each value in a sample has been transformed by multiplying by 3 and then adding 10. if the original sample had a variance of 4, what is the variance of the transformed sample? A 4 B ) 12 C16 D 22 E 36

There are only two times of the year when the Earth's axis is tilted neither toward nor away from the sun, resulting in a equal amount of daylight and darkness at all latitudes. These events are referred to as Equinoxes.The word equinox is derived from two Latin words - aequus (equal) and nox (night). At the equator, the sun is directly overhead at noon on these two equinoxes. How do the climatological temperature patterns follow the four seasons? The temperatures are pretty much the same when comparing early winter to late winter and pretty much the same when comparing early summer to late summer. However, late Fall is much colder than early Fall and late Spring is much warmer than early Spring. Why is that? The reason is linked to the changing of the solar sun angle during each season. In the Fall, the sun angle is always getting lower and in the Spring it is always getting higher. From this it would make sense that late Fall is much colder than early Fall and late Spring is much warmer than early Spring.  In the winter, the sun angle is INCREASING and in the summer the sun angle is DECREASING. This fact causes temperatures to be pretty much the same when comparing early winter to late winter and pretty much the same when comparing early summer to late summer. The cumulative cooling of the ground and ocean is partially offset by an increasing sun angle in the winter and the cumulative warming of the ground and ocean is partially offset by a decreasing sun angle in the summer. This causes the Spring and Fall seasons to seem much quicker in duration than the Summer and Winter seasons.

Answer:

3 moles

Explanation:

Ratio of O2 to CO2 = 2 : 1 = 6 : 3

Answer:

100,000 / 800,000 = 1 / 8    amount of sample after 12 hours

(1/2)^n = 1 / 8      after n half-lives 1/8 of sample will be left

n = 3

(D) is the correct answer - 1/2 half-life = 4 hours

Hey,

Following the second Newton's Law  :

✔ We apply : F = m x a ⇔ m = F/a with F in N, m in kg and a in m/s²

the object therefore has a mass of 8 kg

The direction of the break dancer is always changing hence we can say that the break dancer is accelerating.

The term acceleration means change of velocity with time. It refers to the time taken for the velocity of a body to change in a specified direction. Recall that velocity takes direction into account.

The direction of the break dancer is always changing hence we can say that the break dancer is accelerating since his direction is changing even though the speed is constant.

Learn more about acceleration: https://brainly.com/question/2437624?

To make there in time for the interview, the remaining distance must be traveled at a pace of at least 128 km/h.

the description of rapidity. a change in the position of an item in either direction or speed. How quickly something is going is determined by the distance traveled and the time required to cover that distance. Speed is a scalar quantity since it only possesses a direction and no magnitude.

In contrast to velocity, which describes the direction and speed of an object's motion, speed is the rate of motion along a path. Kinetic energy is a linear, whereas speed is a scalar integer.

Total distance = 300 Km

Time = 11.15Am - 8 Am

Time = 3hour 15 minutes

Time = 3 + 15/60  = 3.25 hour

Speed for 100 km = 100km/h

Speed for 40 Km = 40km/hr

Total Km covered = 100 + 40 = 140.

Total time taken = 1 hr + 1hr = 2hr

Total Distance Left = 300 - 140 = 160 Km

Total Time Left = 3.25 - 2 = 1.25h

Speed = Distance / Time = 160/1.25 = 128km/h

To know more about speed visit:

https://brainly.com/question/9816099

#SPJ1

Answer:

the correct answer is B

Explanation:

To solve the system they must have the same amount of unknowns as equations,

a) If the system does not have friction, we must write the x-axis equation for each body, therefore we need to write N equations

b) if the system has friction, two equations are needed for each particle

therefore the correct answer is B

sunlight contains ultraviolet rays only best describes the forms of electromagnetic waves produced by sunlight. Hence option A is correct.

A fraction of the electromagnetic energy emitted by the sun, including infrared, visible, and ultraviolet light, is known as sunlight. When the Sun is above the horizon, sunlight on Earth is seen as daylight after being dispersed and filtered by the atmosphere. Sunshine, a mix of brilliant light and radiant heat, is what we feel when direct solar radiation is not obstruct by clouds. Sunlight is diffused when it is obstructed by clouds or reflected off of other surfaces. According to sources, the average solar radiation received by each square metre on Earth during a 24-hour period ranges from 164 to 340 watts[1]; according to NASA, this amount represents roughly 25% of the planet's average total solar irradiance.

Sunlight's UV radiation has both favorable and unfavorable impacts on health.

To know more about Sunlight ;

https://brainly.com/question/1603783

#SPJ2.

Temperature increase by global warming has given rise to new types of blights and pests, causing damages to crops. Especially, damages to apples, peaches, grapes, and soybeans, by brown grasshoppers are reported to have been increasing.

Basically for rice, the cultivation period is the basic condition for planning its production, which is decided by the climate conditions and the rice variety. Among several agricultural climate conditions,

temperature is the critical factor in deciding the rice cultivation period

Answer:

An interaction between electricity and magnetism produces an electromagnet, while a permanent magnet induces the paper clip's magnetic field.

Explanation:

A p e x :)

Answer:

b.

Explanation: I do not know much about this but the answer that i think it is was b.

A rock turns a reddish color when exposed to air and water. this description is evidence of chemical weathering

Chemical weathering is demonstrated by the fact that "a rock turns a reddish colour when exposed to air and water." The breakdown of rocks occurs through a process known as chemical weathering, which involves chemical interactions with elements including water, oxygen, and acids. The iron in the rock may have oxidised, which is when iron in the rock combines with oxygen and water to generate iron oxide (rust), giving the material its reddish hue. The physical weathering produced by wind-borne particles is described in Option A, the physical weathering induced by freeze-thaw cycles is described in Option B, and the physical weathering caused by gravity and the impact of the rock striking the ground is described in Option D.

Hence option C is correct.

TO know more about Rock :

https://brainly.com/question/29898401

#SPJ2.

The force ratio fp/fe is equal to 1. This is because the unsigned charges of the proton and the electron are equal, and they experience the same electric field. The magnitude of the electric force experienced by a charged particle in an electric field at a position is equal to the product of the electric field and the unsigned charge of the particle.

F = qE

where

F is the force

q is the charge

E is the electric field

The proton and the electron have the same charge, so the magnitude of the force they experience is equal. The electric field is also the same, so the force ratio fp/fe is equal to 1.

fp/fe = q_p E / q_e E = 1

In other words, the force on the proton is equal to the force on the electron.

Learn more about centripetal force and circular motion here:

https://brainly.com/question/32457944

#SPJ11

An action reaction pair of forces exists between : ( A ) The aerialist arms and legs

Action-reaction pair of force comprises of the force that acts on the object as a action force and the force experiened by the object due to newton third law of motion as the reaction force. Therefore in the diagram an action reaction pair of forces can be experienced between the aerialist arms and legs

Hence we can conclude that An action reaction pair of forces exists between : ( A ) The aerialist arms and legs.

Learn more about Action-reaction pair of forces :  https://brainly.com/question/354208

#SPJ2

The correct statement about the forces acting on a car moving at a constant speed along a straight line is: A. The net force acting on the car from all directions is zero.

The correct answer is A.

The net force acting on the car from all directions is zero. This is because the car is moving at a constant speed, which means that the forces acting on it must be balanced. If there was an unbalanced force, the car's speed would change. Therefore, the net force acting on the car is zero.

When a car is moving at a constant speed, it is not accelerating. According to Newton's first law of motion, an object in motion will stay in motion at a constant velocity unless acted upon by an unbalanced force. In this case, since the car is moving at a constant speed, the net force acting on it is zero. This means that the forces acting on the car, such as friction and air resistance, are balanced and do not cause any change in the car's velocity.

To know more about force visit:

https://brainly.com/question/13191643

#SPJ11

Answer: Hot air is transferred through heat being radiated from a thermal burner.

The oven absorbs air from the environment and passes it through a thermal resistance (thermal burner) to heat it and then this hot air is the one that cooks the food.

Answer:

he is wronggg

Explanation:

To explain the tangent plane to the surface, `z = 53 − x² − 2y²` at the point `(3, 2, 6)`, let us first determine the partial derivatives of `z` with respect to `x` and `y`.

Partial derivative of `z` with respect to `x`, `∂z/∂x = -2x`Partial derivative of `z` with respect to `y`, `∂z/∂y = -4y`Now, let's find the gradient vector `grad z` at `(3, 2, 6)` and the value of `z` at `(3, 2)`.gradient vector `grad z = (-2x, -4y, 1)`gradient vector `grad z = (-6, -8, 1)` at `(3, 2, 6)`.Value of `z` at `(3, 2)` is given by `z = 53 - 3² - 2(2)² = 39`.

Therefore, the equation of the tangent plane to the surface `

z = 53 − x² − 2y²` at `(3, 2, 6)` is:

`z - 6 = -6(x - 3) - 8(y - 2)`

which can be written as:`6x + 8y + z = 50`Thus, the equation of the tangent plane to the surface `z = 53 − x² − 2y²` at the point `(3, 2, 6)` is `6x + 8y + z = 50`.

To know more about Partial derivative visit:-

https://brainly.com/question/32387059

#SPJ11

a) Force is: :F = 4849.7 + FB... b) force support B must exert on the beam in order for it to remain at rest is 7009.7 N c) At what distance x, in meters, from support A is the worker sitting now is 10.5 m. for the force.

The given figure and problem is shown below:Here,L = 14mmb = 405 kgmw = 79 kgFA = 2160 N

(a) We need to calculate the expression for the force support B must exert on the beam in order for it to remain at rest, in terms of defined quantities, x, and g.Force, F on a body of mass, m, on the earth due to the gravitational force of attraction, g is given by:F = m × gHere, for the rigid steel beam,F = mb × g

Thus, the force on the beam is given by:mg = 405 × 9.8 = 3970.5

Now, we consider the forces acting on the beam when the worker of mass, mw sits at a distance, x from support A. The forces acting on the beam are as follows:mg force acting downwards due to gravity mwg force acting downwards due to gravityF force acting upwards due to support AFB force acting upwards due to support BFrom the given problem, we know that the beam is at rest.

Therefore, the sum of the forces acting in the vertical direction will be zero. So we have:mg + mwg + F + FB = 0Now substituting the value of mg and multiplying both sides by -1, we get:FB = -mg - mwg - FFB = -(mb + mw)g - FFB = -4849.7 - FF = 4849.7 + FB

Thus, the force support B must exert on the beam in order for it to remain at rest, in terms of defined quantities, x, and g is given by:F = 4849.7 + FB...[Ans]

(b) The force, in newtons, that support B must exert on the beam in order for it to remain at rest when the worker sits at a distance x = 3.5 m from support A is given by:F = 4849.7 + FBThe force acting on the beam due to the gravitational force of attraction, g is given by:mg = 405 × 9.8 = 3970.5 Nmwg = 79 × 9.8 = 774.2 N

Now substituting the value of mg and mw and F = FA = 2160 N, we get:FB = -4849.7 - FFB = -4849.7 - FAFB = -4849.7 - 2160FB = -7009.7 NThus, the force support B must exert on the beam in order for it to remain at rest is 7009.7 N...[Ans]

(c) Let the distance from support A be y (as shown in the figure).Then, x + y = LSo, y = L - x

Substituting the value of L = 14m and x = 3.5m, we get:y = 14 - 3.5 = 10.5 m

Therefore, at what distance x, in meters, from support A is the worker sitting now is 10.5 m...[Ans]

Learn more about force here:

https://brainly.com/question/30507236

#SPJ11

The final velocity of skater 1 is 3.7 m/s to the right. The right option is O A. 3.7 m/s to the right.

Velocity can be defined as the ratio of the displacement and time of a body.

To calculate the final velocity of Skater 1 we use the formula below.

Formula:

Where:

make v the subject of the equation.

Note: Let left direction represent negative and right direction represent positive.

From the question,

Given:

Substitute these values into equation 2

Hence, the final velocity of skater 1 is 3.7 m/s to the right. The right option is O A. 3.7 m/s to the right.

Learn more about velocity here: https://brainly.com/question/25749514

If the resistance remains constant and the voltage doubles, the power will increase by a factor of 4 (option E)

The following data were obtained from the question:

P = V² / R

Resistance is constant, we have

V₁² / P₁ = V₂² / P₂

V² / P = (2V)² / P₂

V² / P = 4V² / P₂

Cross multiply

V² × P₂ = P × 4V²

Divide both side by V²

P₂ = P × 4V² / V²

P₂ = P × 4

From the above, we can conclude that the power will increase by a factor of 4 (option E)

Learn more about electrical power:

https://brainly.com/question/23850602

#SPJ1

The current in the circuit is 0.1875 amperes or 187.5 milliamperes.

To calculate the current in this circuit, we can use Ohm's Law, which states that the current (I) flowing through a resistor is equal to the voltage (V) across the resistor divided by its resistance (R). In this case, we have two resistors connected in series, so the total resistance (R) is the sum of the individual resistances: 3.0 + 5.0 = 8.0 ohms.
Next, we can use the voltage of the battery (V) as our input, which is 1.5 V. Plugging in the values,

we get: I =\frac{ V}{R }

I= \frac{1.5}{8.0}

I = 0.1875 A (or 187.5 mA).

Therefore, the current in the circuit is 0.1875 amperes or 187.5 milliamperes.
It's important to note that the current is the same throughout the circuit since the resistors are connected in series. Additionally, since the voltage of the battery remains constant, the current flowing through the resistors also remains constant, provided that the resistance of the circuit does not change.

learn more about current Refer: https://brainly.com/question/31534741

#SPJ11

(a). The velocity of the center of mass is (4.32 î + 6.43 ĵ) m/s.

(b). The total momentum of the system is:

\(p_{total\) = \(p_1 + p_2\)  = (4.10 î − 6.00 ĵ) kg · m/s + (3.22 î + 17.62 ĵ) kg · m/s = (7.32 î + 11.62 ĵ) kg · m/s

(a) The velocity of the center of mass can be found using the formula:

\(v_cm = (m_1v_1 + m_2v_2) / (m_1 + m_2)\)

where\(m_1\) and \(v_1\) are the mass and velocity of the first particle, and \(m_2\) and \(v_2\) are the mass and velocity of the second particle. Substituting the given values, we get:

\(v_{cm\) = (1.96 kg)(2.09 î − 3.05 ĵ) m/s + (2.98 kg)(1.08 î + 5.91 ĵ) m/s / (1.96 kg + 2.98 kg)

\(v_{cm\) = (4.32 î + 6.43 ĵ) m/s

(b) The total momentum of the system can be found by adding the momentum of each particle. The momentum of a particle is given by:

p = mv

where m is the mass of the particle and v is its velocity. Substituting the given values, we get:

\(p_1\) = (1.96 kg)(2.09 î − 3.05 ĵ) m/s = (4.10 î − 6.00 ĵ) kg · m/s

\(p_2\) = (2.98 kg)(1.08 î + 5.91 ĵ) m/s = (3.22 î + 17.62 ĵ) kg · m/s

To know more about velocity refer here

https://brainly.com/question/30559316#

#SPJ11

Answer:

I think is the The truck because it has more mass

Answer:

Dry lubricants or solid lubricants are materials that, despite being in the solid phase, are able to reduce friction between two surfaces sliding against each other without the need for a liquid oil medium.

Explanation:

Answer:

Your answer is graphite :) Have a nice day

Explanation:

The new electrostatic force will be 384 units.  

The electrostatic force of attraction between two charges \(q_{1} \\\)(charge of object 1)  and \(q_{2}\)(charge of object 2) separated by a distance d is given by

\(F = \frac{q_{1} q_{2}}{4\pi E_{0} d^{2} } \\\)

\(E_{0} = 8.854 * 10^{-12} C^{2} N^{-1} m^{-1}\) is the permittivity of free space.

Initially, we have,

\(\frac{q_{1} q_{2}}{4\pi E_{0} d^{2} } =F_{1} = 8 units\)  

Now, if the charge of object 1 is multiplied by 1, the charge of object 2 is multiplied by 3, and the distance separating objects 1 and 2 is divided by 4, we have, \(q_{1} =q_{1}, q_{2} =3q_{2} , d=\frac{d}{4}\).

The new electrostatic force will be,

\(F_{2} = \frac{q_{1} 3q_{2}}{4\pi E_{0} (\frac{d}{4} )^{2} } \\\\\) units.

We have, \(F_{1} = 8 units= \frac{q_{1} q_{2}}{4\pi E_{0} d^{2} } \\\)

Hence,

\(F_{2} =\frac{8*3}{(\frac{1}{4}) ^{2} } units= 384 units.\)

Hence, the new electrostatic force will be 384 units.

To read a similar problem on electrostatic forces visithttps://brainly.com/question/16049250

Answer:

b

Explanation:

Answer:

8. 9×10³N/m

Explanation:

k=2U /x²

= 2(25J) / 0.075m²

=8. 9×10³N/m