/tex]

Generally the resistance is

      [tex]R = \frac{V_1 }{I}[/tex]

      [tex]R = \frac{12 }{4.1667}[/tex]

      [tex]R = 2.88 \ \Omega[/tex]

Answer:

Option C. 75 cm

Explanation:

To obtain the position of P, let us calculate the value of y as shown in the attached photo.

The value of y can be obtained as follow:

Anticlockwise moment = clockwise moment

Anticlockwise moment = 5 × 50

Anticlockwise moment = 250

Clockwise moment = y × 10

Anticlockwise moment = clockwise moment

250 = y × 10

Divide both side by 10

y = 250/10

y = 25 cm

Finally, we shall obtain the value of P as follow:

Since P lies after the pivot (i.e 50 cm), therefore,

P = 50 + y

y = 25

P = 50 + 25

P = 75 cm

Therefore, the position of P on the metre rod is 75 cm

Here ,

• Height of sign post = 30 m

• Distance between signpost and truck = 24 m

Let the

• Top of signpost = A

• Bottom of signpost = B

• The end of truck facing sign post be = C

Now as we can clearly imagine that the ladder will act as an hypotenuse to the Triangle ABC .

Where

• AB = Height of signpost = 30 m

• BC = distance between both = 24 m

• AC = Minimum length of ladder

→ AC² = AB² + BC² ( As we can see AB is perpendicular to BC )

→ AC² = (30)² + (24)²

→ AC² = 900 + 576

→ AC² = 1476

→ AC = 38.41875

or AC apx = 38.42

So minimum height of ladder = 38.42

This question can be solved by using the formula of "Pythagora's Theorem".

The ladder must be "38.42 m" long.

If we imagine the whole situation in terms of a right-angled triangle, we can safely assume the height of the billboard (which is the pole supporting the billboard) as the perpendicular of the right-angled triangle. The distance between the signpost and the truck can be assumed as the base of the triangle. The length of the ladder will then be acting as the Hypotenuse of the right-angled triangle.

The attached picture clearly depicts the condition explained in the above paragraph.

Now applying Pythagora's Theorem to this situation, we get:

[tex]Hypotenuse^2 = Perpendicular^2+Base^2\\Length\ of\ Ladder^2 = (30\ m)^2+(24\ m)^2\\L^2 = 1476\ m^2\\[/tex]

L = 38.42 m

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Answer:

  $900 trillion

Explanation:

If Alaska is 20% of the contiguous US, then the approximate area of interest is ...

  1200 miles × 3000 miles = 3.6×10^6 square miles.

The size of a dollar bill is about ...

  (6.5 cm)·(15.5 cm) = 100.75 cm^2

One mile is 160,934.4 cm, so 1 square mile is about ...

  1 mi^2 = (160,934.4 cm)^2 ≈ 2.59·10^10 cm^2

The number of dollars of interest is then ...

  (3.6 · 10^6 mi^2)(2.59 · 10^10 cm^2)/(100.75 cm^2) ≈ 9.3·10^14

  ≈ 930 × 10^12 . . . dollars

It would cost about 900 trillion dollars to cover the land area of the US in $1 bills.

Answer:

Radio waves have frequencies as high as 300 gigahertz(GHz)to as low as 30 hertz(Hz).At 300 GHz the corresponding wavelength is 1mm and at 30Hz is 10,000 km

The average wavelength of radio waves ​ranges from roughly two millimeters to more than 150 kilometers. The wavelengths of radio waves are the longest in the electromagnetic spectrum

It can be understood in terms of the distance between any two similar successive points across any wave for example wavelength can be calculated by measuring the distance between any two successive crests.

It is the total length of the wave for which it completes one cycle.

The wavelength is inversely proportional to the frequency of the wave as from the following relation.

C = νλ

They also have the lowest frequencies, ranging from around 4,000 cycles per second, or 3 kilohertz, to roughly 280 billion hertz, or 280 gigahertz.

The wavelengths of radio waves are the longest in the electromagnetic spectrum, ranging from roughly two millimeters to more than 150 kilometers.

To learn more about wavelength from here, refer to the link given below;

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Answer:

velocity = 62.89 m/s  in 58 degree measured from the x-axis

Explanation:

Relevant information:

Before the collision, asteroid A of mass 1,000 kg moved at 100 m/s, and asteroid B of mass 2,000 kg moved at 80 m/s.

Two asteroids moving with velocities collide at right angles and stick together. Asteroid A initially moving to right direction and asteroid B initially move in the upward direction.

Before collision Momentum of A = 1000 x 100 = [tex]$ 10^5$[/tex] kg - m/s in the right direction.

Before collision Momentum of B = 2000 x 80 = 1.6 x [tex]$ 10^5$[/tex]  kg - m/s in upward direction.

Mass of System of after collision = 1000 + 2000 = 3000 kg

Now applying the Momentum Conservation, we get

Initial momentum in right direction = final momentum in right direction = [tex]$ 10^5$[/tex]

And, Initial momentum in upward direction = Final momentum in upward direction = 1.6 x [tex]$ 10^5$[/tex]

So, [tex]$ V_x = \frac{10^5}{3000} $[/tex]  = [tex]$ \frac{100}{3} $[/tex]  m/s

and [tex]$ V_y=\frac{160}{3}$[/tex]  m/s

Therefore, velocity is = [tex]$ \sqrt{V_x^2 + V_y^2} $[/tex]

                                   = [tex]$ \sqrt{(\frac{100}{3})^2 + (\frac{160}{3})^2} $[/tex]

                                   = 62.89 m/s

And direction is

tan θ = [tex]$ \frac{V_y}{V_x}$[/tex]     = 1.6

therefore, [tex]$ \theta = \tan^{-1}1.6 $[/tex]

                   = [tex]$ 58 ^{\circ}$[/tex]  from x-axis

Answer:

A.

Explanation:

The answer is A because the weight of the crate is sitting on something rough. The roughness is going to resist anything that tries to move against it because the force being exerted by the 2 workers is not strong enough to get the crate to move out of its place on the mud since it's static.

The answer can't be B because ice is smooth and doesn't have any friction, the little girl can't move it because it's to heavy for her to move, not because there's friction acting against it.

The resistance one encounters when attempting to move a stationary object over a surface without also moving their bodies in relation to the surface is known as static friction. Thus, option A is correct.

An object cannot move down the path due to a force known as static friction. Two materials sliding over one another causes this friction. Conflict can be found everywhere around us. Consider how the ground is in contact with our feet when we walk.

When there is no relative motion between the object and the surface, a body is subjected to the effects of static friction. As a result, it can still act when the body is moving, but there shouldn't be any relative motion.

Therefore, Static friction slows the car down if the tire is moving so smoothly that the ground-contact surface is never slipping. Kinetic friction will cause the wheels to slow down if they are locked and sliding.

Learn more about Static friction here:

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Answer:

North east

Explanation:

r_1 = 100 i

r_2 = 200 (cos60i + sin60j) = 100i + 173.2j

By vector addition

r = r_1 + r_2 = 200i + 173.2j

Distance (Or magnitude) = sqrt(200^2 + 173.2^2) = 264 km

Direction from the starting point is  north of east.

Answer:

The maximum speed a subway train can attain between stations is 32.93 m/s.

Explanation:

Given;

maximum tolerable acceleration = 1.39 m/s²

distance between subway train, d = 780 m

The distance available to accelerate between stations = ¹/₂ x 780 m = 390 m

Apply the following kinematic equation to determine the maximum speed;

v² = u² + 2ad

v² = 0 + 2ad

v² = 2(1.39)(390)

v² = 1084.2

v = √1084.2

v = 32.93 m/s

Therefore, the maximum speed a subway train can attain between stations is 32.93 m/s.

Answer:

Let the resultant be

A= ( C2 + B2 )1/2

So

sin = B / ( C2 + B2 )1/2

And

cos = C / ( C2 + B2 )1/2

So the total force is

F = FA + FC + FY

= - k y2 i / c2 + k y2 j / B2 + k y Q ( -cos i + sin j ) / ( C2 + B2 )

F = 0

- k y2 i / C2 + k y2 j / B2 + k y Q ( -sin i + sin j ) / ( L2 + H2 ) = 0

- k y2 i / C2 + k y2 j / B2 + k y Q ( - C / ( C2 + B2 )1/2 i + B/ ( C2+ B )1/2 j ) / ( C2 + B2 )1/2 = 0

Q = - y ( C2 + B )3/2 / C3

k y2 / B2 + k y Q B/ ( C2 + B2 )3/2 = 0

Q = -y ( C2 + b2 )3/2 / B

So equating both " Q " values

- y ( C2 + B2 )3/2 / L3 = - y( C2 + B2 )3/2 / B

so the possible length and the relationship is C= B

Complete Question

The  complete question is shown on the first uploaded image  

Answer:

A

   [tex]v_w = 2.256 *10^{8} \ m/s[/tex]

B

  [tex]v_e = 2.21 *10^{8} \ m/s[/tex]

C

The  correct option is  B  

Explanation:

From the question we are told that

      The refractive  index of water is  [tex]n_w = 1.33[/tex]

      The  refractive  index of ethanol is  [tex]n_e = 1.36[/tex]

Generally the threshold velocity for creating Cherenkov light   from a charged particle as it travels through water is mathematically evaluated as

       [tex]v_w = \frac{c}{n_w }[/tex]

Where  c is the speed of light with value  [tex]c = 3.0 *10^{8} \ m/s[/tex]

       [tex]v_w = \frac{3.0 *10^{8}}{1.33 }[/tex]

       [tex]v_w = 2.256 *10^{8} \ m/s[/tex]

Generally the threshold velocity for creating Cherenkov light   from a charged particle as it travels through water is mathematically evaluated as

            [tex]v_e = \frac{ c}{n_e }[/tex]

  =>       [tex]v_e = \frac{3.0 *10^{8}}{1.36 }[/tex]

=>          [tex]v_e = 2.21 *10^{8} \ m/s[/tex]

Answer:

Velocity of the two balls after collision: [tex]60\; \rm m \cdot s^{-1}[/tex].

[tex]100\; \rm J[/tex] of kinetic energy would be lost.

Explanation:

Because the question asked about energy, convert all units to standard units to keep the calculation simple:

The two balls stick to each other after the collision. In other words, this collision is a perfectly inelastic collision. Kinetic energy will not be conserved. The velocity of the two balls after the collision can only be found using the conservation of momentum.

Assume that the system of the two balls is isolated. Thus, the sum of the momentum of the two balls will stay the same before and after the collision.

The momentum of an object of mass [tex]m[/tex] and velocity [tex]v[/tex] is: [tex]p = m \cdot v[/tex].

Momentum of the two balls before collision:

Based on the assumptions, the sum of the momentum of the two balls after collision should also be [tex]30\; \rm kg \cdot m \cdot s^{-1}[/tex]. The mass of the two balls, combined, is [tex]0.1\; \rm kg + 0.4\; \rm kg = 0.5\; \rm kg[/tex]. Let the velocity of the two balls after the collision [tex]v\; \rm m \cdot s^{-1}[/tex]. (There's only one velocity because the collision had sticked the two balls to each other.)

These two values are supposed to describe the same quantity: the sum of the momentum of the two balls after the collision. They should be equal to each other. That gives the equation about [tex]v[/tex]:

[tex]0.5\, v = 30[/tex].

[tex]v = 60[/tex].

In other words, the velocity of the two balls right after the collision should be [tex]60\; \rm m \cdot s^{-1}[/tex].

The kinetic energy of an object of mass [tex]m[/tex] and velocity [tex]v[/tex] is [tex]\displaystyle \frac{1}{2}\, m \cdot v^{2}[/tex].

Kinetic energy before the collision:

The two balls stick to each other after the collision. Therefore, consider them as a single object when calculating the sum of their kinetic energies.

Sum of the kinetic energies of the two balls right after the collision:

[tex]\displaystyle \frac{1}{2} \, m \cdot v^{2} = \frac{1}{2}\times 0.5\; \rm kg \times \left(60\; \rm m \cdot s^{-1}\right)^2 = 900\; \rm J[/tex].

Therefore, [tex]1000\; \rm J - 900\; \rm J = 100\; \rm J[/tex] of kinetic energy would be lost during this collision.

Answer:

An inelastic collision.

Explanation:

When a bullet impacts on the block, and is embedded in the block, the bullet-block system moves away together, with a single velocity together. This is called "an inelastic collision"

In this type of collision, only the momentum of the system is conserved.