A 50 mW laser beam is polarized horizontally. It then passes through two polarizers. The axis of the first polarizer is oriented at 30 degrees from the horizontal, and that os the second is oriented at 60 degrees from the horizontal. What is the power of the transmitted beam

Answer:

Pressure exerted = 500 Pa

Explanation:

The formula for pressure is as follows:

[tex]Pressure = \frac{Force \space\ applied}{Area}[/tex]

In this case,

Force applied = 100N

Area = 40cm × 50cm = 2000cm² = 2000 × 10⁻⁴ = 0.2m²

Substituting these values into the formula:

Pressure = [tex]\frac{100}{0.2}[/tex]

⇒ Pressure = 500 Pa

Answer:

500Pa

Explanation:

Pressure = Force / Area where area is in [tex]m^{2}[/tex].

Firstly, lets convert both area dimensions into metrers.

40cm = 40/100 m = 0.4m

50cm = 50/100 m = 0.5m

Area of Bottom area of box = 0.4m x 0.5m = [tex]0.2m^{2}[/tex]

Pressure = [tex]\frac{100N}{0.2m^{2} }[/tex]

= 500Pa

Answer:

The required steady force of each rocket is 28.79 N

Explanation:

mass of the satellite, M=3900 kg

radius, r=4.3 m

mass of rocket, m=210 kg

time, t=5.4 min

Moment of Inertia:

I = 1/2 (Mr^2) + 4mr^2

I = 1/2 ( 3900* (4.3)^2) + 4 (210)*(4.3)^2

I = 51587.1 kg m^2

the angular acceleration is:

a= w/t

here w= 2*π*30

so,

a= 2*π*30 / 5.4* 3600

a=0.0096 rad/ s^2

the Torque becomes:

T=I*a = 4r*F

( 51587.1 )*(0.0096) = 4*4.3* F

F= 28.79 N

the required steady force of each rocket is 28.79 N

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The acceleration of the bus is 1.1 m/s²

Acceleration is defined as the change in the velocity of an object with time.

Change in velocity of the bus = 60 - 80

Change in velocity of the bus  = -20 km/h = -5.5 m/s

Time = 5 seconds

Acceleration = -5.5/5

Acceleration = 1.1 m/s²

In conclusion, acceleration is the rate of change of velocity with time.

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The charge is obtained as 1.5 * 10^-5 C.

The electric potential is the work done in moving a unit charge from one point to another.

Now we have;

W = -QdV

W = Work done in joules

Q = charge

dV = voltage change

Hence;

4.3×10−4 =- Q( 120 - 400)

Q = 4.3×10−4/280

Q = 1.5 * 10^-5 C

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Answer: An 80 kg hiker climbs to the top of a tall hill and builds up 470000J of gravitational potential energy. With this energy, he can climb up to 600m of Hight.

Explanation: To find the answer, we need to know about the Gravitational potential energy.

                    [tex]U=mgh[/tex]

U is the gravitational potential energy, m is the mass of the body, g is the acceleration due to gravity and h is the height.

                      [tex]h=U/mg[/tex]

                        [tex]h=470000/(80*9.8)=599.98=600 m[/tex]

Thus, from the above calculation, we can conclude that, he can climb up to 600m of Hight.

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Answer: 600 m

Explanation: Got correct on Edge

a)  q_shell = -Q ,  b)  q_shell = -Q

a) We can solve this exercise using Gauss's law

Ф = ∫ E. dA =  /ε₀

For this we use a Gaussian surface that takes advantage of the symmetry of the problem, we select a sphere where this force of the spherical plastic shell.

In this case, the electric field lines coincide with the radii of the sphere and the scalar product reduces to the algebraic product, the area of ​​the sphere

     A = 4 π r²

fi = E 4π r² = q_{int} /ε₀

apply this formula to our case, we have that the charge inside the Gaussian sphere is

   q_{int} = q_sphere + q_shell

the charge of the sphere is Q and the requirement is that there is no electric field outside the Gaussian sphere, for this, the net charge inside it must be zero

      0 = Q + q_shell

      q_shell = -Q

b) In Gauss's law, only the charge inside the Gaussian surface matters, not its position, therefore if the charge is not in the center the result remains the same.

     q_shell = -Q

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Answer:

Fixed pulleys are a very common pulley. These pulleys are secured to a single spot. ...

Movable Pulleys are yet another type of pulley. ...

Compound Pulley Systems are a combination of both movable and fixed pulleys.

Explanation:

there are three different types of pulleys:

Fixed pulleys are a very common pulley. These pulleys are secured to a single spot. ...

Movable Pulleys are yet another type of pulley. ...

Compound Pulley Systems are a combination of both movable and fixed pulleys.

The magnitude of the net force the students exert on the crate is 6.40 N.

We have to apply the Pythagorean theorem so we have:

F= [tex]\sqrt{5^{2}+4^{2} }[/tex]

=[tex]\sqrt{25+16}\\[/tex]

=[tex]\sqrt{41}[/tex]

Finally, we have:

F = 6.40 N

In mathematics, the Pythagorean theorem, or Pythagoras' theorem, is an essential relation in Euclidean geometry some of the three sides of a right triangle. It states that the vicinity of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other aspects.

Pythagorean theorem, the geometric theorem that the sum of the squares at the legs of a right triangle is identical to the rectangular at the hypotenuse (the facet opposite the right perspective) or, in familiar algebraic notation, a2 + b2 = c2.

A Pythagorean triple consists of three fantastic integers a, b, and c, such that a2 + b2 = c2. this sort of triple is normally written (a, b, c), and an instance is (3, four, 5). If (a, b, c) is a Pythagorean triple, then so is (ka, kb, kc) for any wonderful integer.

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True. Immediately after the switch is closed, current only flows through the capacitor and not through the resistor. This is because the resistor offers resistance to the current flow while the capacitor acts as a short in the circuit.

What is a RC circuit?

Consider the circuit diagram shown below. This circuit is known as an RC circuit. In an RC circuit:

Supposing that the capacitor has been kept uncharged for a long period of time, at this instant when the switch is closed, only the current flows through the capacitor and not through the resistor.

This is because the resistor offers resistance to current flow while the capacitor acts as a short in the circuit.

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The work done on the SUV by the stopped car is .

Given:- A driver in a 2,000 kg SUV moving at 15 m/s crashes into a stopped car and the truck to be slowed to 10 m/s.

To Find:- We have to find the work done on the SUV by the stopped car.

By using the concept of speed it will be solved.

According to the problem,

The work done on the SUV by the stopped car is .

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The pair of protons with velocity 1000 km/s will get closer together before they repel each other.

To find the correct statement, we need to know about the motion of protons.

Thus, we can conclude that the pair of protons with velocity 1000 km/s will get closer together before they repel each other.

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Answer:Solution

verified

Verified by Toppr

Given:u=−10cm               f=20cm        (convex lens)

To find: v and image's nature.

Solution: From lens formula

v

1

​

−

u

1

​

=

f

1

​

v

1

​

+

10

1

​

=

20

1

​

Explanation:

The diameter of the sphere is 2cm.

From the diagram, the first sphere on the ruler is at 4cn and the last sphere is at 12cm.

Therefore, the length will be:

= 12 - 4.

= 8cm

The diameter of one sphere will be:

= Length / 4

= 8/4

= 2

Therefore, the diameter of the sphere is 2cm.

Note that the second question wasn't found online.

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The type of light which best for checking the security features of a California issued id or driver license is a UV light.

This is referred to as an ultraviolet light and is an electromagnetic radiation which glows in the dark.

This is why it is referred to as blacklight image and helps to see the details of the ID under any condition.

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Displacement will be zero.

Displacement:

In the given question, we start from one point and finish at the same point around the circular track. Therefore there is no distance between the initial and final points because they are the same. That's why the displacement is zero.

Distance:

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Answer:

It is given that the image is formed at a distance of 50cm from the lens. And since the image is real, v = +50cm. This means that u = -50cm. Therefore, the needle must be placed at a distance of 50cm from the lens.

Explanation:

Answer:

In a neutralization reaction, hydronium and hydroxide ions react to form water.

Explanation:

Acids/Bases and how they interact:

A Bronsted-Lowry base is a substance that tends to bond with and "steal" a hydrogen ion, while an acid is a molecule containing a hydrogen ion that prefers to dissociate. Acids "give up" their hydrogen ions to water molecules in water, resulting in the formation of a hydronium ion. The pH of a given solution is determined by the amount of hydronium ions present.

A quick neutralization reaction takes place when a base is added to an acid because bases want to "take" the hydrogen. We have the ideal combination of bases that want to "take" the hydrogen ion and acids that want to "give up" the hydrogen ion, which allows them to neutralize one another. A conjugate base is created when hydrogen separates from an acid; having had its hydrogen torn from the complex, it may now receive a hydrogen (i.e., acts as a base). Once the base has a hydrogen, it behaves as a conjugate acid; it may then "lose" that hydrogen and behave as an acid.

Depending on which form the molecule favors, the acid's potency varies. The fact that hydrochloric acid (HCl) fully dissociates in aqueous solutions makes it a powerful acid:

HCl + H₂O -> Cl- + H₃O+

That is to say that the reaction equation strongly favours the right side.

Acetic acid, on the other hand, is a weak acid because only a small part of it dissociates:

CH₃COOH + H₂O <--> CH₃COO- + H₃O+

In contrast to the bulk of the chemical, which is shown on the left in the uncharged state, only a minor portion of acetic acid dissociates.

This brief explanation of acids and bases anthropomorphizes chemical substances as aware creatures with specific preferences for certain actions. These so-called "preferences" are, in reality, rough summaries of the relative stabilities of the compounds (acid vs. its conjugate base), mostly as a result of electrical processes.

Answer:

hydrogen and water other answer is wrong

Explanation:

Answer:

1274 J

Explanation:

PE = m g h

    = 5 * 9.8 * 26 = 1274 J

Answer: Johannes Kepler challenged the traditional belief that, the orbits of the planets were spherical, showing that the five known planets moved around the sun in elliptical paths.

Explanation: To find the correct explanation, we have to know more about the History of planetary motion and the Kepler's laws.

Thus, from the above explanation we can conclude that, Johannes Kepler challenged the traditional belief that, the orbits of the planets were spherical, showing that the five known planets moved around the sun in elliptical paths.

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The statement 'establishing a high critical value in a statistical test is associated with more confidence' is TRUE.

The statistical significance is a arbitrary value used to indicate that data collected can be used to confirm (or reject) my working hypothesis.

The most widely used value to measure the statistical significance is the p threshold.

In conclusion, the statement 'Establishing a high critical value when calculating the results of a statistical test means that a researcher will have more confidence in finding significance than when a lower critical value is established' is TRUE.

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Answer:

The answer is F or false

Explanation:

correct edge 2023

The maximum acceleration will be 1.6m/s^2

Let a1 = 5.0m/s^2

the maximum acceleration of the truck alone. The force produced by the engine to accelerate the truck in this situation is

F = ma1

with m being the mass of the truck alone.

If we attach a bus of twice the mass of the truck, now the whole system (truck+bus) has a mass of (m+2m)=3m. And in this case, the force produced by the engine is

F = 3ma2

with a2 being the new acceleration.

The engine is always the same, so the force produced is still the same, so we can equalize F written in the first equation and in the second equation:

ma1 = 3ma2

and find a2, the new acceleration

a2 = ma1/3

a2 = 5/3 m/s^2

Therefore a2 = 1.6m/s^2

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The coefficients in order are 2, 1, 1

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products.

In other words, the mass and the charge are balanced on both sides of the reaction.

According to the given situation,

To balance the the chemical equation,

Step 1 - Add a 2 on the Na2HPO4:

2(Na₂HPO₄)  ⇒ Na4P₂O₇ + H₂O

Step 2 -Next take count of each element on both sides to see if the 2 is balanced or not:

On the left there are 4 Na, 2 H, 2 P, and 8 O

On the right there are 4 Na, 2 H, 2 P, and 8 O

Step 3 - Now we will divide by 2

i.e. 2 NA.H. P

The coefficient of  Na is 2 , Coefficient of H is 1 and Coefficient of P is 1

Therefore,

The coefficients in order are 2, 1, 1.

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This is a uniform rectilinear motion (MRU) exercise.

To start solving this exercise, we obtain the following data:

To calculate the distance, multiply the speed by the time.

We apply the following formula: d = v * t

We clear our data in the formula:

[tex]\bf{d=3.8\dfrac{m}{\not{s}}*15 \not{s} }[/tex]

[tex]\bf{d=57 \ m}[/tex]

The baseball in 15 seconds will roll a distance of 57 meters.

Answer:

( Galileo )discovered evidence to support Copernicus' heliocentric theory when he observed four moons in orbit around Jupiter

Two infinite sheets of current flow parallel to the y-z plane. The left-hand sheet, which intersects the x-axis at x = 0, consists of an infinite array of wires parallel to the z-axis with a density of n = 910 wires/m and current per wire of IL = 0.14 A in the +zdirection.

The right-hand sheet, which intersects the x-axis at x = a = 12 cm, is identical to the left-hand sheet, except that it has a current per wire of IR = 0.14 A in the -z-direction.

(a) Calculate the y-components of the net magnetic field in the following places:

x1 = -15 cm, x2 =6 cm, and x3 = 24 cm. (The x- and z-components of the B-field are zero.)

B(x1)y = T

B(x2)y = T

B(x3)y = T

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Answer:

4 decreasing energy of a closed system

Option A is correct as horizontal angulation is the side- to -side angulation.

When the dental X-ray tube head is positioned and the center ray is pointed in a horizontal, or side-to-side, plane, this is referred to as horizontal angulation.

It remains the same when using the paralleling and bisecting techniques.

The central ray should not be directed parallel to the curvature of the arch.

Instead, it is pointed perpendicular to the curve of the tooth arch and film to prevent errors in x-ray interpretation.

A radiograph with "open" contacts is the result of proper horizontal angulation.

A radiograph with "overlapped" contacts results from incorrect horizontal angulation.

Hence, option A is correct

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If you double the number of turns and double the length, the value N/L remains the same and hence the magnitude of the magnetic field stays the same.

A solenoid is a device comprised of a coil of wire, the housing and a moveable plunger (armature). When an electrical current is introduced, a magnetic field forms around the coil which draws the plunger in.

The magnitude of the magnetic field in an infinite (L>>R) solenoid, is proportional to:

I*N/L

Where

I = current

N = number of turns

L = length of wire

So, if you double the number of turns and double the length, the value N/L remains the same and hence the magnitude of the magnetic field stays the same.

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The drop is the same for both pipes.

The analogy between water pressure, water flow, voltage, and current:

Both the pressure created by the pump at the top of the pipes and the pressure at the bottom of the pipes are equal (taken to be zero). Since the fluxes vary, the pressure drop across each pipe is also variable. This circuit is an analog of parallel resistors, where the voltage for each resistor is the same, but the currents vary if the resistances are not equal.

When water flows from a small pipe to a large pipe, the flow (measured, for instance, in gallons per minute) is the same in both pipes, because the amount of water entering one pipe must equal the amount leaving the other. Otherwise, water would build up in the pipes. For the same reason, circuit components connected in series have a constant total electric current. Water pressure and total electric potential (voltage) are comparable, and a pump is comparable to a battery. Similar to how electricity going through a resistor decreases in voltage, water traveling through pipes lose pressure. In a battery, chemical reactions cause charges to flow against the average due to the pump's utilization of mechanical work to increase the potential energy of the water.

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