You hold a polarizer plate in front of a computer screen (LCD/LED) in an orientation that lets no light through. What do you see if you put a piece of twisted plastic between the screen and the polarizer plate

Answer:

A change in protons changes the element identity. A change in neutrons changes the element's atomic weight, but does not change the identity.  More protons than electrons is a positive charge, more electrons than protons is a negative charge.

Explanation:

Answer:

a chicken

a chicken came first

Answer:

A Chicken

A chicken came first

Answer:

Float

Explanation:

The objects weight 14n and the buoyant force is 12n, so it will sink because the weight is greater than the buoyant force.  

Equation: p = m/v

True. Dimensional analysis can tell you whether an equation is physically correct.

Dimensional analysis is a powerful tool used in physics and engineering to check the dimensional consistency and validity of equations. By examining the dimensions of the quantities involved in an equation, dimensional analysis can determine whether the equation is physically correct.

It helps ensure that both sides of an equation have the same dimensions and units, which is essential for the equation to accurately represent the physical phenomenon it describes. If the dimensions do not match, it indicates an error or inconsistency in the equation and prompts a reassessment or correction.

Learn more about Dimensional analysis, here:

https://brainly.com/question/30303546

#SPJ4

Answer:Moon phases are determined by the relative positions of the Moon, Earth, and Sun.

Explanation:

Instead, the Moon's phase depends only on its position relative to Earth and the Sun. The Moon doesn't make its own light, it just reflects the Sun's light as all the planets do.

Answer:

oil

Explanation:

Hope I helped! Brainiest plz! Hope you make an 100% and have a wonderful day! -Amelia♥

Answer:

Gas

Explanation:

Hope this helps!

The required torque is 25386 N.m. to accelerate the merry-go-round.

To calculate the net torque required to accelerate the merry-go-round, we need to use the rotational equivalent of Newton's second law, which states that the net torque applied to an object is equal to its moment of inertia times its angular acceleration.

The moment of inertia of a uniform disk can be calculated as \($I = \frac{1}{2}mr^2$\), where \($m$\) is the mass of the disk and \($r$\) is its radius. Substituting the given values, we get

I = (31000kg)(7m)²/2 = 897250 kg.m²

The angular acceleration can be calculated by dividing the final angular velocity by the time taken for acceleration. Therefore,

\(\alpha = \frac{\omega_f - \omega_i}{t} = \frac{0.68 \text{ rad/s}}{24 \text{ s}} =\) 0.0283 rad/s²

Now, we can use the rotational equivalent of Newton's second law to find the net torque required. The equation is \($\tau = I\alpha$\), where \($\tau$\) is the net torque. Substituting the values we get

\($\tau\) = (897250 kg.m²)(0.0283 rad/s²) = 25386 N.m

Therefore, the net torque required to accelerate the merry-go-round from rest to 0.68 rad/s in 24 s is 25386 N\($\cdot$\)m.

In conclusion, the net torque required to accelerate the uniform disk merry-go-round can be calculated by using the rotational equivalent of Newton's second law, which relates torque, moment of inertia, and angular acceleration. The moment of inertia of a uniform disk can be calculated as \($\frac{1}{2}mr^2$\).

In this case, the net torque required to accelerate the merry-go-round was found to be 25386 \(N$\cdot$m.\)

To learn more about torque refer here:

https://brainly.com/question/25708791

#SPJ11

He travels a distance of 300 m in that time interval.

We know that we can be able to obtain the time that he travelled if we use the formula that applies to the average speed. In this case we are told in  a time of 30 seconds, he increases his speed steadily from 8.3 m/s to 11.7 m/s.

Thus;

distance = Average speed/Time

Distance = (8.3 + 11.7/2) * 30

Distance = 300 m

We can see that he would move through a distance of well about 300m as the velocity is increasing as shown here.

Learn more about average speed:https://brainly.com/question/12322912

#SPJ1

Answer:

This temperature is equivalent to 87°C.

.

The magnitude of the gain in v/v at the cut-off frequency depends on the transfer function of the system being considered. The cut-off frequency is typically defined .

as the frequency at which the output power of the system is half of the input power, which corresponds to a gain of -3 dB or a magnitude of 0.707 in v/v units. To calculate the gain at the cut-off frequency, one would need to know the transfer function of the system, The cut-off frequency is typically defined . which describes how the system responds to different frequencies. The gain at the cut-off frequency can then be determined by evaluating the transfer function at the cut-off frequency.

Learn more about  magnitude   here:

https://brainly.com/question/14154454

#SPJ11

The equivalent measurement of 11.5 milliamperes is 11.5 x 10⁻³ amperes.

The rate of flow of charge per unit cross - sectional area is called electric current. Mathematically -

i = dq/dt

From this -

dq = i dt

∫dq = ∫i dt

Q = it

Current is measured in amperes and is a Tensor quantity.

Given is a circuit that measured a current of 11.5 milli amperes.

Now, the current in milli amperes is used to give the measurement of small amount of current. One milliampere of current is equivalent to -

1 mA = (1/1000) A = 10 ⁻³ A

So, in order to calculate the total current in amperes, we will multiply 11.5 milliamperes by 10 ⁻³ as follows -

11.5 milliamperes [mA] = 11.5 x 10⁻³ amperes[A]

Therefore, the equivalent measurement of 11.5 milliamperes is 11.5 x 10⁻³ amperes.

To solve more questions on unit conversions, visit the link below-

https://brainly.com/question/12167212

#SPJ1

(a) When the swimmer steps off the diving board, his initial PE is 5800 J and his initial KE is zero.

(b) At the instant he is half way to the water just before he hits the water, half of his initial PE has been converted into KE, so his PE and KE are both equal to half of his initial PE: PE = KE = 0.5 * 5800 J = 2900 J.

(c) PE and KE just before he hits the water are 0 and 5800J.

(d) Height of the diving board above the water is 4.7 meters.

(e) Velocity of the swimmer just before he hits the water is 10.5 m/s.

The conservation of energy principle states that the initial potential energy (PE) plus the initial kinetic energy (KE) is equal to the final PE plus the final KE. When the swimmer steps off the diving board, his initial PE is 5800 J and his initial KE is zero.

As he falls towards the water, some of his potential energy is converted into kinetic energy (KE = 1/2 mv^2). At the instant he is half way to the water just before he hits the water, half of his initial PE has been converted into KE, so his PE and KE are both equal to half of his initial PE:

PE = KE = 0.5 * 5800 J = 2900 J

Since the mass of the swimmer is 62 kg, the velocity v can be calculated from the equation:

PE = mgh

h = PE / (m * g) = 2900 J / (62 kg * 9.8 m/s^2) = 4.7 m

So the height of the diving board above the water is 4.7 meters.

Finally, the velocity of the swimmer just before he hits the water can be calculated from the equation:

KE = 1/2 mv^2

v = √(2KE/m) = √(2 * 2900 J / 62 kg) = 10.5 m/s

So the velocity of the swimmer just before he hits the water is 10.5 m/s.

To know more about potential energy please refer:

https://brainly.com/question/9349250

#SPJ4

The complete question is:

When a swimmer stands on a high diving board, he has 5800 J of PE relative to the surface of the water. (a) What is his PE and KE the instant he steps off the board (b) when he is half way to the water (c) just before he hits the water. If the swimmer's mass is 62 kg (d) what is the height of the board above the water (e)the swimmer's velocity just before he hits the water?

Frozen preparations such as ice cream, sorbet, gelato, granite can be melted and refrozen, except gelato which cannot be melted and refrozen. This is because the ice cream, sorbet, and granite all contain a high content of fat which allows them to melt and refreeze successfully without becoming damaged.

However, the process of freezing the gelato forms tiny ice crystals, which provide its unique texture. If gelato is melted, it will lose its texture and will not re-freeze successfully.A gelato is a dense Italian ice cream that has a creamy texture and has a lower fat content than traditional ice cream. It is made by mixing milk, sugar, and flavorings, such as nuts or chocolate, and then churned to incorporate air into the mixture.

So, the ice cream, sorbet, and granite all contain a high content of fat which allows them to melt and refreeze successfully without becoming damaged.

Learn more about Frozen at

https://brainly.com/question/29861913

#SPJ11

Answer:

4.695 m/s

Explanation:

We can use the law of conservation of momentum to solve this problem. The law of conservation of momentum states that the total momentum of a closed system remains constant if there are no external forces acting on it. In this case, the two balls form a closed system.

The total momentum before the collision is:

p_before = m1v1 + m2v2

where m1 and v1 are the mass and velocity of the first ball, and m2 and v2 are the mass and velocity of the second ball.

Plugging in the values given in the problem, we get:

p_before = (0.32 kg) * (5.1 m/s) + (0.75 kg) * (0 m/s) = 1.632 kg*m/s

The total momentum after the collision is:

p_after = m1v1' + m2v2'

where v1' and v2' are the velocities of the first and second ball after the collision.

We know the velocity of the second ball after the collision:

v2' = 2.38 m/s

To find the velocity of the first ball after the collision, we can use the conservation of momentum:

p_before = p_after

m1v1 + m2v2 = m1v1' + m2v2'

Plugging in the values we know and solving for v1', we get:

v1' = (m1v1 + m2v2 - m2*v2') / m1

v1' = (0.32 kg) * (5.1 m/s) + (0.75 kg) * (0 m/s) - (0.75 kg) * (2.38 m/s) / (0.32 kg)

v1' = 6.48 m/s - 1.785 m/s

v1' = 4.695 m/s

Therefore, the velocity of the 0.32 kg ball after the collision is 4.695 m/s

The final velocity of the first ball is approximately 3.14 m/s. We can solve this physics problem using the principle of conservation of momentum. The total momentum before the collision is equal to the total momentum after the collision, which allows us to solve for the unknown final velocity of the first ball.

Explanation:

To solve this problem, we can use the principle of conservation of momentum.The preliminary momentum of the machine is identical to the very last momentum.Since the second one ball is first of all at rest, its preliminary momentum is zero. The initial momentum of the first ball is given by the product of its mass and velocity: 0.32 kg × 5.1 m/s.

Using the principle of conservation of momentum, we can set up the equation: (0.32 kg × 5.1 m/s) = (0.32 kg × v1) + (0.75 kg × 2.38 m/s), where v1 represents the final velocity of the first ball.

By solving this equation, we can find that the final velocity of the first ball is approximately 3.14 m/s.

https://brainly.com/question/32309314

#SPJ2

The amount of charge that can be placed on a capacitor depends on the capacitance, which is determined by the area of each plate.

The capacitance of a capacitor is given by the formula:

C = ε0 * (A / d)

Where:

C is the capacitance,

ε0 is the permittivity of free space (a constant value),

A is the area of each plate,

d is the separation between the plates.

To determine the amount of charge, we can rearrange the formula as:

Q = C * V

Where:

Q is the amount of charge,

V is the voltage across the capacitor.

Given that the area of each plate is 7.3 cm², we can use this information to calculate the capacitance. However, the question does not provide the voltage or any other information required to calculate the amount of charge accurately. Without knowing the voltage or other relevant parameters, it is not possible to determine the exact amount of charge that can be placed on the capacitor.

To know more about capacitor click here:

https://brainly.com/question/31627158

#SPJ11

Answer:

Earth's tilt causes the sun's rays to hit unevenly

Explanation:

The Earth orbit or rotate in it's axis or orbital plane. When it's rotate, it tilt from the sun rays Earth's tilt causes the sun's rays to hit the Earth unevenly Earth's axis is tilted about 23 degrees, which causes a variation or differences in the sun's latitude.causing it to vary by 23 degrees north of the equator at the start of northern summer to 23 degrees south of the equator at the start of northern winter. On Earth, that tilt is the primary reason for different seasons.

Displacement at 10s

\(\\ \bull\tt\dashrightarrow Velocity\times Time\)

\(\\ \bull\tt\dashrightarrow 5(10)=50m\)

Displacement at next 5s

\(\\ \bull\tt\dashrightarrow -8(5)=-40m\)

Now

Total displacement=50-40=10m

The major difference between a bimetallic stemmed thermometer and a thermistor is the principle of temperature measurement they utilize.

A bimetallic stemmed thermometer consists of two different metals bonded together. These metals have different coefficients of thermal expansion, causing the strip to bend when exposed to temperature changes. The degree of bending is proportional to the temperature, allowing the measurement of temperature based on the mechanical deformation of the bimetallic strip.

On the other hand, a thermistor is a type of temperature sensor that relies on the change in electrical resistance with temperature. Thermistors are typically made of semiconductor materials that exhibit a significant change in resistance as the temperature varies. The resistance of a thermistor decreases as the temperature increases, and vice versa. This change in resistance is used to measure and indicate the temperature.

In summary, while a bimetallic stemmed thermometer operates based on the mechanical deformation of a bimetallic strip, a thermistor measures temperature by monitoring the change in electrical resistance. Each type of thermometer has its advantages and applications based on the specific temperature range, accuracy requirements, and sensitivity needed in various contexts.

Learn more about bimetallic stemmed thermometer from the given link. https://brainly.com/question/24881415

#SPJ11

Answer:

The value is \(s = 110.32 \ m\)

Explanation:

From the question we are told that

   The initial velocity is  u=  46.5 m/s

Generally from kinematic equations we have that

     \(v^2 = u^2 + 2as\)

Here  \(a = -g = -9.8 \ m/s^2\)

   The negative sign is because it is moving against gravity

At maximum height v =  0 m/s        

So

     \(0 = (46.5)^2 + 2* (-9.8)s\)

=>   \(s = 110.32 \ m\)

The Kinetic Energy of the object of mass 10 kg and is moving with a speed of 12 km/h is 55.44 joules.

The energy of a body by due to its motion is called kinetic energy. Mathematically -

E[K] = 1/2mv²

Given is an object with a mass of 10 kg is moving with a speed of 12 km/h.

We can calculate the kinetic energy from the formula discussed above as -

E[K] = 1/2mv²

Velocity of object = [v] = 12 km/h = 12000/3600 m/s = 3.33 m/s

Substituting the values, we get -

E[K] = 1/2 x 10 x 3.33 x 3.33 = 55.44 joules

Therefore, the Kinetic Energy of the object of mass 10 kg and is moving with a speed of 12 km/h is 55.44 joules.

To solve more questions on Kinetic energy, visit the link below-

https://brainly.com/question/10703924

#SPJ2

By 2050, according to the International Renewable Energy Agency (IRENA), 90 percent of the world's electricity can and ought to come from renewable sources.

Through 2050, the EIA predicts that the world's electricity production will increase by 1.8% year. According to EIA estimates, global electricity production would increase by approximately 20 trillion kWh from 2018 levels to nearly 45 trillion kWh by 2050.

This energy is required for electrical production, heating, and transportation. The world's electricity is generated by renewable sources, such as hydroelectric, solar, and wind energy, for about 30% of the time.

To know more about Renewable Energy visit:-

https://brainly.com/question/14620186

#SPJ4

To maintain the original flux, induced current is in the direction of original current. Hence, potential difference will increase in the direction of current.

In the direction of the electric field, electric potential decreases because electric potential is the work done against the direction of electric field.

The direction of an electric current is the direction in which a positive charge would move and electric current flows from higher to lower electric potential.

If a charge is moving in the direction that it would normally move, then its electric potential energy is decreasing. If a charge is moved in a direction opposite to that it would normally move, then its electric potential energy is increasing.

To know more about potential difference, refer

https://brainly.com/question/24142403

#SPJ4

When the current in a cable is reversed, the vertical axis intercept switches from negative to positive due to the change in the direction of the magnetic field.

This occurs because the Lorentz force, which governs the interaction between a moving charged particle and an external magnetic field, depends on the direction of both the magnetic field and the current. When the current reverses, the direction of the magnetic field also changes, causing the force to act in the opposite direction.

Consequently, the vertical axis intercept, which represents the balance between the gravitational and magnetic forces, switches its sign from negative to positive, indicating a change in the equilibrium point.

Learn more about Lorentz force at https://brainly.com/question/14432710

#SPJ11

Answer:

a= (2.3 m/s) / (3.0s) = 0.77 m/s2F= ma20.0 N = m (0.77 m/s2)m = 26 kgForce is measured with?Newtons (N) --> 1 N = 1 kg m/s2

Explanation:

GET THAT A+ MISS GURL

Answer:

300N

Explanation:

Given parameters:

Mass of car  = 1500kg

Initial velocity  = 0m/s

Distance covered  = 45m

Time  = 15s

Unknown:

Net force applied  = ?

Solution:

From Newton's second law:

  Force  = mass x acceleration

  Force  = mass x \(\frac{v - u}{t}\)  

v is the final velocity

u is the initial velocity

t is the time taken

    Final velocity  = \(\frac{45}{15}\)   =3m/s

 Force  = 1500 x \(\frac{3 - 0}{15}\)   = 300N