when mars cooled off it lost its dynamo effect and therefore lost its group of answer choices thermal energy electric field magnetic field axial tilt rapid rotation rate

Answer:

i think it is C means charlie

Explanation:

I hope this really can help you...

well done friend...

None of the options listed is a negative externality. A negative externality is an unintended consequence of an economic activity that affects a third party who is not directly involved in the activity.

If I were to choose: Businesses would not necessarily increase hiring rates.

This could be considered a negative externality because the grant funding is intended to fund job training in order to increase employment opportunities, but if businesses do not increase their hiring rates despite having a pool of trained workers, then the intended benefit of the grant may not be fully realized. This could result in a loss of resources and a missed opportunity to address unemployment in the community.

Answer:

\(5,480\:\text{N}\)

Explanation:

The formula for work is given by \(W=F\Delta x\), where \(F\) is the force applied over a distance of \(\Delta x\).

Plugging in given values, we get:

\(16,700=F\cdot 3.05,\\F=\frac{16,700}{3.05},\\F\approx \boxed{5,480\:\text{N}}\)(three significant figures).

Answer:

See below

Explanation:

from 10 m/s to 20 m/s  

         average is   (10 + 20 )/2 = 15 m/s average

15 m/s  * 60 sec = 900 meters

Here is a longer way to find out how fa it travelled

  a = acceleration = change in velocity/ change in time

                             =   10 m/s / 60 sec = 1/6 m / s^2

xf = xo + vo t + 1/2 a t^2

   = 0   + 10 (60) + 1/2 ( 1/6)(60)^2

   =            600    + 1/12 (3600) = 900 meters

Answer:

For H2O, there is one atom of oxygen and two atoms of hydrogen. A molecule can be made of only one type of atom. In its stable molecular form, oxygen exists as two atoms and is written O2. to distinguish it from an atom of oxygen O, or ozone, a molecule of three oxygen atoms, O3.

Explanation:

The magnitude of the force acting between the two charges is 9 x 10⁶ Newtons.

Given,

Charge = 1C

Distance = 1 km

The magnitude of the force between two charges can be calculated using Coulomb's law. This law states that the force between two point charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

\(\rm F = \frac{k \times |q_1 \times q_2|)}{r^2}\)

Where:

F is the magnitude of the force

k is the Coulomb's constant

q₁ and q₂ are the charges

r is the distance between the charges (1 km = 1000 m)

Plugging in the values:

\(F = \frac{9 \times 10^9 \times 1 \times 1}{1000}\\\)

F = 9 × 10⁶

Therefore, the magnitude of the force acting between the two charges is 9 x 10⁶ Newtons.

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Answer:

Speed and velocity are both measured using the same units.

Explanation:Speed and velocity are both measured using the same units. The SI unit of distance and displacement is the meter. The SI unit of time is the second. The SI unit of speed and velocity is the ratio of two — the meter per second .

Answer: time & displacement

Explanation:

B. Surface. The term "surface" describes the element that surrounds form. In the context of design and visual arts, form refers to the three-dimensional shape or structure of an object.

It has volume, mass, and occupies space. The surface of an object is the outermost layer or boundary that encloses the form.

While all the options listed are relevant elements in design and visual arts, the term "surface" specifically relates to the outer covering or boundary of an object. It defines the texture, color, pattern, and other visual or tactile characteristics of the object's outer layer.

A. Space refers to the area or volume within or around objects.

C. Pattern relates to the repetition or arrangement of visual elements.

D. Shape refers to the two-dimensional outline or contour of an object.

Therefore, the most appropriate answer is B. Surface.

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Answer:

the answer is 27

Explanation:

1/2mv^2 = KE

if mass is 3, and velocity is 3 (3^2 = 9)

then KE increases by a factor of 27

The country that traditionally rewarded blood donations with a pint of beer is the United Kingdom (UK).

In the past, the United Kingdom had a tradition of offering blood donors a pint of beer as a token of gratitude for their donation. This practice was meant to encourage more people to donate blood and acknowledge their contribution to society.

However, this tradition is no longer common, as it has been replaced with more health-conscious incentives such as refreshments, snacks, and recognition items. The blood donation process in the UK is now regulated by the National Health Service (NHS) Blood and Transplant, which emphasizes the importance of a healthy lifestyle and responsible alcohol consumption for the blood donors.

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the answer for 0.429m to mm is 429

Answer:

0.429m=429 mm

Explanation:

Since there are 1,000 millimeters per meter, you need to multiply by 1,000 to convert from meters to millimeters.

The acceleration of the string is 4.3 m/s2.

We regard the positive direction for the vertical motion of mass m1 to be downward and the positive direction for the motion of mass m2 on the incline to be to the right and parallel to the incline.

There are only two ways to accelerate: changing your speed or changing your direction, or changing both. This is because velocity is both a speed and a direction.

Changing the speed at which an object is travelling is what acceleration is all about. A substance is not accelerating if its velocity is not changing. The information on the right depicts an object that is speeding as it moves northward.

Therefore, The acceleration of the string is 4.3 m/s2.

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.

The vectors addition  allows finding that the answer for the addition of a series of vectors by vector and analytical methods is

Vectors are magnitudes that have modulus and direction, so the addition must be done with vector algebra.

There are graphical and analytical methods to perform the vectors addition

We decompose the vectors in the coordinate system that we see as the adjoint.

Vector A

             \(A_y\) = 60 j ^ mm

            Aₓ = 0  

Vector B

             Bₓ = -30 i ^ mm

            \(B_y\) = 0

Vector C

Module   C = 40 mm

Angle      θ = 150º

let's use trigonometry

            cos 150 = \(\frac{C_x}{C}\)

            sin 150 = \(\frac{C_y}{C}\)

            Cₓ = C cos 150

            \(C_y\) = C sin 150

            Cₓ = 40 cos 150 = -34.64 mm

            \(C_y\) = 40 without 150 = 20 mm

Vector D

 Module D = 50 mm

 Angle   θ = 240º

           cos 240 = \(\frac{D_x}{D}\)

           sin 240 = \(\frac{D_y}{D}\)

           Dₓ = D cos 240

           \(D_y\) = D sin 240

           Dₓ = 50 cos 240 = -25 mm

           \(D_y\) = 50 without 240 = -43.30 mm

We perform the sum of each component

x-axis

            Rₓ = Aₓ + Bₓ + Cₓ + Dₓ

            Rₓ = 0 -30 -34.64 -25

            Rₓ = -89.64 mm

y-axis

           \(R_y = A_y + B_y + C_y + D_y\)

          \(R_y\) = 60 + 0 + 20 -43.30

          \(R_y\) = 36.7 mm

We construct the resulting vector

For the module we use the Pythagoras' theorem

           R = \(\sqrt{R_x^2 +R_y^2}\)

           R = \(\sqrt{89.64^2 + 36.7^2}\)

           R = 96.86 mm

For the angle we use trigonometry

           tab θ’= \(\frac{R_y}{R_x}\)

           θ'= tan⁻¹ \(\frac{R_y}{R_x}\)

           θ’= tan⁻¹ \(\frac{36.7}{89.64}\)

           θ ’= 22.26º

Since the x component is negative, the angle is in the second quadrant

To measure from the positive side of the x axis

            θ = 180 - θ '

            θ = 180 -22.26

            θ = 157.26º

In conclusion using the vectors addition we can find that the answer for the sum of a series of vectors by vector and analytical methods is

      R = 96.86 mm          

       θ = 157.26º

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Answer:

The amplitude is a measure of its change in a single period (such as time or spatial period)

what is amplitude?

A periodic variable's amplitude is a measure of its change across a single period, such as time or space. Amplitude is defined in a variety of ways, but they're all based on the size of the disparities between the variable's extreme values. The amplitude of a periodic function is sometimes referred to as the phase in older writings texts.

Answer:

The hyperactivity of these electrons give magnets the ability to attract and repel

If the oscillation amplitude is 0.22m, from a 0.29kg harmonic oscillator which has a total of mechanical energy 3.6j, the oscillation frequency is 4.141Hz.

It is a number of oscillations in the one-time unit, says per second. For example, a pendulum that takes 0.5s to make one full oscillation has a frequency of 1 oscillation per 0.5s or 2 oscillations / second.

How to calculate the oscillation frequency?

mass (m) = 0.29kg

Total energy (E) = 3.6j

amplitude (x) = 0.22m

E = 1/2 k*x^2

k = 2*E / x^2

= 2 * 3.6 / 0.22^2

= 148.76 N/m

Frequency (v) = 1/2π √k/m

= 1/2*3.14 * √148.76 / 0.22

= 4.141Hz

Therefore, the oscillation frequency is 4.141Hz.

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The pattern gets bigger as the light wave length gets longer. other maxima are further from the central one and are wider.

A wavelength is the distance between two identical locations (adjacent crests) in successive cycles in a waveform signals that is transmitted by a wire or in space. Typically, this length is expressed in feet (m), millimeters (cm), or millimeters (mm) in wireless systems (mm).

The distance that separates two wave crests is known as the wavelength, and it also applies to troughs. The number of vibrations that pass across a certain area in a second, or 60hz (Hz), is the unit of measurement for frequency (Hertz).

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The electric potential (V) can be found by integrating the electric field (E) with respect to the distance (x). In this case, E = -30x + 2.

Integration of E with respect to x gives:

V(x) = -15x^2 + 2x + C

Since the potential at the origin (x = 0) is taken as a reference point, we can set V(0) = 0:

0 = -15(0)^2 + 2(0) + C
C = 0

Now, we can find the electric potential at x = 2 meters:

V(2) = -15(2)^2 + 2(2)
V(2) = -15(4) + 4
V(2) = -60 + 4
V(2) = -56 V

So, the correct answer is option (b) -56 V.

The electric field in a region of space is given by the function E = -30x + 2, where x is in meters and E is in Volts/meter. What is the electric potential at x = 2m, relative to the origin?Answer:The electric potential at x = 2 m, relative to the origin is -56 V.Explanation:Given:E = -30x + 2, where x is in meters and E is in Volts/meter.So, E = -30(2) + 2= -60 + 2= -58 V/mElectric field is given by the negative gradient of the electric potential, soE = -∆V/∆xE = -dV/dx∆x is the displacement along the x-axisThe electric potential can be calculated by integrating E with respect to the displacement on the x-axis.x=2m, E=-30(2)+2 = -58 V/mWe can calculate electric potential by integrating E with respect to displacement along the x-axis.The electric potential difference between two points is defined as the work done per unit charge by an external force to move a test charge from one point to another.ϕb - ϕa = -∫E.dxPotential at point a is taken to be 0.So, ϕb = -∫E.dxϕb = -∫-58 dxϕb = 58x + CAt x = 0, ϕb = 0So, 0 = 58(0) + C = CAt x = 2 m, ϕb = 58(2) = 116 VSo, electric potential at x = 2 m, relative to the origin is 116 V.Now, we need to find electric potential at x = 2 m, relative to the origin.Substituting x = 2 m in the equation, we get,ϕb = 58xϕb = 58(2)ϕb = 116 VThus, the electric potential at x = 2 m, relative to the origin is -56 V. Therefore, the correct option is b.

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The electric potential at x=2m, the electric field in a region of space is given by the function E=−30x+2, is +56 V.

To find the electric potential at x=2 m, we need to integrate the electric field function from the origin (x=0) to x=2 m.

The formula for electric potential is:

V = -∫E(x)dx

where E(x) is the electric field function and dx is the distance element.

Plugging in the given electric field function, we get:

V = -∫(-30x+2)dx

Integrating, we get:

V = 15x^2 - 2x + C

where C is the constant of integration.

To find the value of C, we need to use the boundary condition that the electric potential at x=0 (the origin) is zero.

V(0) = 15(0)^2 - 2(0) + C = 0

C = 0

So the electric potential at x=2 m is:

V = 15(2)^2 - 2(2) = 56 V

Therefore, the answer is (a) +56 V.

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Answer:

geothermal energy is the answer

(a) The drum takes 2.807 seconds to come to a stop.

(b) The drum rotates through an angle of 48.75 radians before coming to rest.

(a) To find the time it takes for the drum to stop, we can use the formula:

angular acceleration = (change in angular velocity) / time

Rearranging, we get:

time = (change in angular velocity) / angular acceleration

Substituting the given values, we get:

time = 17.4 / 6.21 = 2.807 seconds

So the drum takes 2.807 seconds to come to a stop.

(b) To find the angle through which the drum rotates before coming to rest, we can use the formula:

final angular velocity^2 = initial angular velocity^2 + 2 * angular acceleration * angle

We know that the final angular velocity is zero, the initial angular velocity is 17.4 rad/s, and the angular acceleration is -6.21 rad/s^2 (negative because the drum is slowing down). Substituting these values, we get:

0^2 = 17.4^2 + 2 * (-6.21) * angle

Solving for the angle, we get:

angle = 48.75 radians

So the drum rotates through an angle of 48.75 radians before coming to rest.

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Soil is a material composed of five ingredients — minerals, soil organic matter, living organisms, gas, and water. Soil minerals are divided into three size classes — clay, silt, and sand (Figure 1); the percentages of particles in these size classes is called soil texture.Soil contains air, water, and minerals as well as plant and animal matter, both living and dead. These soil components fall into two categories. ... Other, less common minerals include calcium, magnesium, and sulfur. The biotic and abiotic factors in the soil are what make up the soil's composition.

With both eyes open, the blind spots are not perceived because the visual fields of the two eyes overlap. Indeed, even with one eye closed, the blind spot can be difficult to detect subjectively because of the ability of the brain to “fill in” or ignore the missing portion of the image.

The optically transparent aqueous humour, lens, and vitreous body are all enclosed by three coatings that make up the eye. The cornea and sclera make up the outermost coat, while the choroid, ciliary body, and iris make up the intermediate coat and, from the rear to the front, the major blood supply to the eye.

Due to the fact that both eyes' fields of vision overlap, the blind spot is ignored and does not result in a blind spot in the visual field. Additionally, even with one eye closed, the brain has the capacity to ignore or make up for the affected area.

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Answer:

It obeys Newton's third law of motion.

Explanation:

The experiment obeys Newton's third law of motion because when the air in the balloon is released, the air moves in the downward direction which is an action of the balloon so in the reaction, the balloon moves in upward direction   so both action and reaction forces are equal in magnitude but moves in opposite direction which obeys Newton's third law of motion.

Given:

The angle of incidence is,

The refractive index of the crown glass for red light is,

The refractive index of the crown glass for blue light is,

To find:

The angle separating rays of the two colours in a piece of crown glass

Explanation:

We know, Snell's law,

For, the red light,

For, the blue light,

The separation between the refracted rays is,

Hence, the required separation is 0.1 degrees.

The maximum number of 23 pieces a person could eat without exceeding 150 calories.

A calorie can be described as unit of energy. The large calorie, food calorie was originally described as the amount of heat required to raise the temperature of 1 Kg of water by one degree Celsius.

The small calorie was defined as the amount of heat required to cause the same increase in one gram of water.  In physics and chemistry, the calorie usually refers to a small unit of energy. One calorie is equal to exactly 4.184 Joules.

Given, the  234 calories contained in pieces of candy = 36

Then 150 calories contain by pieces of candy = (36/234) ×150 = 23

Therefore, a maximum number of 23 pieces someone could eat without exceeding 150 calories.

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The battery's internal resistance is 0.29 ohms when an automobile starter motor is connected to a 12.0 v battery that draws 170 A of current  and the battery voltage drops to 6.2 v.

Given the voltage of battery = 12V

The current the motor draws when started = 170A

The voltage drop = 6.2V

Let the internal resistance = R

The internal resistance of the battery can be calculated using Ohm's law, which states that V=IR, where V is voltage, I is current and R is resistance.

R = V/I

R = (12.0V - 6.2V) / 170A

R = 0.29 ohms

Therefore, the battery's internal resistance is 0.29 ohms.

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