The area where a motorist cannot see behind his/her vehicle (on both sides) through the mirrors?

if you were to draw multiple random samples of size 45 from this population, the distribution of the sample means would be normal with a mean of 148.8 and a standard deviation of 14.2.

If you intend to draw a random sample of size n=45 from a population of values with a normal distribution where μ=148.8 and σ=95.3, you can use the central limit theorem to approximate the distribution of the sample mean. The central limit theorem states that as the sample size increases, the distribution of the sample mean becomes more normal regardless of the distribution of the population.
In this case, since the population has a normal distribution, we can assume that the distribution of the sample mean will also be normal. The mean of the sample mean will be the same as the population mean, which is 148.8. The standard deviation of the sample mean (also called the standard error) will be the population standard deviation divided by the square root of the sample size, which is 95.3/√45=14.2.

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If the electron experiences a magnetic deflection in the -y direction, then the magnetic field must have a component along the -z-axis

What is a magnetic field?

The magnetic field is the area in which a magnet produces its magnetic effects. We use the magnetic field as a tool to describe how well the magnetic force is distributed in the vicinity inside and something magnetic in nature. Magnetism is created by moving electric charges. The smallest units of matter are known as atoms. Each atom contains charged particles called electrons. The nucleus, or core, of an atom is made up of electrons that spin like tops.

Force is along - y direction

velocity is along + x direction

force on electron is given by formula

\(\vec{F} = q * (\vec{v}X\vec{B})- \hat{j} = -e * (\hat{i}X\vec{B})\)

now to satisfy the above equation magnetic field must be along "-Z axis"

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Answer:

One of the harder ideas to grasp in fusion is that nuclei, which, because of their electric charge, strongly repel at long range

(compared to the size of a nucleus), can strongly attract at short range. This activity allows students to explore a similar situation in

which

the magnetic interaction provides the repulsion (similar to the electric interaction within

the nucleus) and Velcro provides an attractive force at short range (similar to the nuclear

strong interaction).

Explanation:

Brainliest Answer pls

Answer:

here's the answer to your question hope it helps you

Explanation:

time=distance/speed

=7m/5ms

=1.4s

Answer:

answer = 23 uF

Based on the calculations of present worth costs, equipment B should be recommended for purchase due to its lower overall cost compared to equipment A.

Based on the given information, the equipment with the lower present worth cost should be recommended for purchase.

In order to determine the more cost-effective option, we need to calculate the present worth cost for each equipment. The present worth cost takes into account the initial investment and the yearly operating costs over the equipment's lifetime, discounted at the interest rate of 7.15% per year.

For equipment A:

Present Worth Cost (A) = Installed Cost (A) + Operating Cost (A) / (1 + Interest Rate)^Years

For equipment B:

Present Worth Cost (B) = Installed Cost (B) + Operating Cost (B) / (1 + Interest Rate)^Years

By comparing the present worth costs of both options, the equipment with the lower value should be recommended for purchase.

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(a) To apply separation of variables, we assume T(x,t) = M(x)N(t), and substitute it into the heat conduction equation. This leads to two separate equations: d²M/dx² = -λ²M and dN/dt = -λ²/2N.

(b) For N(t), the ODE dN/dt = -λ²/2N has the general solution N(t) = \(Ce^{-\lambda^2t/2}\), where C is an arbitrary constant.

(c)  From the general expressions of M(x) and N(t), we combine them to define T(x,t) = (Acos(λx) + Bsin(λx). Hence, T(x,t) = \(5sin(4\pi x)e^(\lambda^2t/2)\).

(d) The arbitrary constant is determined as λ² = (4π)², which gives us λ = 4π. Thus, the final solution is T(x,t) = \(5sin(4\pi x)e^{-32\pi^2t}\).

a. To apply separation of variables, we assume T(x,t) = M(x)N(t), and substitute it into the heat conduction equation.

By differentiating twice with respect to x and once with respect to t, we obtain: ∂²M/∂x²N + 1/2M∂N/∂t = 0.

Since the left side depends on x and the right side depends on t, both sides must be equal to a constant, which we denote as -λ².

This leads to two separate equations:

d²M/dx² = -λ²M and dN/dt = -λ²/2N.

b. By solving the ODE for M(x), d²M/dx² = -λ²M,

we find that M(x) has the general form M(x) = Acos(λx) + Bsin(λx), where A and B are constants determined by the boundary conditions T(0,t) = T(3,t) = 0.

For N(t), the ODE dN/dt = -λ²/2N has the general solution:

N(t) = \(Ce^{-\lambda^2t/2}\), where C is an arbitrary constant.

c. From the general expressions of M(x) and N(t), we combine them to define:

T(x,t) = (Acos(λx) + Bsin(λx))\(Ce^{-\lambda^2t/2}\).

Simplifying the arbitrary constant C, we can rewrite it as

C = 5sin(4πx)/M(x) at t = 0,

which corresponds to the initial condition

T(x,0) = 5sin(4πx).

Hence, T(x,t) = \(5sin(4\pi x)e^{\lambda^2t/2}\).

d. Applying the boundary conditions T(0,t) = T(3,t) = 0,

we find that sin(λx) should be zero at x = 0 and x = 3.

This gives us λ = nπ/3, where n is an integer.

Substituting this value of λ into the expression for T(x,t), we obtain

T(x,t) = \(5sin(4\pi x)e^{-32\pi^2t}\),

which matches the given solution

T(x,t) = \(5sin(4\pi x)e^{-32\pi^2t}\).

Therefore, the arbitrary constant is determined as λ² = (4π)², which gives us λ = 4π.

Thus, the final solution is T(x,t) = \(5sin(4\pi x)e^{-32\pi^2t}\).

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Answer:

the answer is B.

Explanation:

The ball that is thrown straight up has more kinetic energy and more speed than the ball that is thrown straight down. Both balls have the same kinetic energy and speed.

The kinetic energy of a body can be determined as the energy of a moving physical system because of its motion. Work has to be done on an object to change its kinetic energy.

The kinetic energy of the moving system can be expressed as K.E. = ½mv²  where ‘m’ is mass while ‘v’ is the velocity of the object.

The potential Energy of the physical system can be described as the energy stored due to its position. The mathematical formula for the calculation of the potential energy can be expressed in the form of P.E = m×g×h where ‘g’ is the gravitational acceleration, ‘m’ is the mass and ‘h’ is the height in meters

When two identical balls are thrown from a cliff, each with the same speed. One ball is thrown straight up, and the other ball is straight down. Both balls will have the same kinetic energy as well as speed.

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Spongebob is pulling the wagon with a force of 57 N. It's important to note that this calculation assumes there is no friction or air resistance acting on the wagon

According to Newton's Second Law, force (F) is equal to the product of mass (m) and acceleration (a), or F=ma. In this problem, the mass of the wagon and snail combined is given as 60 kg, and the acceleration of the wagon is 0.95 m/\(s^2\). To find the force that Spongebob is pulling with, we can use the formula F=ma:

F = 60 kg x 0.95 m/\(s^2\)

F = 57 N

Therefore, Spongebob is pulling the wagon with a force of 57 N. It's important to note that this calculation assumes there is no friction or air resistance acting on the wagon, as those forces would make the acceleration different from 0.95 m/\(s^2\) and would need to be taken into account in the calculation.

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Answer: Any particle, whether an atom, molecule or ion, that contains less electrons than protons is said to be positively charged. Conversely, any particle that contains more electrons than protons is said to be negatively charged.

Explanation: If there are more electrons than protons in a piece of matter, it will have a negative charge, if there are fewer it will have a positive charge, and if there are equal numbers it will be neutral.

Given :

An ant is crawling along a yardstick that is pointed with the 0-inch mark to the east and the 36-inch mark to the west.

It starts at the 14-inch mark, crawls to the 20-inch mark, then moves to the 16-inch mark.

To Find :

The total distance the ant traveled.

Solution :

Total distance travelled by ant = (distance between 14 and 20 inch mark) +

                                                      (distance between 20 and 16 inch mark)

Total distance = (20-14 ) + ( 20-16) = 6 + 4 = 10 inch.

Therefore, total distance the ant traveled is 10 inch.

Hence, this is the required solution.

Answer: 1.0

Explanation:

not sure why but that is the correct answer

Answer:

1.0

Explanation:

Correct answer on Khan Academy

Answer:a. 24 kg m/s

b.  3/5s

Explanation:

a.impulse is the change in momentum so at first the momentum is zero because the ball was at rest and the final momentum is 1.2kg*20m/s=24 kg m/s

so the impulse would be (24-0) kg m/s=24 kg m/s

b. so the impulse equation is impulse is force *delts time

so 24 kg m/s=40N*t

t=24 kg m/s /40N=3/5 s

Just one electrons fill the outer shell of the smallest four elements( H, He, Li, & Be).

A chemical element is a described as chemical substance that cannot be broken down into other substances.

The elements Hydrogen (H), lithium (Li), and sodium (Na), are  group 1 elements and are called  inert gases or noble gases because of their non-reactivity, hence have just one electron in their outermost shells.

Elements has properties and the properties include, but are not limited to, conductivity, magnetism, melting point, boiling point, color, state of matter, and others.

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Answer:

1/3 power

Explanation:

I'm just a smart guy

Any amount of particles with 55 protons and a different number of neutrons than 82 would represent an isotope of Cesium-137.

An isotope of Cesium-137 would have the same number of protons (55) as regular Cesium-137, but a different number of neutrons. Therefore, the amount of particles that represents an isotope of Cesium-137 would be the one with the same number of protons and a different number of neutrons. The atomic mass of regular Cesium-137 is 137, which means it has 82 neutrons (137 - 55). Therefore, any amount of particles with 55 protons and a different number of neutrons than 82 would represent an isotope of Cesium-137. In summary, Isotopes are elements with the same number of protons but different numbers of neutrons.

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An isotope of Cesium-137 contains 55 protons and 82 neutrons, resulting in a total of 137 particles in its nucleus. This specific isotope is represented by the symbol Cs-137.

An isotope of Cesium-137 is any sample that contains the same number of particles as a pure sample of Cesium-137, which has 55 protons and 82 neutrons. Therefore, any sample with 137 particles that includes 55 protons and 82 neutrons would be an isotope of Cesium-137.It is a radioactive isotope of caesium that is formed as one of the more common fission products by the nuclear fission of uranium-235 and other fissionable isotopes in nuclear reactors and nuclear weapons.  

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Answer:

Sarah's classmate is incorrect. The photo shows the slight effect of gravity on the hillside but it is not a process

associated with mass wasting.

Explanation:

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The greater efficiency achieved with the curved blades of a Pelton wheel is due to the fact that the curved shape of the blades allows them to more effectively capture and use the energy of the water jet.

In a Pelton wheel, water is jetted through a nozzle onto the blades of a turbine, which rotates and converts the energy of the water jet into mechanical work. The shape of the blades plays a significant role in the efficiency of the turbine. Curved blades are more efficient than straight blades because they can capture and use more of the kinetic energy of the water jet.

The curved shape of the blades creates a more efficient flow of water over the surface of the blade, which allows the blade to extract more energy from the water jet. This results in a higher torque and power output from the turbine, leading to a more efficient conversion of water energy into mechanical work.

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The wavelength of the light beam having a frequency of 6 × 1017 hz is 0.05 nm.

To calculate the wavelength of a light beam, we can use the formula:

λ = c/f

Where λ is the wavelength, c is the speed of light and f is the frequency of the light.

The speed of light is approximately 3 x 10^8 m/s, we can use this value to find the wavelength.

λ = c/f

λ = (3 x 10^8 m/s) / (6 x 10^17 Hz)

λ = 0.05 nm

So the wavelength of the light beam is 0.05 nm.

It's important to mention that the wavelength is inversely proportional to the frequency, meaning if the frequency is high the wavelength is short and if the frequency is low the wavelength is long.

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Answer:

125.5J

Explanation:

Given parameters:

Mass of the bowling ball  = 6.1kg

Height of lifting  = 2.1m

Unknown:

Increase in the ball energy  = ?

Solution:

The ball has changed position by moving it from one point to another. So, it has acquired more potential energy.

 Potential energy  = mgh

     m is the mass

     g is the gravity  

     h is the height

Now insert the given parameters and solve;

       Potential energy  = 6.1 x 9.8 x 2.1  = 125.5J

Answer:

b.

Explanation:

Mitosis is important for growth and development  of living organisms.

The major importance of mitosis is growth and development. The correct option is B.

Mitosis is the method by which a cell replicates as well as then segregates its chromosomes, and generates two identical nuclei in order to divide.

Mitosis is basically followed by the equal division of the cell's contents into two daughter cells with identical genomes.

Mitosis occurs in the following stages:

One cell divides once during mitosis to form two identical cells. Mitosis is primarily responsible for cell growth and replacement.

Thus, the correct option is B.

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Answer:

Reduce friction

The pressure of the gas is constant. The mass of piston, m = 8 kg The area of piston, A = 5 cm². Increase in temperature, ∆T = (300 - 20)°C = 280°C Moles of the gas, n = 0.2 mol Universal gas constant, R = 8.31 J mol-¹ K-¹Now, we need to calculate the work done by the gas.

We can use the following formula to calculate the work done by the gas:Work done by the gas, W = -P∆Vwhere P = Pressure and ∆V = Change in volume We can calculate the change in volume using the formula,∆V = (mgh)/AWhere m = mass of piston, g = Acceleration due to gravity, h = Height moved by the piston We know that the height moved by the piston, h = ∆l, where ∆l is the change in length.

We can calculate the change in length using the formula,∆l = αl₀∆T Where α is the coefficient of linear expansion, l₀ is the initial length and ∆T is the increase in temperature Now, we can write,∆l = αl₀∆T= (12 x 10⁻⁶ / °C) x 10 x 280= 0.0336 m= 3.36 cmNow, we can calculate the change in volume,∆V = (mgh)/A= (8 x 9.81 x 0.0336)/5 x 10⁻⁴= 2125.92 cm³= 2.12592 x 10⁻³ m³Now, we can calculate the work done by the gas,W = -P∆V= - nRT∆V= - (0.2 mol) x (8.31 J mol⁻¹ K⁻¹) x (300 K) x (2.12592 x 10⁻³ m³)= -10.51 J Therefore, the work done by the gas as the temperature of 0.2 mol of the gas is raised from 20°C to 300°C is -10.51 J.

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The pulley system to the right will be in static equilibrium at an unknown angle of 90 degrees.

An object must satisfy two requirements of equilibrium in order to maintain static equilibrium. First, there must be no net force acting on the item. Second, there must be no net torque pulling on the object.

The 80 N weight is fastened to a freely rotating pulley in this setup.

As a result, the cable's tension is also 80 N.

The tensions' x components must be balanced against one another:

T1x = T2x

Since T1x = T1 cos(θ) and T2x = 0 (because the cable attached to the wall is vertical), we have:

T1 cos(θ) = 0

Therefore, cos(θ) = 0, which means that θ = 90 degrees.

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Explanation:

the net displacement of an object is

X-coordinate is

16.

Y-coordinate is

21-26=-5.

The magnitude of displacement is

d=√(〖16〗^2+(-5)^2 )=17 blocks.

The direction is

θ=tan^(-1)⁡〖5/16〗=17° east of south.

therefore, I think it helps you.

Answer: Frictional force is when it happens on purpose and normal force is when it happens normal and you are not trying to make it happen on purpose.

Explanation: friction happens on purpose and sometimes you can't control friction but friction is an important thing.

Answer:

Explanation:

The answer is [C]

Answer:

The most common products include aerosols, anti-freeze, asbestos, fertilizers, motor oil, paint supplies, photo chemicals, poisons, and solvents, cleaning supplies.

Explanation:

Use homemade cleaners

You can find local retailers to take rechargeable batteries from laptop computers, cordless power tools, cellular and cordless phones, and camcorders at the Rechargeable Battery Recycling Corporation’s website