Which one of the following provides the most insulation? (2 Points)
A) 1 inch of Fiberglass
B) 1/8th inch of Plain Glass
C) 6 inches of Common brick

Answer:

64 codons

Of the total of 64 codons, 61 encode amino acids and 3 specify termination of translation

Explanation:

If you jump straight up while inside a fast-moving train that gains speed, you land slightly behind your original position. This is because of the principle of inertia, which states that an object at rest or in motion will stay in that state unless acted upon by an external force.

When you jump straight up inside the train, you are initially moving at the same speed as the train. However, as you are airborne, you are no longer in contact with the train and not affected by its acceleration. The train continues to gain speed, but you retain your initial speed when you jumped.

As a result, when you land back on the train, it has moved slightly forward due to its increased speed. Since you have maintained your initial velocity, which is now slower relative to the train, you land slightly behind your original position. This is because the train has moved ahead while you were in the air, creating a relative displacement between you and the train.

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The collision is equal to the total momentum after the collision is 3.00 m/s. and  The energy lost in the collision is \(E_{lost} = 1.25 \times 10^5 J\)

Momentum is a measure of an object's resistance to changes in its motion due to a force. It is the product of an object's mass and its velocity, and is represented by the equation p = mv, where p is momentum, m is mass, and v is velocity. Momentum is a vector quantity, which means it has both a magnitude and a direction. Momentum can be expressed in terms of an object's speed and direction of motion, as well as its mass.

This is because the momentum of the four cars is conserved, which means the total momentum before the collision is equal to the total momentum after the collision. This gives the equation:
\((2.50 \times 10^4 kg)(4.00 m/s) + (3 x 2.50 \times 10^4 kg)(2.00 m/s) = (4 \times 2.50 \times 10^4 kg)(V)\)
Solving this equation for V gives V = 3.00 m/s.

b) The energy lost in the collision is equal to the difference in kinetic energy before and after the collision, which is given by the equation:

\(E_{lost} = (1/2)(2.50 \times 10^4 kg)(4.00 m/s)^2 - (1/2)(4 \times 2.50 \times 10^4 kg)(3.00 m/s)^2\\E_{lost} = 1.25 \times 10^5 J\)
The energy that is lost in the collision is converted into thermal energy due to the friction of the cars as they collide, as well as sound energy as the collision creates sound waves.

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a. The original speed of the bullet is 300.6 m/s.

b. The horizontal distance travelled by the wood - bullet system is 0.27 m.

c. The speed of the four car after the collision is 1.75 m/s.

d. The energy loss after the collision is -196,875 J.

The original speed of the bullet is calculated as follows;

m₁u₁ + m₂u₂ = v(m₁ + m₂)

where;

0.01u₁ + 5(0) = 0.6(0.01 + 5)

0.01u₁ = 3.006

u₁ = 3.006/0.01

u₁ = 300.6 m/s

The time of motion of the wood is calculated as follows;

t = √(2h/g)

t = √ (2 x 1 / 9.8)

t = 0.45 s

The horizontal distance travelled by the wood - bullet system is calculated s;

X = 0.45 s x 0.6 m/s

X = 0.27 m

The speed of the four car after the collision is calculated as follows;

(2.5 x 10⁴ x 4)    +  3(2 x 2.5 x 10⁴) = v (4 x 2.5 x 10⁴)

175,000 = 100,000v

v = 1.75 m/s

The initial kinetic energy of the cars is calculated as;

K.Ei = ¹/₂ x 2.5 x 10⁴ x 4²   +  3 (¹/₂ x 2.5 x 10⁴ x 2²)

K.Ei = 350,000 J

The final kinetic energy of the cars;

K.Ef =  4 (¹/₂ x 2.5 x 10⁴ x 1.75²)

K.Ef = 153,125 J

Loss in energy = K.Ef - K.Ei

= 153,125 J - 350,000 J

= -196,875 J

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The voltage across the electrical element is approximately 13.63 V.

To find the voltage across the electrical element, we can use the formula:

Power (P) = Voltage (V) * Current (I)

The power is given by the energy absorbed divided by the time:

P = Energy / Time

Given:

Energy (E) = 1.8 J

Time (t) = 0.44 s

Current (I) = 300 mA = 300 * 10^(-3) A

First, let's calculate the power:

P = E / t

P = 1.8 J / 0.44 s

P ≈ 4.09 W

Now, rearranging the formula for power:

V = P / I

V = 4.09 W / (300 * 10^(-3) A)

V = 4.09 W / 0.3 A

V ≈ 13.63 V

Therefore, the voltage across the electrical element is approximately 13.63 volts.

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Answer:

I'm fairly sure that the answer is "100 m/s"

Explanation:

Fnet=ma

a=Fnet/m

a=4 N / 0.040 kg

a=100 m/s

please check my work before you submit, i don't wanna let cha down :)

Answer:

2m

Explanation:

The closer the objects are, the more gravitational force there is

Answer:

The magnetic force acting on the proton is 1.68 x 10^-18 N.

Explanation:

magnetic field, B = 5 T

speed , v = 2.1 m/s

charge q = 1.6 x 10^-19 C

Angle, A = 90 degree

The magnetic force on the charge particle is given by

\(F = q v B sin A\\\\F = 1.6\times 10^{-19}\times 2.1\times 5\times sin 90\\\\F = 1.68\times 10^{-18} N\)

Hi there!

We can use the kinematic equation:

vf = vi + at

vf = final velocity (m/s)

vi  = initial velocity (m/s)

a = acceleration (m/s²)

t = time (sec)

Rearrange to solve for acceleration:

(vf - vi)/t = a

(30 - 25)/10 = 5/10 = 0.5 m/s²

Answer:

Explanation: vf-vi/t = a

a=30m/s -25 m/s/10 s

a =5m/s /10s

a =1/2 m/s²

Social media is the example of an external communication.

The procedures in charge of communicating with individuals and groups outside of your organization are known as external communications. Customers, companies, suppliers, partners, investors, government organizations, and law enforcement are a few of these.

Email, brochures, newsletters, posters, advertisements, and other types of multi-media marketing are common examples of external communication that are used to entice clients, partners, and suppliers to engage in profitable business dealings.

External communications' main objective is to convey to the public an important message about the organization's efforts and level of excellence. An aspect of communication that organizations cannot directly control is informal external communication.

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Let's see

For series connection

\(\\ \rm\Rrightarrow R_{eq}=R_1+R_2+R_3\dots\)

For parallel connection

\(\\ \rm\Rrightarrow \dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+\dfrac{1}{R_3}\dots\)

Answer + Explanation:

To calculate how many years the investment will be able to cover Rayelle's college costs, we need to know the annual cost of tuition, fees, room, and board at a public college. Let's assume that this cost is $20,000 per year.We also need to know the future value of the investment after 15 years. Using the compound interest formula, we can calculate that the future value of the investment will be:

FV = PV * (1 + r/12)^(n*12)

where PV is the present value of the investment, r is the annual interest rate, n is the number of years, and FV is the future value of the investment.Plugging in the numbers, we get:

FV = $15,000 * (1 + 0.045/12)^(15*12) = $29,286.95

So, after 15 years, the investment will be worth $29,286.95.To calculate how many years the investment will be able to cover Rayelle's college costs, we can divide the future value of the investment by the annual cost of college, and then divide by 12 to get the number of years in months. This gives us:

Years = FV / (Annual cost of college) / 12

Years = $29,286.95 / $20,000 / 12 = 12.24 years

So, the investment will be able to cover Rayelle's college costs for approximately 12 years and 3 months. Rounded to the nearest month, the answer is 147 months. Therefore, the investment will be able to cover Rayelle's college costs for about 147 months.

Hope this helps!

- Dante

Answer:

it is A

Explanation:

i had the question

Leavitt was the first to figure out how to estimate the distance to galaxies, opening up a whole new realm of knowledge about the universe despite being isolated because of her deafness.

By gauging the brightness of a number of Cepheid variable stars in the galaxy, they determined the distance—56 million light-years—from Earth. A group of pulsating stars known as cepheid variables is used as "milepost markers" to determine how far away neighboring galaxies are. There was a tiny, infinitely dense ball of substance at the beginning. Then everything exploded, creating the atoms, molecules, stars, and galaxies we see today. Long known to scientists, the majority of massive galaxies were created between 5 and 10 billion years ago, and since then, their production rate has been declining.

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Answer:

Friction = 2 N

Explanation:

F = ma

  = .4 * 24.5 = 9.8 N   net force      10 N by stick means Ffriction = 2 N

The frictional force acting on the shuffleboard puck is 6.08 N.

Frictional force is defined as the resistive force that prevents the relative motion between two surfaces that are in contact with each other.

Here,

Horizontal force applied on the shuffleboard puck, F = 10 N

Mass of the shuffleboard puck, m = 400 g = 0.4 kg

Acceleration of the shuffleboard puck, a = 24.5 m/s²

According to Newton's third law,

F - f = ma

where f is the frictional force acting on the shuffleboard puck.

So, the frictional force,

f = F - ma

f = 10 - (0.4 x 9.8)

f = 10 - 3.92

f = 6.08 N

Hence,

The frictional force acting on the shuffleboard puck is 6.08 N.

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The Conditions Young's double slit experiment uses two coherent sources of light placed at a small distance apart. Usually, only a few orders of magnitude greater than the wavelength of light are used. Young's double slit experiment helped in understanding the wave theory of light.

The double-slit experiment demonstrates that light and matter may exhibit both conventionally defined waves and particles; moreover, it demonstrates the inherently probabilistic nature of quantum mechanical events. Thomas Young initially performed this sort of experiment in 1801, as proof of visible light's wave behavior.

The Light was assumed to be made up of either waves or particles at the time. Around a hundred years later, at the dawn of modern physics, it was discovered that light could indeed exhibit wave-like and particle-like behavior.

If the light source is not coherent or monochromatic, the fringes will be blurred and there will be no interference pattern.

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The frequency shift is 188.2 kHz.

The frequency shift, also known as the Doppler shift, can be calculated using the formula Δf/f = v/c, where Δf is the frequency shift, f is the original frequency (21.0 GHz), v is the velocity of the car (68.0 mph), and c is the speed of light.

First, we need to convert the velocity of the car from mph to m/s, which is 30.28 m/s. Then, we can plug in the values and solve for Δf.

Δf/f = v/c
Δf/21.0 GHz = (30.28 m/s)/c
Δf = (21.0 GHz)(30.28 m/s)/c
Δf = 188.2 kHz

This information can be used by the police to determine the speed of the car and potentially issue a speeding ticket.

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The unit of Strain is B. None of the mentioned

The correct answer is B) None of the mentioned.

Strain is a dimensionless quantity and does not have a unit. It is defined as the ratio of the change in length (or deformation) to the original length of an object. Since it is a ratio of two lengths, the units cancel out, resulting in a dimensionless quantity.

Strain is defined as the ratio of change in dimension of a body to the original dimension. E.g. longitudinal strain is defined as the ratio of change in length to the original length.

Since it is a ratio of two quantities having the same dimension, strain is a unitless quantity.

So, the correct answer is B) None of the mentioned

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The Barbie would be moving with speed 27.69 ft/s at the bottom of the path.

Speed is distance travelled by the object per unit time. Due to having no direction and only having magnitude, speed is a scalar quantity With SI unit meter/second.

Mass of the Barbie = 0.23 kg.

Initial height of the Barbie: h= 11 ft 11 inches = ( 11 + 11/12) feet = 11.92 feet.

Acceleration due to gravity: g = 32.17 ft/s²

Hence, the speed of the Barbie at the bottom of the path = √(2gh)

= √( 2 × 32.17 ×11.92) ft/s

= 27.69 ft/s.

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Answer:

2730.304 KJ

Explanation:

 How much heat is required to convert 0.8 kg of ice at  -35°C into steam at 100 C?

Given that:

mass of ice (m) = 0.8 kg = 800 g

Initial temperature (\(T_i\)) = -35°C = 238 K

final temperature (\(T_n\))= 100°C = 373 K

Specific heat of ice (\(S_i\)) = 2.108 J/g.K

Specific heat of water (\(S_w\)) = 4.18 J/g.K

Latent heat of fusion (\(L_f\)) = 334 J/g.

Latent heat of vaporization (\(L_v\)) = 2230 J/g.

\(\Delta T=T_n-T_i=373-238=135K\)

Total heat (Q) required to increase the temperature of ice from the initial temperature of 238K to final temperature of 373 K is given by the equation:

\(Q=m\Delta TS_i+m\Delta TS_w+mL_f+mL_v\\Q=800(135)*2.108+800(135)*4.18+800*334+800*2230\\Q=227664+451440+267200+1784000=2730304J\\Q=2703.304KJ\)

Electromagnetic radiation is a form of energy that travels in waves and includes a wide range of frequencies and energies. Different types of electromagnetic radiation have varying amounts of energy associated with them.

In order of decreasing energy, the types of electromagnetic radiation you provided can be arranged as follows:

So, the correct order from highest to lowest energy is:

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Answer:

The efficiency is just 0.016

Explanation:

The efficiency is given by the useful energy ÷ by the total energy.

1 W is the same that 1 joule per second

If you do the math:

1.6/100=0.016

Answer:Pulley , Wheel and axle , Screw , wedge , Incline

Explanation:

Answer: below .

Explanation:

Pulley , Wheel , axle , Screw , wedge , Incline

HOPE IT HELPS YOU .PLEASE GIVE BRAINLIEST .THANKS .

The sound waves that are produced travel through the air and reach your ears even if you cannot see the source of the sound. Sound is a type of energy that can travel through different mediums, including air, water, and solid objects.

When something produces a sound, it creates vibrations that move through the air and reach our ears. Therefore, even if we cannot see the source of the sound, we can still hear it if the sound waves reach our ears.

You can hear a sound that is produced out of sight around the corner of a building because of sound waves. When a sound is produced, it creates vibrations in the air that form sound waves. These waves travel in all directions, including around obstacles like corners of buildings. When the sound waves reach your ears, you are able to hear the sound even though the source is out of sight.

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An item sitting 25.0 cm in front of the lens generates an image 20.0 cm behind the lens if the focal length of the lens, which is 11.11 cm, is used.

The distance between a lens's center and its focus is known as a convex lens' focal length. The true focus is the point at which the light rays converge in this instance as they travel parallel to the major axis.

The distance from object to a lens, do = 25.0 cm

The distance from the image to the lens, di = 20.0 cm

The focal length of the lens, f

1/f= 1/do + 1/di

1/f= 1/25 + 1/20

f= 11.11 cm.

Hence, the focal length of the lens is 11.11 cm.

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A solenoid 50 cm long is wound with 500 turns of wire. The cross-sectional area of the coil is 2.0cm². The self-inductance of the solenoid will be 12.56 x 10⁻⁵ H.

Given :

The self-inductance is given as,

L = \(\frac{\mu^oN^2A }{l}\)

L =  \(\frac{4\pi * 10^-^7* 500^2 *2 10^-^4}{50 * 10^-^2}\)

L = 4π x 10⁴ x 10⁻⁹

L = 4 x 3.14 x 10⁻⁵

L = 12.56 x 10⁻⁵ H

Hence ,  The self-inductance of the solenoid will be 12.56 x 10⁻⁵ H.

Self inductance is defined as the induction of a voltage in a current-carrying wire when the current in the wire itself is changing. In the case of self-inductance, the magnetic field created by a changing current in the circuit itself induces a voltage in the same circuit.

Therefore, the voltage is self-induced.

The term inductor is used to describe a circuit element possessing the property of inductance and a coil of wire is a very common inductor. In circuit diagrams, a coil or wire is usually used to indicate an inductive component. Taking a closer look at a coil will help understand the reason that a voltage is induced in a wire carrying a changing current.

The alternating current running through the coil creates a magnetic field in and around the coil that is increasing and decreasing as the current changes.

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We can see here that the textures of objects play a significant role in determining the friction produced when two objects are in contact with each other.

Friction is a force that opposes the relative motion or attempted motion between two surfaces in contact. When two objects are in contact and one tries to slide, roll, or move past the other, friction acts in the opposite direction to resist or impede that motion.

Here's how different textures affect friction:

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Answer: 1280 J

Explanation: Work is calculated by multiplying the displacement (8m) by the force (160 N) which will give you 1280 J (joule)

The law of nature that is commonly broken in outer space battle scenes in movies is the absence of sound in the vacuum of space.

In reality, sound requires a medium, such as air or water, to propagate. In the airless environment of space, sound waves cannot travel and be heard as they do on Earth. However, in many movies depictions of space battles, explosions, laser blasts, and other actions are accompanied by sound effects to enhance the viewing experience and create a sense of excitement. While this departure from reality allows for more engaging cinematic experiences, it does not accurately reflect the actual conditions of outer space.

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Answer: It has the skill to nest

sorry if I'm wrong

Answer:

B: A colorful beak

Explanation:

i hope this helped!